Service manual | Friedrich SQ05N10 Air Conditioner User Manual

Service/Parts Manual
2012
Room Air Conditioners
AUTO
AUTO FAN
CONTINUOUS
88
F
C
AM
PM
SET POINT
ROOM TEMP
CHECK$
FILTER
AUTO SPEED
SYSTEM
ON OFF
SCHEDULE
MART
FAN MODE
POWER
FAN SPEED
SCHEDULE
Q Chassis Models
115-Volt: SQ05N10*, SQ06N10*, SQ08N10*, SQ10N10*
Cool Only
115-Volt: EQ08N11*
Cool and Electric Heat
KuhlQ_Serv/Parts Man (4-12)
* Last character may vary.
93001401_01
Table Of Contents
Important Safety Information .......................................................................................................................................... 2-4
Introduction ....................................................................................................................................................................... 4
8QLW,GHQWL¿FDWLRQ
Performance Data ............................................................................................................................................................. 6
&KDVVLV6SHFL¿FDWLRQV
Installation Information/Sleeve Dimensions ...................................................................................................................... 6
Electrical Data ................................................................................................................................................................... 7
Before Operating the Unit ................................................................................................................................................. 8
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.XKO4&RQWURO3DQHO2SHUDWLRQDQG6\PEROV,GHQWL¿FDWLRQ
Kuhl Q Control Options .................................................................................................................................................. 10
Control Panel Operation Instructions .......................................................................................................................... 11-17
5HPRWH&RQWURO2SHUDWLRQ
Electronic Control Sequence of Operation ................................................................................................................. 20-21
Components Testing .................................................................................................................................................. 22-25
Refrigeration Sequence of Operation ............................................................................................................................. 26
R-410A Sealed System Repair Considerations .............................................................................................................. 27
Sealed Refrigeration System Repairs ........................................................................................................................ 28-33
Compressor Checks ................................................................................................................................................... 34-35
Compressor Replacement .......................................................................................................................................... 36-37
Available Accessories ...................................................................................................................................................... 37
Standard Filter Cleaning/Installation Instructions ............................................................................................................ 38
5RXWLQH0DLQWHQDQFH
After Maintenance/Repair Start-Up Checklist and Notes ................................................................................................ 41
Performance Test Data Sheet ......................................................................................................................................... 42
How to Check the Diagnostic Codes ............................................................................................................................... 43
Erasing Diagnostic Codes ............................................................................................................................................... 43
Error Codes ..................................................................................................................................................................... 44
Compressor Test Mode ................................................................................................................................................... 45
Troubleshooting ......................................................................................................................................................... 46-52
Wiring Diagrams ........................................................................................................................................................ 53-54
Thermistor Resistance Values ....................................................................................................................................... 55
Instructions for using Cooling Load Estimate Form ........................................................................................................ 56
Cooling Load Estimate Form ........................................................................................................................................... 57
+HDW/RDG)RUP
Parts List .................................................................................................................................................................... 60-62
Addendum 1 .................................................................................................................................................................... 63
Warranty .......................................................................................................................................................................... 64
Parts Depots ................................................................................................................................................................... 65
Technical Assistance ....................................................................................................................................................... 65
1
IMPORTANT SAFETY INFORMATION
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with the safety procedures required for installation and repair, and who is equipped with the proper tools and
test instruments required to service this product.
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VXFKUHSDLUVDVZHOODVWKHSHUVRQVEHLQJVHUYHGE\WKHHTXLSPHQWWRKD]DUGVUHVXOWLQJLQLQMXU\RUHOHFWULFDO
shock which can be serious or even fatal.
Safety warnings have been placed throughout this manual to alert you to potential hazards that may be
encountered. If you install or perform service on equipment, it is your responsibility to read and obey these
ZDUQLQJVWRJXDUGDJDLQVWDQ\ERGLO\LQMXU\RUSURSHUW\GDPDJHZKLFKPD\UHVXOWWR\RXRURWKHUV
Your safety and the safety of others are very important.
We have provided many important safety messages in this manual and on your appliance. Always read
and obey all safety messages.
This is a Safety Alert symbol.
This symbol alerts you to potential hazards that can kill or hurt you and others.
All safety messages will follow the safety alert symbol with the word “WARNING”
or “CAUTION”. These words mean:
WARNING
<RXFDQEHNLOOHGRUVHULRXVO\LQMXUHGLI\RXGRQRWIROORZLQVWUXFWLRQV
CAUTION
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$OOVDIHW\PHVVDJHVZLOOWHOO\RXZKDWWKHSRWHQWLDOKD]DUGLVWHOO\RXKRZWRUHGXFHWKHFKDQFHRILQMXU\
and tell you what will happen if the instructions are not followed.
NOTICE
A message to alert you of potential property damage will have the
word “NOTICE”. Potential property damage can occur if instructions
are not followed.
PERSONAL INJURY OR DEATH HAZARDS
ELECTRICAL HAZARDS:
2
%
Unplug and/or disconnect all electrical power to the unit before performing inspections,
maintenance, or service.
%
Make sure to follow proper lockout/tag out procedures.
%
$OZD\VZRUNLQWKHFRPSDQ\RIDTXDOL¿HGDVVLVWDQWLISRVVLEOH
%
Capacitors, even when disconnected from the electrical power source, retain an electrical charge
potential capable of causing electric shock or electrocution.
%
Handle, discharge, and test capacitors according to safe, established, standards, and approved
procedures.
%
([WUHPHFDUHSURSHUMXGJPHQWDQGVDIHW\SURFHGXUHVPXVWEHH[HUFLVHGLILWEHFRPHVQHFHVVDU\
to test or troubleshoot equipment with the power on to the unit.
%
Do not spray or pour water on the return air grille, discharge air grille, evaporator coil, control panel,
and sleeve on the room side of the air conditioning unit while cleaning.
%
Electrical component malfunction caused by water could result in electric shock or other electrically
unsafe conditions when the power is restored and the unit is turned on, even after the exterior is dry.
%
Never operate the A/C unit with wet hands.
%
8VHDLUFRQGLWLRQHURQDVLQJOHGHGLFDWHGFLUFXLWZLWKLQWKHVSHFL¿HGDPSHUDJHUDWLQJ
%
Use on a properly grounded outlet only.
%
Do not remove ground prong of plug.
%
Do not cut or modify the power supply cord.
%
Do not use extension cords with the unit.
%
Follow all safety precautions and use proper and adequate protective safety aids such as: gloves,
goggles, clothing, adequately insulated tools, and testing equipment etc.
%
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REFRIGERATION SYSTEM HAZARDS:
%
Use approved standard refrigerant recovering procedures and equipment to relieve pressure before
opening system for repair.
%
Do not allow liquid refrigerant to contact skin. Direct contact with liquid refrigerant can result in minor
WRPRGHUDWHLQMXU\
%
%HH[WUHPHO\FDUHIXOZKHQXVLQJDQR[\DFHW\OHQHWRUFK'LUHFWFRQWDFWZLWKWKHWRUFK¶VÀDPHRUKRW
surfaces can cause serious burns.
%
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%
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%
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possible.
%
Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for
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%
Make sure to follow all safety precautions and to use proper protective safety aids such as: gloves,
safety glasses, clothing etc.
%
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MECHANICAL HAZARDS:
%
([WUHPHFDUHSURSHUMXGJPHQWDQGDOOVDIHW\SURFHGXUHVPXVWEHIROORZHGZKHQWHVWLQJ
troubleshooting, handling, or working around unit with moving and/or rotating parts.
%
Be careful when, handling and working around exposed edges and corners of sleeve, chassis, and
RWKHUXQLWFRPSRQHQWVHVSHFLDOO\WKHVKDUS¿QVRIWKHLQGRRUDQGRXWGRRUFRLOV
%
Use proper and adequate protective aids such as: gloves, clothing, safety glasses etc.
%
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3
PROPERTY DAMAGE HAZARDS
FIRE DAMAGE HAZARDS:
%
Read the Installation/Operation Manual for this air conditioning unit prior to operating.
%
8VHDLUFRQGLWLRQHURQDVLQJOHGHGLFDWHGFLUFXLWZLWKLQWKHVSHFL¿HGDPSHUDJHUDWLQJ
%
Connect to a properly grounded outlet only.
%
Do not remove ground prong of plug.
%
Do not cut or modify the power supply cord.
%
Do not use extension cords with the unit.
%
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WATER DAMAGE HAZARDS:
%
Improper installation maintenance, or servicing of the air conditioner unit, or not following the above
Safety Warnings can result in water damage to personal items or property.
%
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%
Do not drill holes in the bottom of the drain pan or the underside of the unit.
%
Failure to follow these instructions can result in result in damage to the unit and/or minor to serious
property damage.
INTRODUCTION
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with each unit.
This service manual was written to assist the professional HVAC service technician to quickly and accurately
diagnose and repair any malfunctions of this product.
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IMPORTANT: It will be necessary for you to accurately identify the unit you are
servicing, so you can be certain of a proper diagnosis and repair.
6HH8QLW,GHQWL¿FDWLRQ
Register your air conditioner
Model information can be found on the
name plate behind the front cover.
Please complete and mail the owner
registration card furnished with this
product, or register online at www.friedrich.
com. For your convenience, record the
model information here.
FRIEDRICH
AIR CONDITIONING CO.
SAN ANTONIO, TX
MODEL NUMBER
EQ08N11-A
SERIAL NUMBER
AALY00219
VOLTS 60 HZ/ 1PH
115
103 VOLT MIN.
COOLING:
BTU/HR
7500
EER
9.8
AMPS
6.9
HEATING:
BTU/HR
4000
EER
AMPS
11.2
MAX AMPS:
23.5 OZS.
MODEL NUMBER
DESIGN PRESSURES
600 PSIG HS
300 PSIG LS
U.S. PATENTS
D458, 229 S
5,634,346
IF CONNECTED TO
A FUSE PROTECTED
CIRCUIT, USE A 12 A
TIME DELAY FUSE
LISTED 183H
ROOM AIR
CONDITIONER
FRIEDRICH
AIR CONDITIONING CO.
SAN ANTONIO, TX
Assembled in Mexico
MODEL NUMBER
EQ08N11-A
SERIAL NUMBER
AALY00219
VOLTS 60 HZ/ 1PH
4
SERIAL NUMBER
PURCHASE DATE
UNIT IDENTIFICATION
KuhlQ Model Number Code
S Q 08 N 1 0 A - A
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,QGLFDWHV0RGL¿FDWLRQ
6XEMHFWWRFKDQJH
1st Digit – Function
E = Electric Heat
S = Straight Cool
WK'LJLW±0DUNHWLQJ6XI¿[
,QGLFDWHV0RGL¿FDWLRQ
6XEMHFWWRFKDQJH
7th Digit – Options
0 = Straight Cool
1 = 1 KW Heat Strip, Nominal
2nd Digit
Q = Chassis Size
6th Digit – Voltage
1 = 115 Volts
5th Digit - Model Series / Year Introduced
N=2012
3rd and 4th Digit - Approximate
%78+5LQV&RROLQJ
Heating BTU/Hr capacity listed in the
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Serial Number
Decade Manufactured
/ & ) - A=1
D=4
G=7
B=2
E=5
H=8
Year Manufactured
A=1
D=4
G=7
B=2
E=5
H=8
& ) - K=0
A
B
A
Y
00001
Production Run Number
Product Line
Kuhl Q
Month Manufactured
A=Jan D=Apr G=Jul K=Oct
B=Feb E=May H=Aug L=Nov
C=Mar F=Jun J=Sept M=Dec
5
PERFORMANCE DATA
EVAP. AIR TEMP. DEG. F
Q-Chassis
COOLING
PERFORMANCE DATA**
Discharge Air
Temp.
Drop F.
*
OPERATING PRESSURES
CONDENSER
Discharge Temp Suction Temp Super Heat Sub-Cooling
TEMPERATURE DEG. F
Suction
Discharge
R-410A
REF.
ELECTRICAL RATINGS
Amps Cool Amps Heat
Locked Rotor
Amps
BREAKER FUSE
Voltage
Charge in
OZ.
60 Hertz Amps
SQ05N10-A
57
23
115
146
63
10
13
158
387
9
29.0
17.0
115
15
SQ06N10-A
57
23
115
146
63
10
13
150
387
4.9
29.0
17.0
115
15
SQ08N10-A
58
23
118
158
63
12
20
147
415
6.6
32.0
22.0
115
15
SQ10N10-A
53
22
122
164
58
11
23
136
428
9.2
50.0
23.5
115
15
EQ08N11-A
53
27
117
159
61
20
19
146
411
6.7
32.0
18.5
115
15
11.2
*
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5DWLQJ&RQGLWLRQVGHJUHHV)URRPDLUWHPSUHODWLYHKXPLGLW\ZLWKGHJUHH)RXWVLGHDLUWHPSUHODWLYHKXPLGLW\DOOV\VWHPVXVH5$
Energy
Cooling
Capacity Btu
Model
Kühl
Heating
Capacity Btu
Volts
Rated
Cooling
Amps
Cooling
Watts
Heating
Amps
Heating
Watts
Ratio
EER
COP
Estimated
Yearly
Moisture
Operating Removal
Cost
Pints/HR
Room Side
Air
Circulation
CFM
Net
Weight Ship
Sleeve Lbs
Wt
®
SQ05N10
5500
—
115
4.5
514
—
—
10.7
$41
0,5
190
Q
65
78
SQ06N10
5900
—
115
4.9
561
—
—
18.7
$45
0.5
190
Q
71
84
7500
—
115
6.1
700
—
—
10.7
$56
1.2
240
Q
71
84
9500
—
115
8.4
969
—
—
9.8
$77
2.1
240
Q
75
88
4000
115
6.9
765
11.2
1290
11.7
$61
1.9
175
Q
72
84
*
*
SQ08N10
*
SQ10N10
*
Kühl+ ® Electric Heat
EQ08N11
*
7500
1.9
As an ENERGY STAR® partner, Friedrich Air Conditioning Co. has determined that the selected ENERGY STAR ® models
meet the ENERGY STAR®
Estimated yearly operating cost based on a 2007 national average electricity cost of 10.65 cents per kWh.
C
US
Installation Information / Sleeve Dimensions
Sleeve
Height
Q
14"
Width
19
"
Depth Shell Depth to Minimum
with Front
Louvers
Extension
Into Room*
21 3 8"
8
"
5
Minimum
Extension
Outside*
"
10
Thru-the-wall Installation
Finished Hole
Window Width
Minimum** Maximum
"
22"
Height
42"
14
"
Width
20"
Max. Depth
8
”
* Minimum extensions when mounted in a window.
** Minimum widths achieved using one side curtain assembly as opposed to both in a standard installation.
Circuit Rating / Breaker
(C)
Circuit Rating
Breaker or
T-D Fuse
Model
Plug
Face
(NEMA#)
SQ05N10 , SQ06N10 ,
SQ08N10 , SQ10N10
EQ08N11
*
*
*
Power Cord
Length (ft.)
Wall Outlet
Appearance
7
*
*
125V - 15A
5 - 15P
6
Front
(B)
Window Mounting Kits
Heat/Cool Models
Kit No.
EQ08 N11
WIKQ
*
Friedrich heat/cool models include accessories for
thru-the-wall installation only. Window mounting requires
use of optional accessory kit as listed above.
6
SIDE VIEW
ELECTRICAL DATA
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before service or
installation.
All electrical connections and wiring MUST be
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the National Electrical Code and all local codes
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death.
NOTICE
FIRE HAZARD
1RWIROORZLQJWKHDERYH:$51,1*FRXOGUHVXOWLQ¿UHRU
electically unsafe conditions which could cause moderate
or serious property damage.
Read, understand and follow the above warning.
Wire Size
Use ONLY wiring size recommended for single outlet branch circuit.
Fuse/Circuit Breaker
Use ONLY the correct HACR type and size fuse/circuit breaker. Read electrical ratings on unit’s
rating plate. Proper circuit protection is the responsibiity of the homeowner.
Grounding
Unit MUST be grounded from branch circuit through service cord to unit, or through separate
ground wire provided on permanently connected units. Be sure that branch circuit or general
purpose outlet is grounded.
5HFHSWDFOH
7KH¿HOGVXSSOLHGRXWOHWPXVWPDWFKSOXJRQVHUYLFHFRUGDQGEHZLWKLQUHDFKRIVHUYLFHFRUG
Do NOT alter the service cord or plug. Do NOT use an extension cord. Refer to the table above
for proper receptacle and fuse type.
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EHFHUWDLQWKDWWKH$+$0&HUWL¿FDWLRQ6HDODFFXUDWHO\VWDWHVWKHXQLW¶VFRROLQJDQG
KHDWLQJFDSDFLW\UDWLQJWKHDPSHUHVDQGWKHHQHUJ\HI¿FLHQF\UDWLR
C
US
*HACR: Heating Air Conditioning and Refrigeration
7
WARNING: Before Operating Your Unit
WARNING
Make sure the wiring is adequate for your unit.
Electrical Shock Hazard
If you have fuses, they should be of the time delay type. Before you install
or relocate this unit, be sure that the amperage rating of the circuit breaker
or time delay fuse does not exceed the amp rating listed in Table 1.
Make sure your electrical receptacle has the
same configuration as your air conditioner’s
plug. If different, consult a Licensed Electrician.
DO NOT use an extension cord.
Do not use plug adapters.
Do not use an extension cord.
Do not remove ground prong.
The cord provided will carry the proper amount of electrical power to the
unit; an extension cord may not.
Always plug into a grounded 3 prong oulet.
Failure to follow these instructions can result in
death, fire, or electrical shock.
Make sure that the receptacle is compatible with the air
conditioner cord plug provided.
This insures proper grounding. If you have a two prong receptacle you
will need to have it replaced with a grounded receptacle by a certi¿ed
electrician. The grounded receptacle should meet all national and local
codes and ordinances. Under no circumstances should you remove the
ground prong from the plug. You must use the three prong plug furnished
with the air conditioner.
Test the power cord
All Friedrich room air conditioners are shipped from the factory with a
Leakage Current Detection Interrupter (LCDI) equipped power cord. The
LCDI device meets the UL and NEC requirements for cord connected air
conditioners effective August 2004.
MODEL
SQ05 ‡ SQ06
SQ08 ‡ SQ10
EQ08
CIRCUIT RATING
OR TIME DELAY
FUSE
REQUIRED WALL
RECEPTACLE
AMP
VOLT
NEMA NO.
15
125
5-15P
Table 1.
Figure 1
To test your power supply cord:
1.
Plug power supply cord into a grounded 3 prong outlet.
2.
Press RESET (See Figure 1).
3.
Press TEST, listen for click; the RESET button trips and pops out.
4.
Press and release RESET (Listen for click; RESET button latches
and remains in). The power cord is ready for use.
RESET
TEST
WARNING:
TEST BEFORE EACH USE!
1. PRESS REST BUTTON.
2. PLUG LCDI INTO POWER
RECEPTACLE.
3. PRESS TEST BUTTON,
RESET BUTTON SHOULD
POP UP.
4. PRESS RESET BUTTON
FOR USE.
DO NOT USE IF ABOVE TEST
FAILS.
WHEN GREEN LIGHT IS ON.
IT IS WORKING
PROPERLY!
Note: The LCDI device is not intended to be used as an ON/OFF switch.
Once plugged in, the unit will operate normally without the need to reset
the LCDI device.
If the LCDI device fails to trip when tested or if the power supply cord is
damaged, it must be replaced with a new power supply cord from the
manufacturer. Contact our Technical Assistance Line at (800) 541- 6645.
To expedite service, please have your model number available.
For the best cooling performance and highest energy efficiency
Keep the filter clean
Make sure that your air conditioner is always in top performing condition by
cleaning the filter regularly.
Provide good air flow
Make sure the airflow to and from the unit is clear. Your air conditioner puts the
conditioned air out at the top of the unit, and takes in unconditioned air at the
bottom. Airflow is critical to good operation. It is just as important on the outside
of the building that the airflow around the unit exterior is not blocked.
Unit placement
If your air conditioner can be placed in a window or wall that is shaded by a tree
or another building, the unit will operate even more efficiently. Using drapes or
blinds on the sunny side of the dwelling will also add to your unit’s efficiency.
8
Insulation
Good insulation will be a big help in maintaining desirable comfort levels.
Doors should have weather stripping. Be sure to caulk around doors and
windows.
Proper installation of chassis seal gasket
Make sure the seal gasket has been installed properly to minimize noise and
improve efficiency. If the chassis seal gasket has not been installed, please
refer to Step 14 of the installation instructions.
Kuhl Q Control Panel Operation
Let’s check out how to control your air conditioner. On the control panel, just above the POWER , is a liquid crystal display (LCD). All of the control panel function
buttons and mode icons can be viewed in Figure 6.
Power On – Press the button to turn on the air conditioner. The power button illuminates to indicate that the power is on. The backlight on the power switch
will automatically dim to 20% intensity after 15 seconds of inactivity. The remote control can also be used to turn power ON / OFF (See Remote Control).
Display – The display is a high ef¿ciency LCD with a built-in white backlight. The backlight has an automatic two (2) step dim function. After 15 seconds of
inactivity, the display dims to 20% intensity. After an additional 120 seconds, the display switches off. Touching any button automatically changes the display
to full brightness.
There are three control push buttons on each side of the display.
Figure 2
COOL
HEAT
FAN
ONLY
SYSTEM:
Cycles between
HEAT, COOL or
FAN ONLY
FAN MODE:
Sets fan to either:
- Cycle automatically
- Run continuously
CONTROL
LOCKED
WI-FI
OPERATING (if equipped)
TEMPERATURE:
Increment UP
AUTO FAN
CONTINUOUS
88
SET POINT
ROOM TEMP
AUTO SPEED
CHECK
FILTER
WAIT
COMPRESSOR
3 MINUTES
TIME DELAY
F
C
AM
PM
TEMPERATURE:
Increment DOWN
ON OFF
SCHEDULE
SCHEDULE ON
$MART
TIMER / SCHEDULE
Turns ON or OFF
FAN SPEED:
Sets fan speed:
LOW, MED, HIGH
or AUTO
(as equipped)
TIMER ON
IR WINDOW:
Do not block
ON / OFF:
Turns unit on/off
FILTER
Check / Clean
AUTO SPEED
Automatically selects
best fan cooling or heating speed
FAN SPEED
Selected fan speed
2 DIGIT DISPLAY
Shows Setting for:
- Set Point (Temperature)
- Room Temperature
- Clock (AM/PM)
SMART OPERATING
(see page 10)
8
Kühl Control Options
The Kühl gives you a variety of options for control, programming, and
scheduling including wireless capabilities
Wireless Programming and Control:
The new FriedrichLink™ Adapter (sold seperately) allows you to conviently
control, program and monitor your air conditioning unit remotely from a
smartphone or computer.
FriedrichLink™ Adapter accessory available through Friedrich authorized
retailers or www.friedrich.com. See FriedrichLink™ Adapter section on
www.friedrich.com for complete details.
The “Residential” (40 Hr. Work Week) Schedule has four (4) time periods: 06:00,
08:00, 18:00, and 22:00. This option will cause your Kühl Q unit to raise the room
temperature temporarily to 85°F during the hours when most people are away
at work, lower them again to 78°F prior to the time when most people will return
home, and then raise slightly to 82°F to maintain a comfortable temperature
overnight.
The “Commercial” (5-Day Business Week) Schedule has two (2) time periods:
07:00 and 18:00. This option will cause your air conditioner to raise temperatures
to 84°F after typical working hours and on weekends when commercial spaces
are typically unoccupied.
(See Control Panel Operation Instructions Section)
Pre-Programmed Scheduling Options:
Your unit’s digital control comes equipped with a 24-hour timer and two preprogrammed 7-day energy management options.
24-Hour Timer
The 24-hour timer allows you to turn the unit off and on at pre-set times by
setting an on and off time on the unit control panel. (See page 11 for details on
timer set-up.)
Pre-programmed Energy Management
Customizable Programming Options:
Customizable schedules, with up to four temperature adjustments per day, can
either be uploaded to the unit via the air conditioner’s built-in micro USB interface
or conveniently transmitted wirelessly using the new FriedrichLink™ Adapter
accessory, greatly simplifying the programming of one or multiple units.
See Figure 7.
See www.friedrich.com for complete Customizable
Programming instructions.
Your unit comes from the factory with two (2) Pre-programmed Energy
Management settings are shown in Addendum 1 (Residential & Commercial
Schedule Table).
Smart Grid
Energy Management Schedule Options are:
The Kuhl Unit is also able to be controlled by a Smart Grid.
1.
Residential Schedule – 40 Hr. Work Week
2.
Commercial Schedule – 5-Day Business Week
Smart Grid is a network that brings electricity from power stations to
consumers using new technologies that allow power companies to adjust
electrical loads of residential users. Check with your local electric company
to learn more about Smart Grid programs in your area.
Figure 3
FRR203
10
Control Panel Operation Instructions
FAN MODE – The
button allows you to select between
CONTINUOUS modes. To select, press once and let go.
FAN
MODE
AUTO FAN
and
SYSTEM - The
button allows you to sequentially select three modes
of operation. To select, press once and let go.
SYSTEM
COOL MODE
HEAT MODE
Not available on some models
F
FAN ONLY MODE
AUTO FAN
COOL MODE
SET POINT
FRR112
When in the AUTO FAN mode, the fan operates only when the system has
a demand to cool or heat the room. Note: the fan is off (no fan speed icon),
indicating no command for cooling or heating.
AUTO FAN (Cooling Demand)
FRR103
HEAT MODE
F
AUTO FAN
SET POINT
FRR106
System has a demand for cooling. The fan is operating at a medium speed.
CONTINUOUS
FRR104
FAN ONLY MODE
F
CONTINUOUS
SET POINT
FRR113
FRR105
In the CONTINUOUS fan mode, the fan operates all the time. The system
periodically cools or heats the fan's airÀow but the Àow of air does not stop.
When in the SYSTEM COOL or HEAT or FAN ONLY mode, you
can also select FAN MODE, FAN SPEED, TIMER SCHEDULE,
and
. The SYSTEM MODE does not change.
3 Speed
FAN SPEED - The
FAN
SPEED
button allows you to toggle between four modes of operation: LOW, MEDIUM, HIGH and AUTO. Press once and let go each time.
AUTO
FRR095
During the (SYSTEM mode COOL or HEAT), the fan speed automatically varies depending on the difference between the unit's set point on the control
panel and the actual room temperature. Let me explain. Say for example, you’re working in your garage and you open the big door for several minutes. The
system will sense a wide difference between the set point and the actual room temperature. When this occurs, the system fan speed increases to HIGH for
a period of time. The fan speed decreases, in step, as the temperature difference decreases. When the room temperature matches the system's set point,
fan speed returns to the lowest setting, and if the fan mode is on AUTO FAN, the fan will stop.
11
UP and DOWN
- arrows - Pressing either
or button changes
the system's set point (desired room temperature). These buttons are also
used for setting the Timer and other programming.
ºF - ºC Select
F
AUTO FAN
F
AUTO FAN
SET POINT
SET POINT
FRR132
FRR100
To switch from degrees Fahrenheit (F) to Celsius (C), press
buttons simultaneously for three seconds.
and
F
AUTO FAN
SET POINT
FRR101
One press equals 1 degree of change. Holding the button down for more
than 0.6 seconds starts the fast increment/decrement change of the set
point.
FRR133
An “F” will flash for 5 seconds and then revert to a normal display. To change
from F to C, press the
or
button within 5 seconds.
TIMER SCHEDULE BUTTON The
TIMER
SCHEDULE
button has two main uses:
1.Used to preselect a TIMER
or SCHEDULE
pre-selection instructions, please see page 14.)
function. (For
2. Used to turn on or activate the pre-selected TIMER
SCHEDULE
.
or
3. To turn on your pre-selction, press the SCHEDULE button once and let
go. The display at bottom right will show the TIMER icon
or
SCHEDULE icon
.
TIMER
Example:
TIMER is turned ON
FRR134
A “C” will Àash for 5 seconds and then revert to a normal display.
SCHEDULE is turned ON
C
AUTO FAN
TIMER (FACTORY DEFAULT) - The TIMER is the default on new
units. The TIMER function allows you to turn the unit one time ON
and one time OFF daily at the times that you select. For example, you
can command the system to turn ON at 8:15 am and to turn OFF at
1:30 pm everyday. (To set the timer, see pages 15 -16.)
SCHEDULE- The SCHEDULE
has two options with factory
pre-programmed energy management settings: temperature, system
and time settings (see addendum) (for more information, see page 14).
Schedule options are:
1. Residential Schedule - 40 hour work week
2. Commercial Schedule - 5 day business week
(These factory pre-programmed settings can only be
changed by using the WiFi FriedrichLink™ adaptor, with
which you can create your own custum program. See page
10.)
12
SET POINT
FRR135
The ºF icon goes away and the ºC icon illuminates on the normal display.
DIM Function
Wait Icon
There are three separate display brightness levels, AUTO, 20% and full
(100%). To change the DIM setting, press the Power button for three
seconds.
F
AUTO FAN
SET POINT
FRR120
The wait icon
FRR192
The 1 indicates a DIM setting of Auto (factory default on new units). Use
the
or
buttons to change the setting.
illuminates when the compressor lockout is active.
Control Panel Lock
TIMER
To lock the front panel controls, press and hold the SPEED + SCHEDULE
buttons
for 3 seconds. The lock icon
illuminates to indicate the locked status.
During lockout, none of the control panel buttons will operate.
FAN
F
AUTO FAN
SET POINT
FRR193
The 2 indicates a DIM setting of 20%. Press the TIMER SET button within
15 seconds to save the setting. Button inactivity for more than 15 seconds
causes the display to time out and return to the normal operating display.
FRR116
To unlock, press and hold the
seconds.
FAN
SPEED
+
TIMER
SCHEDULE
buttons simultaneously for 3
External Control Status
The $MART icon illuminates to indicate that the system is being controlled
remotely, such as from a smart grid from a power company (for more
information, see page 12).
SMART
F
FRR194
AUTO FAN
The 3 indicates a DIM setting of 100% (full brightness). Press the TIMER
SET (Refer to Figure 8) button within 15 seconds to save the setting.
Button inactivity for more than 15 seconds causes the display to time out
and return to the normal operating display.
SET POINT
$MART
Alerts
When the ¿lter needs to be cleaned or replaced, the
CHECK
FILTER
icon displays.
FRR125
WiFi Connection
F
F
AUTO FAN
AUTO FAN
SET POINT
SET POINT
CHECK
FILTER
FRR118
The alert can be dismissed by pressing the
FAN
MODE
and
TIMER
SCHEDULE
for 3 seconds.
FRR126
The
icon illuminates to indicate that the system is receiving a Wi-Fi
connection (for more information, see page 10).
13
TIMER OR SCHEDULE OPTIONS 1 OR 2 SELECTION
The control system has one Timer and two Schedule functions:
A.
B.
Timer (factory default) - Allows you to command the unit to turn
ON and OFF at a time you program. Setting the start, stop and day
can be found latter in this manual on page 15.
F
AUTO FAN
Residential Schedule - When selection #1 is selected, the unit
follows a pre-programmed set of operational parameters that
covers 7 days of the week with 4 time windows during each day.
Each time window has it's own set of 8 operating parameters.
Refer to Addendum 1.
C. Commercial Schedule - When selection #2 is selected, the unit
follows a pre-programmed set of operational parameters that
covers 7 days of the week with 2 time windows during each day.
Each time window has it's own set of 8 operating parameters.
Refer to Addendum 1.
To change the TIMER/SCHEDULE selection, press and hold the
button for 3 sec, then let go.
TIMER
SCHEDULE
SET POINT
FRR136
The display reverts to the normal display.
NOTE: The schedule options 1 and 2 have factory pre-programmed
settings which can only be changed by using the WiFi FriedrichLink™
adaptor (an accessory). With it, you can create your own custom
schedule program. See page 10 for more information.
NOTE: Once you have selected the TIMER
following before turning it on.
you must first set the
1. Set time and day
2. Set start time
3. Set stop time
See timer settings on next page.
To Turn On the Timer or Schedule Selected
FRR139
The display shows the TIMER is selected. Press the
let go.
button once and
FRR139
SCHEDULE
Press the SCHEDULE button and let go. The system will operate in the mode
mode option (1, 2 or Timer) you selected. At the above image, TIMER is
selected and turned on.
TIMER
FRR137
The display shows option 1 (Residential Schedule) is selected. Press
the
button once and let go.
SCHEDULE
FRR138
The display shows option 2 (Commercial Schedule) is selected.
To save and exit selection, press the TIMER SET button (Figure 4, Page
15).
14
TIMER SETTINGS
1. Set time and day
2. Set start time
3. Set stop time
Figure 4
F
AUTO FAN
SET POINT
FRR131
FRIEDRICH
TIMER HOUR
SET
Press TIMER SET (Refer to Figure 4) button to exit and save the SET
TIME function. The TIMER SET button must be pressed within 15 second.
Button inactivity for more than 15 seconds causes the display to time out
and return to the normal operating display.
MIN
Timer Start Time
AIR CONDITIONING CO.
SAN ANTONIO, TX
FRR097
SET TIME AND DAY - To adjust the unit's time press and hold the HOUR
and the MIN buttons for three seconds (Refer to Figure 4).
F
AUTO FAN
SET POINT
AM
FRR140
The display shows a normal system. Press and hold the HOUR button
(Figure 4) for 3 seconds. Note: The Timer start-stop times may be set even
when the system is in the Timer or Schedule mode.
FRR128
The unit's current hour displays. Use the
or
buttons to adjust the
hour. To change from AM to PM continue to increment (roll) the display.
Press TIMER SET (Refer to Figure 4) button to save the hour and display
the unit’s current minutes.
AM
ON
FRR141
Use the
or
button to adjust the hour. Press the TIMER SET button
(Figure 4) to adjust the minutes.
FRR129
Use the
or
buttons to adjust the minutes. The clock is now set
for 11:25 AM. Press TIMER SET (Refer to Figure 4) button to display the
unit's day setting.
ON
FRR142
Use the
or
button to adjust the minutes. Press the TIMER SET
button (Figure 4) within 15 seconds to exit and save the setting. The timer
is now set to start at 4:21 AM.
The display will return to normal.
FRR130
Use the
or
buttons to adjust the day (1 to 7). The day setting is up
to the user. If you set the current day = 1. So if today is Tuesday, then
Day 1 = Tuesday, select 1.
15
Set theTimer Stop Time
Timer ON Scenarios
Scenario 1
F
AUTO FAN
F
AUTO FAN
SET POINT
SET POINT
FRR144
The display shows a normal system. Press and hold the MIN button (Figure
4) for 3 seconds. Note the Timer start - stop times may be set even when
the system is in the Schedule mode.
FRR156
The display shows a normal operating system.
AM
OFF
FRR145
Use the
or
button to adjust the hour. Press the TIMER SET button
(Figure 4) to advance to the Minutes section.
FRR157
If the Timer function is turned ON during the Timer’s OFF time, the
illuminates. The control system immediately turns the unit OFF.
icon
Scenario 2
F
OFF
AUTO FAN
SET POINT
FRR146
Use the
or
button to adjust the minutes. Press the TIMER SET
button (Figure 4) within 15 seconds to exit and save the setting. The timer
is now set to stop at 11:55 AM. The display returns to normal.
FRR158
The display shows a normal operating system.
Turning the TIMER ON once the time and day, the start and top times
have been set:
Press the
TIMER
SCHEDULE
button once and let go.
NOTE: See the following TIMER
ON/OFF scenarios.
F
AUTO FAN
SET POINT
FRR159
If the Timer function is turned ON during the Timer’s ON time, the
illuminates. The control system immediately turns the unit OFF.
16
icon
Timer OFF Scenarios
Scenario 1
Timer - Schedule Control Block
F
AUTO FAN
SET POINT
SCHEDULE
FRR166
The display shows the unit in Timer mode during an in-active (OFF) period.
FRR148
If the unit is operating in the TIMER or SCHEDULE mode, and you press
TIMER
any bytton except the SCHEDULE
button, the TIMER
icon begins to
blink. All button action is blocked.
F
AUTO FAN
F
AUTO FAN
SET POINT
SET POINT
SCHEDULE
FRR167
If the Timer function is turned OFF during an in-active (OFF) period, the
Timer icon turns off. The display shows a normal system.
FRR149
The TIMER
icon stops blinking after 3 seconds. You must turn the
active TIMER or SCHEDULE mode OFF before making changes. Once
TIMER
the changes are made, press the SCHEDULE
button to re-activate TIMER
or SCHEDULE mode.
Scenario 2
If the unit is operating in the TIMER or SCHEDULE mode, and then you
TIMER
press any button except the SCHEDULE
button, the TIMER
icon begins
to blink.
F
AUTO FAN
SET POINT
F
FRR168
AUTO FAN
The display shows the unit in Timer mode during an active (ON) period.
SET POINT
FRR150
F
All button action is blocked.
AUTO FAN
SET POINT
FRR169
If the Timer function is turned OFF during the ON time. The Timer
turns off. The control stays in the current state.
icon
The display shows a normal system.
17
Remote Control Operation
FAN SPEED Button - Used to sequentially select new fan speed, plus
FAN
AUTO operation. When the SPEED
button is pressed, the fan speed icon
(triangle) changes to indicate the new speed level. Fan speed automatically
varies depending on the set temperature on the control panel and the actual
room temperature. For example if there is a big difference between your
set temperature and the actual room temperature, the system fan speed
increases to HIGH. It remains at this speed until the room temperature
matches the set temperature.
TIMER
TIMER/SCHEDULE Button – The SCHEDULE
button turns the schedule function
on and off. Press the SCHEDULE button once to turn on the Schedule
(Residential, Commercial, Timer or Customized. that has already been
pre-programmed into your unit. Pressing the SCHEDULE button a second time
turns the schedule function off.
Remote Control - Refer to Figures 10 and 11 during operation description.
Getting Started - Install two (2) AAA batteries in the battery compartment
located on the back of the unit.
Operation - The remote control should be within 25 feet of the air
conditioner for operation. (Refer to Figure 9 for effectiveness). Press the
power button to turn the remote on. The remote will automatically power
off after 15 seconds if the buttons are not being pressed. The remote must
be on to control the unit.
POWER Button - Turns remote and unit on and off.
SYSTEM Button - Allows the user to sequentially select, Cool
,
HEAT , and FAN ONLY
operation. When the button is pressed, the
display indicates which mode has been selected via a display message.
Note that when the heating function is not available, the system will
automatically skip the HEAT mode.
UP and DOWN Arrows - Pressing either the
(UP) or
(DOWN)
button changes the desired room temperature. The factory preset lower
and upper limits are 60°F (16°C) and 99°F (37°C). These buttons are also
used to navigate between function options when using the User Menu or
Maintenance Mode.
FAN MODE Button - Selects between automatic ( AUTO FAN ) or CONTINUOUS
operation. In the AUTO FAN mode, the fan only turns on and off when the
compressor operates or the heat function is active.
NOTE:
Remote Effectiveness
Hand Held Remote - Has an operating range of up to 25 ft. The infrared
remote control signal must have a clear path to transmit the command to
the air conditioning unit. The remote signal has some ability to "bounce"
off of walls and furniture similar to a television remote control. The diagram
below shows the typical operating range of the control in a standard room
with 8 ft high ceilings.
is not available in the FAN ONLY Mode, the display
indicates CONTINUOUS . In the CONTINUOUS mode, fan speed is
FAN
determined by your selection on the SPEED
button.
AUTO FAN
Figure 9
TOP VIEW
25ft
25ft
7.5ft
SIDE VIEW
4ft
45°
60°
60°
6ft
30°
60°
8ft
45°
45°
25ft
60°
30°
45°
30°
30°
16ft
8ft
25ft
25ft
25ft
18
25ft
25ft
FRR080
Figure 10
AUTO FAN
CONTINUOUS
AUTO
88
DISPLAY
C F
SYSTEM
FAN MODE
SYSTEM
FAN MODE
POWER
TEMPERATURE
UP
POWER
FAN SPEED
TEMPERATURE
DOWN
SCHEDULE
SCHEDULE
FAN SPEED
FRR081
Figure 11
COOL
ICON
SYSTEM
MODE
FAN
MODE
FAN
SPEED
AUTO FAN
CONTINUOUS
AUTO
HEAT
ICON
FAN ONLY
ICON
88
C F
°F / °C
ICONs
SCHEDULE
ICON
FRR082
ELECTRONIC CONTROL SEQUENCE OF OPERATION
Cooling Mode
prior to the compressor. Once the ambient temperature has been lowered to .25 ÛF below the set point, the cooling
cycle starts to terminate by shutting off the compressor. After a 30 seconds delay, the fan is shut off.
(See figure below for graphic details)
Electric Heat Operation in Cool with Electric Heat Units
When in the Heat mode, with and without Fan Mode Auto (Fan cycling):
If the indoor ambient temperature is below the Heat Demand Threshold (Heat Set Point minus 1.5 ÛF), turn on electric heat.
If Ambient is 0.3 ÛF above the Heat Set Point turn off the electric heat.
20
ELECTRONIC CONTROL SEQUENCE OF OPERATION (CONT.)
Compressor Lock Out Time
The lockout feature ensures that the compressor is de-energized for a period of time. The timer varies randomly
from 180 to 240 seconds
The compressor lockout is initiated every time the compressor is “off” due to:
(1) Satisfying the temperature set point
(2) Changing mode to fan only or heat
(3) Turning the unit off
(5) Line power is restored from a brown out condition
Wait ICON (Hour Glass
)
The wait icon will be turned on when the compressor is locked out and during demand for cooling or heat pump
compressor operation. The Wait ICON will be turned off when the condition clears.
Cooling Fan Delay
Fan cycle/Auto mode only
When unit cycles cooling ON – starts the fan 5 seconds EARLY. When unit cycles cooling OFF – DELAYS the fan
off for 30 seconds
Note: this fan delay is disabled during Test Mode
Heating Fan Delay
This is only for fan Mode Auto (Fan cycles with cool/heat operation) and not for continuous fan mode. When unit
cycles Heating ON – starts the fan 5 seconds EARLY. When unit cycles Heating OFF – DELAYS the fan off for 15
seconds
Note: the fan delay is disabled during Test Mode
Fan Speed Change Delay
Relay activation is delayed by a minimum number of seconds. The default for this value is 2 seconds and is used to
eliminate relay chatter.
Fan Only System Mode
Only the Fan is turned on. Cool or Heat operation are off.
(This is different than FAN MODE CONTINUOUS where the fan is on with the cool or heat operation).
Fan Only Rules
1. If the SYSTEM FAN ONLY MODE is selected, the Auto fan mode is disabled, and the fan mode is forced to
continuous. In addition, the auto fan speed is disabled. If the user presses the fan speed key, the menu will skip over
the auto selection. The set point temperature display is off.
2. Any fan speed may be manually selected during Fan Only Mode.
21
COMPONENTS TESTING
Testing the User Interface and Relay Board
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before inspections,
maintenances, or service.
Failure to do so could result in serious injury
or death.
If the user interface does not turn on:
1. Unplug unit, remove the User Interface.
2. Replug power cord and make sure the unit has the proper voltage and that is is turned on.
3. Reconnect the user interface’s wire harness. (Ensure it is in good condition.)
4. Using a voltmeter, check for 5VDC at plug - see Image #2 and #3.
5. For room temperature thermistor’s voltage test, see Image #2.
User Interface Tests
Relay Board Test
Front
Front
Room Temperature Thermistor
Voltage Test
Ensure there is 5 VDC at User
Interface (see Image 3).
Image 1
Image 4
Back
Check here for 3.3VDC. If no
voltage or wrong voltage, replace
the User Interface.
+-
User Interface Voltage Test
Check here for 5VDC. If no
voltage or wrong voltage,
replace relay board. If voltage
is OK, replace User Interface.
Image 3
22
Image 5
-
+
Not used.
+
Image 2
Test for 5VDC. If no
voltage or wrong voltage,
replace relay board.
COMPONENTS TESTING (CON’T)
Testing the Relay Board
L1
Fuse
T 3.15AH 250 Volts AC
Heat Relay
For Heat & Cool Units
Goes Here
LN
Fan
High Speed
Fan
Med Speed
Fan
Low Speed
+-
Indoor Coil
Thermistor
Outdoor Coil
Thermistor
Test for 3.3VDC. If incorrect or
no voltage, replace electronic
relay board. If voltage OK,
check thermistor’s resistance
value (See page 56).
Test here for 5VDC. If no
voltage or wrong voltage,
replace relay board.
23
COMPONENTS TESTING (Continued)
FAN MOTOR
A single phase permanent split capacitor motor is used to drive
the evaporator blower and condenser fan. A self-resetting
overload is located inside the motor to protect against high
temperature and high amperage conditions. (See Figure 23)
WARNING
ELECTRIC SHOCK HAZARD
Disconnect power to the unit before
servicing. Failure to follow this warning
could result in serious injury or death.
BLOWER/FAN MOTOR - TEST
Many motor capacitors are internally fused. Shorting the
terminals will blow the fuse, ruining the capacitor. A 20,000
ohm 2 watt resistor can be used to discharge capacitors
safely. Remove wires from capacitor and place resistor
across terminals. When checking a dual capacitor with a
capacitor analyzer or ohmmeter, both sides must be tested.
Capacitor Check with Capacitor Analyzer
The capacitor analyzer will show whether the capacitor is
“open” or “shorted.” It will tell whether the capacitor is within
its micro farads rating and it will show whether the capacitor
is operating at the proper power-factor percentage. The
instrument will automatically discharge the capacitor when
the test switch is released.
1.
Determine that capacitor is serviceable.
Capacitor Connections
2.
Disconnect fan motor wires from fan speed switch or
system switch.
3.
Apply “live” test cord probes on black wire and common
terminal of capacitor. Motor should run at high speed.
The starting winding of a motor can be damaged by a
shorted and grounded running capacitor. This damage
usually can be avoided by proper connection of the running
capacitor terminals.
4.
Apply “live” test cord probes on red wire and common
terminal of capacitor. Motor should run at low speed.
5.
Apply “live” test cord probes on each of the remaining
wires from the speed switch or system switch to test
intermediate speeds. If the control is in the “MoneySaver”
mode and the thermostat calls for cooling, the fan will
start - then stop after approximately 2 minutes; then the
fan and compressor will start together approximately 2
minutes later.
From the supply line on a typical 230 volt circuit, a 115 volt
potential exists from the “R” terminal to ground through a
possible short in the capacitor. However, from the “S” or start
terminal, a much higher potential, possibly as high as 400
volts, exists because of the counter EMF generated in the
start winding. Therefore, the possibility of capacitor failure
LVPXFKJUHDWHUZKHQWKHLGHQWL¿HGWHUPLQDOLVFRQQHFWHG
WRWKH³6´RUVWDUWWHUPLQDO7KHLGHQWL¿HGWHUPLQDOVKRXOG
always be connected to the supply line, or “R” terminal,
never to the “S” terminal.
When connected properly, a shorted or grounded running
capacitor will result in a direct short to ground from the “R”
terminal and will blow the line fuse. The motor protector will
protect the main winding from excessive temperature.
Figure 23
Blower/Fan Motor
Dual Rated Run Capacitor Hook-up
CAPACITORS
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before servicing.
Discharge capacitor with a 20,000 Ohm 2 Watt
resistor before handling.
)DLOXUHWRGRVRPD\UHVXOWLQSHUVRQDOLQMXU\
or death.
24
FIGURE 24
COMPONENTS TESTING (Continued)
HEATING ELEMENT (See Figure)
All electric heat models are equipped with a heating element.
The EQ08 has a 1.15 KW element.
Figure
Heating Element
DRAIN PAN VALVE
During the cooling mode of operation, condensate which
collects in the drain pan is picked up by the condenser fan
blade and sprayed onto the condenser coil. This assists
in cooling the refrigerant plus evaporating the water.
During the heating mode of operation, it is necessary that
water be removed to prevent it from freezing during cold
outside temperatures. This could cause the condenser
fan blade to freeze in the accumulated water and prevent
it from turning.
The heating element contains a fuse link and a heater limit
switch. The fuse link is in series with the power supply and
will open and interrupt the power when the temperature
UHDFKHV °F or a short circuit occurs in the heating
element. Once the fuse link separates, a new fuse link
must be installed.
NOTE: Always replace with the exact replacement.
The heater element has a high limit control. This control
is a bimetal thermostat mounted in the top of the heating
element.
6KRXOGWKHIDQPRWRUIDLORU¿OWHUEHFRPHFORJJHGWKHKLJK
limit control will open and interrupt power to the heater
before reaching an unsafe temperature condition.
To provide a means of draining this water, a bellows type
drain valve is installed over a drain opening in the base
pan.
This valve is temperature sensitive and will open when
the outside temperature reaches 40°F. The valve will
close gradually as the temperature rises above 40°F to
fully close at 60°F.
Figure 26
Bellows Assembly
Drain Pan
For EQ08N11 Only
The control is designed to open at 110°F ±6°F. Test
continuity below 110°F.
TESTING THE HEATING ELEMENT
WARNING
ELECTRIC SHOCK HAZARD
Disconnect power to the unit before
servicing. Failure to follow this warning
FRXOGUHVXOWLQVHULRXVLQMXU\RUGHDWK
Testing of the elements can be made with an ohmmeter
across the terminals after the connecting wires have been
removed. A cold resistance reading of approximately 10.11
ohms for the 1.15 KW heater should be registered.
25
REFRIGERATION SEQUENCE OF OPERATION
A good understanding of the basic operation of the
refrigeration system is essential for the service technician.
Without this understanding, accurate troubleshooting of
UHIULJHUDWLRQV\VWHPSUREOHPVZLOOEHPRUHGLI¿FXOWDQGWLPH
consuming, if not (in some cases) entirely impossible. The
refrigeration system uses four basic principles (laws) in its
operation they are as follows:
³+HDWDOZD\VÀRZVIURPDZDUPHUERG\WRDFRROHUERG\´
2. “Heat must be added to or removed from a substance
before a change in state can occur”
3. “Flow is always from a higher pressure area to a lower
pressure area.”
4. “The temperature at which a liquid or gas changes state
is dependent upon the pressure.”
The refrigeration cycle begins at the compressor. Starting
the compressor creates a low pressure in the suction line
which draws refrigerant gas (vapor) into the compressor.
The compressor then “compresses” this refrigerant, raising
its pressure and its (heat intensity) temperature.
The refrigerant leaves the compressor through the discharge
Line as a hot High pressure gas (vapor). The refrigerant
enters the condenser coil where it gives up some of its
KHDW7KHFRQGHQVHUIDQPRYLQJDLUDFURVVWKHFRLO¶V¿QQHG
surface facilitates the transfer of heat from the refrigerant to
the relatively cooler outdoor air.
:KHQDVXI¿FLHQWTXDQWLW\RIKHDWKDVEHHQUHPRYHGIURP
the refrigerant gas (vapor), the refrigerant will “condense”
(i.e. change to a liquid). Once the refrigerant has been
condensed (changed) to a liquid it is cooled even further by
WKHDLUWKDWFRQWLQXHVWRÀRZDFURVVWKHFRQGHQVHUFRLO
The RAC design determines at exactly what point (in the
condenser) the change of state (i.e. gas to a liquid) takes
place. In all cases, however, the refrigerant must be
totally condensed (changed) to a Liquid before leaving the
condenser coil.
Suction
Line
Evaporator
Coil
Metering
Device
Refrigerant
Strainer
26
The refrigerant leaves the condenser Coil through the
liquid line as a warm high pressure liquid. It next will pass
through the refrigerant drier (if so equipped). It is the function
of the drier to trap any moisture present in the system,
contaminants, and large particulate matter.
The liquid refrigerant next enters the metering device. The
metering device is a capillary tube. The purpose of the
metering device is to “meter” (i.e. control or measure) the
quantity of refrigerant entering the evaporator coil.
In the case of the capillary tube this is accomplished (by
design) through size (and length) of device, and the pressure
difference present across the device.
Since the evaporator coil is under a lower pressure (due to
the suction created by the compressor) than the liquid line,
the liquid refrigerant leaves the metering device entering the
evaporator coil. As it enters the evaporator coil, the larger
area and lower pressure allows the refrigerant to expand
and lower its temperature (heat intensity). This expansion is
often referred to as “boiling”. Since the unit’s blower is moving
LQGRRU DLU DFURVV WKH ¿QQHG VXUIDFH RI WKH HYDSRUDWRU FRLO
the expanding refrigerant absorbs some of that heat. This
results in a lowering of the indoor air temperature, hence the
“cooling” effect.
The expansion and absorbing of heat cause the liquid
refrigerant to evaporate (i.e. change to a gas). Once the
refrigerant has been evaporated (changed to a gas), it is
KHDWHGHYHQIXUWKHUE\WKHDLUWKDWFRQWLQXHVWRÀRZDFURVV
the evaporator coil.
The particular system design determines at exactly what
point (in the evaporator) the change of state (i.e. liquid to a
gas) takes place. In all cases, however, the refrigerant must
be totally evaporated (changed) to a gas before leaving the
evaporator coil.
The low pressure (suction) created by the compressor
causes the refrigerant to leave the evaporator through the
suction line as a cool low pressure vapor. The refrigerant
then returns to the compressor, where the cycle is repeated.
Discharge
Line
Condenser
Coil
Compressor
Refrigerant Drier Liquid
Line
R-410A SEALED SYSTEM REPAIR CONSIDERATIONS
WARNING
Refrigeration system under high pressure
'RQRWSXQFWXUHKHDWH[SRVHWRÀDPHRULQFLQHUDWH
OQO\FHUWL¿HGUHIULJHUDWLRQWHFKQLFLDQVVKRXOG
service this equipment.
R410A systems operate at higher pressures than
R22 equipment. Appropriate safe service and
handling practicces must be used.
Only use gauge sets designed for use with R410A.
Do not use standard R22 gauge sets.
The following is a list of important considerations when working with R-410A equipment
‡
R-410A pressure is approximately 60% higher than R-22 pressure.
‡
R-410A cylinders must not be allowed to exceed 125 F, they may leak or rupture.
‡ R-410A must never be pressurized with a mixture of air, it may become
ÀDPPDEOH
‡
6HUYLFLQJHTXLSPHQWDQGFRPSRQHQWVPXVWEHVSHFL¿FDOO\GHVLJQHGIRUXVHZLWK5$DQG
dedicated to prevent contamination.
‡
Manifold sets must be equipped with gauges capable of reading 750 psig (high side) and 200
psig (low side), with a 500-psig low-side retard.
‡
Gauge hoses must have a minimum 750-psig service pressure rating
‡
Recovery cylinders must have a minimum service pressure rating of 400 psig, (DOT 4BA400
and DOT BW400 approved cylinders).
‡
POE (Polyol-Ester) lubricants must be used with R-410A equipment.
‡
To prevent moisture absorption and lubricant contamination, do not leave the refrigeration
system open to the atmosphere longer than 1 hour.
‡
Weigh-in the refrigerant charge into the high side of the system.
‡
Introduce liquid refrigerant charge into the high side of the system.
‡
For low side pressure charging of R-410A, use a charging adaptor.
‡
8VH)ULHGULFKDSSURYHG5$¿OWHUGU\HUVRQO\
27
R-410A SEALED REFRIGERATION SYSTEM REPAIRS
IMPORTANT
SEALED SYSTEM REPAIRS TO COOL-ONLY MODELS REQUIRE THE INSTALLATION OF A LIQUID LINE DRIER.
EQUIPMENT REQUIRED:
1. Voltmeter
+LJK3UHVVXUH*DXJHWROEV
2. Ammeter
10. Low Pressure Gauge - (-30 to 200 lbs.)
3. Ohmmeter
11. Vacuum Gauge - (0 - 1000 microns)
4. E.P.A. Approved Refrigerant Recovery System
)DFLOLWLHVIRUÀRZLQJQLWURJHQWKURXJKUHIULJHUDWLRQWXELQJ
during all brazing processes.
5. Vacuum Pump (capable of 200 microns or less
vacuum.)
6. Acetylene Welder
1. Recovering refrigerant to EPA required levels.
7. Electronic Halogen Leak Detector capable of
GHWHFWLQJ+)&+\GURÀXRURFDUERQUHIULJHUDQWV
8. Accurate refrigerant charge measuring device such
as:
a. Balance Scales - 1/2 oz. accuracy
b. Charging Board - 1/2 oz. accuracy
WARNING
RISK OF ELECTRIC SHOCK
Unplug and/or disconnect all electrical power
to the unit before performing inspections,
maintenances or service.
Failure to do so could result in electric shock,
VHULRXVLQMXU\RUGHDWK
WARNING
HIGH PRESSURE HAZARD
Sealed Refrigeration System contains refrigerant
and oil under high pressure.
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with refrigerants.
Failure to follow these procedures could
UHVXOWLQVHULRXVLQMXU\RUGHDWK
Refrigerant Charging
NOTE: Because the Kuhl Q system is a sealed system,
service process tubes will have to be installed. First install a
line tap and remove refrigerant from system. Make necessary
sealed system repairs and vacuum system. Crimp process
tube line and solder end shut. Do not leave a service valve in
the sealed system.
28
EQUIPMENT MUST BE CAPABLE OF:
2. Evacuation from both the high side and low side of the
system simultaneously.
3. Introducing refrigerant charge into high side of the
system.
4. Accurately weighing the refrigerant charge introduced
into the system.
Proper refrigerant charge is essential to proper unit operation.
Operating a unit with an improper refrigerant charge will
UHVXOWLQUHGXFHGSHUIRUPDQFHFDSDFLW\DQGRUHI¿FLHQF\
Accordingly, the use of proper charging methods during
servicing will insure that the unit is functioning as designed
and that its compressor will not be damaged.
7RRPXFKUHIULJHUDQWRYHUFKDUJHLQWKHV\VWHPLVMXVWDVEDG
(if not worse) than not enough refrigerant (undercharge). They
both can be the source of certain compressor failures if they
remain uncorrected for any period of time. Quite often, other
SUREOHPV VXFK DV ORZ DLU ÀRZ DFURVV HYDSRUDWRU HWF DUH
misdiagnosed as refrigerant charge problems. The refrigerant
circuit diagnosis chart will assist you in properly diagnosing
these systems.
An overcharged unit will at times return liquid refrigerant
(slugging) back to the suction side of the compressor eventually
causing a mechanical failure within the compressor. This
mechanical failure can manifest itself as valve failure, bearing
IDLOXUH DQGRU RWKHU PHFKDQLFDO IDLOXUH 7KH VSHFL¿F W\SH RI
IDLOXUHZLOOEHLQÀXHQFHGE\WKHDPRXQWRIOLTXLGEHLQJUHWXUQHG
and the length of time the slugging continues.
Not enough refrigerant (undercharge) on the other hand,
will cause the temperature of the suction gas to increase to
WKH SRLQW ZKHUH LW GRHV QRW SURYLGH VXI¿FLHQW FRROLQJ IRU WKH
compressor motor. When this occurs, the motor winding
temperature will increase causing the motor to overheat
and possibly cycle open the compressor overload protector.
Continued overheating of the motor windings and/or cycling
of the overload will eventually lead to compressor motor or
overload failure.
REFRIGERATION SEQUENCE OF OPERATION
A good understanding of the basic operation of the
refrigeration system is essential for the service technician.
Without this understanding, accurate troubleshooting of
UHIULJHUDWLRQV\VWHPSUREOHPVZLOOEHPRUHGLI¿FXOWDQGWLPH
consuming, if not (in some cases) entirely impossible. The
refrigeration system uses four basic principles (laws) in its
operation they are as follows:
³+HDWDOZD\VÀRZVIURPDZDUPHUERG\WRDFRROHUERG\´
2. “Heat must be added to or removed from a substance
before a change in state can occur”
3. “Flow is always from a higher pressure area to a lower
pressure area.”
4. “The temperature at which a liquid or gas changes state
is dependent upon the pressure.”
The refrigeration cycle begins at the compressor. Starting
the compressor creates a low pressure in the suction line
which draws refrigerant gas (vapor) into the compressor.
The compressor then “compresses” this refrigerant, raising
its pressure and its (heat intensity) temperature.
The refrigerant leaves the compressor through the discharge
Line as a hot High pressure gas (vapor). The refrigerant
enters the condenser coil where it gives up some of its
KHDW7KHFRQGHQVHUIDQPRYLQJDLUDFURVVWKHFRLO¶V¿QQHG
surface facilitates the transfer of heat from the refrigerant to
the relatively cooler outdoor air.
:KHQDVXI¿FLHQWTXDQWLW\RIKHDWKDVEHHQUHPRYHGIURP
the refrigerant gas (vapor), the refrigerant will “condense”
(i.e. change to a liquid). Once the refrigerant has been
condensed (changed) to a liquid it is cooled even further by
WKHDLUWKDWFRQWLQXHVWRÀRZDFURVVWKHFRQGHQVHUFRLO
The RAC design determines at exactly what point (in the
condenser) the change of state (i.e. gas to a liquid) takes
place. In all cases, however, the refrigerant must be
totally condensed (changed) to a Liquid before leaving the
condenser coil.
Suction
Line
Evaporator
Coil
Metering
Device
Refrigerant
Strainer
The refrigerant leaves the condenser Coil through the
liquid line as a warm high pressure liquid. It next will pass
through the refrigerant drier (if so equipped). It is the function
of the drier to trap any moisture present in the system,
contaminants, and large particulate matter.
The liquid refrigerant next enters the metering device. The
metering device is a capillary tube. The purpose of the
metering device is to “meter” (i.e. control or measure) the
quantity of refrigerant entering the evaporator coil.
In the case of the capillary tube this is accomplished (by
design) through size (and length) of device, and the pressure
difference present across the device.
Since the evaporator coil is under a lower pressure (due to
the suction created by the compressor) than the liquid line,
the liquid refrigerant leaves the metering device entering the
evaporator coil. As it enters the evaporator coil, the larger
area and lower pressure allows the refrigerant to expand
and lower its temperature (heat intensity). This expansion is
often referred to as “boiling”. Since the unit’s blower is moving
LQGRRU DLU DFURVV WKH ¿QQHG VXUIDFH RI WKH HYDSRUDWRU FRLO
the expanding refrigerant absorbs some of that heat. This
results in a lowering of the indoor air temperature, hence the
“cooling” effect.
The expansion and absorbing of heat cause the liquid
refrigerant to evaporate (i.e. change to a gas). Once the
refrigerant has been evaporated (changed to a gas), it is
KHDWHGHYHQIXUWKHUE\WKHDLUWKDWFRQWLQXHVWRÀRZDFURVV
the evaporator coil.
The particular system design determines at exactly what
point (in the evaporator) the change of state (i.e. liquid to a
gas) takes place. In all cases, however, the refrigerant must
be totally evaporated (changed) to a gas before leaving the
evaporator coil.
The low pressure (suction) created by the compressor
causes the refrigerant to leave the evaporator through the
suction line as a cool low pressure vapor. The refrigerant
then returns to the compressor, where the cycle is repeated.
Discharge
Line
Condenser
Coil
Compressor
Refrigerant Drier Liquid
Line
R-410A SEALED REFRIGERATION SYSTEM REPAIRS
IMPORTANT
SEALED SYSTEM REPAIRS TO COOL-ONLY MODELS REQUIRE THE INSTALLATION OF A LIQUID LINE DRIER.
EQUIPMENT REQUIRED:
1. Voltmeter
+LJK3UHVVXUH*DXJHWROEV
2. Ammeter
10. Low Pressure Gauge - (-30 to 200 lbs.)
3. Ohmmeter
11. Vacuum Gauge - (0 - 1000 microns)
4. E.P.A. Approved Refrigerant Recovery System
)DFLOLWLHVIRUÀRZLQJQLWURJHQWKURXJKUHIULJHUDWLRQWXELQJ
during all brazing processes.
5. Vacuum Pump (capable of 200 microns or less
vacuum.)
6. Acetylene Welder
1. Recovering refrigerant to EPA required levels.
7. Electronic Halogen Leak Detector capable of
GHWHFWLQJ+)&+\GURÀXRURFDUERQUHIULJHUDQWV
8. Accurate refrigerant charge measuring device such
as:
a. Balance Scales - 1/2 oz. accuracy
b. Charging Board - 1/2 oz. accuracy
WARNING
RISK OF ELECTRIC SHOCK
Unplug and/or disconnect all electrical power
to the unit before performing inspections,
maintenances or service.
Failure to do so could result in electric shock,
VHULRXVLQMXU\RUGHDWK
WARNING
HIGH PRESSURE HAZARD
Sealed Refrigeration System contains refrigerant
and oil under high pressure.
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with refrigerants.
Failure to follow these procedures could
UHVXOWLQVHULRXVLQMXU\RUGHDWK
Refrigerant Charging
NOTE: Because the KuhlQ system is a sealed system,
service process tubes will have to be installed. First install a
line tap and remove refrigerant from system. Make necessary
sealed system repairs and vacuum system. Crimp process
tube line and solder end shut. Do not leave a service valve in
the sealed system.
30
EQUIPMENT MUST BE CAPABLE OF:
2. Evacuation from both the high side and low side of the
system simultaneously.
3. Introducing refrigerant charge into high side of the
system.
4. Accurately weighing the refrigerant charge introduced
into the system.
Proper refrigerant charge is essential to proper unit operation.
Operating a unit with an improper refrigerant charge will
UHVXOWLQUHGXFHGSHUIRUPDQFHFDSDFLW\DQGRUHI¿FLHQF\
Accordingly, the use of proper charging methods during
servicing will insure that the unit is functioning as designed
and that its compressor will not be damaged.
7RRPXFKUHIULJHUDQWRYHUFKDUJHLQWKHV\VWHPLVMXVWDVEDG
(if not worse) than not enough refrigerant (undercharge). They
both can be the source of certain compressor failures if they
remain uncorrected for any period of time. Quite often, other
SUREOHPV VXFK DV ORZ DLU ÀRZ DFURVV HYDSRUDWRU HWF DUH
misdiagnosed as refrigerant charge problems. The refrigerant
circuit diagnosis chart will assist you in properly diagnosing
these systems.
An overcharged unit will at times return liquid refrigerant
(slugging) back to the suction side of the compressor eventually
causing a mechanical failure within the compressor. This
mechanical failure can manifest itself as valve failure, bearing
IDLOXUH DQGRU RWKHU PHFKDQLFDO IDLOXUH 7KH VSHFL¿F W\SH RI
IDLOXUHZLOOEHLQÀXHQFHGE\WKHDPRXQWRIOLTXLGEHLQJUHWXUQHG
and the length of time the slugging continues.
Not enough refrigerant (undercharge) on the other hand,
will cause the temperature of the suction gas to increase to
WKH SRLQW ZKHUH LW GRHV QRW SURYLGH VXI¿FLHQW FRROLQJ IRU WKH
compressor motor. When this occurs, the motor winding
temperature will increase causing the motor to overheat
and possibly cycle open the compressor overload protector.
Continued overheating of the motor windings and/or cycling
of the overload will eventually lead to compressor motor or
overload failure.
Method Of Charging / Repairs
The acceptable method for charging the RAC system is the
Weighed in Charge Method. The weighed in charge method is
applicable to all units. It is the preferred method to use, as it is
the most accurate.
The weighed in method should always be used whenever
a charge is removed from a unit such as for a leak repair,
compressor replacement, or when there is no refrigerant
charge left in the unit. To charge by this method, requires the
following steps:
1. Install a piercing valve to remove refrigerant from the
sealedsystem. (Piercing valve must be removed from the
system before recharging.)
2. Recover Refrigerant in accordance with EPA regulations.
WARNING
BURN HAZARD
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with a torch.
Failure to follow these procedures could
UHVXOWLQPRGHUDWHRUVHULRXVLQMXU\
3. Install a process tube to sealed system.
CAUTION
FREEZE HAZARD
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with liquid refrigerant.
Failure to follow these procedures could
UHVXOWLQPLQRUWRPRGHUDWHLQMXU\
4. Make necessary repairs to system.
5. Evacuate system to 200 microns or less.
6. Weigh in refrigerant with the property quantity of R410-A
refrigerant.
7. Start unit, and verify performance.
WARNING
BURN HAZARD
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with a torch.
Failure to follow these procedures could
UHVXOWLQPRGHUDWHRUVHULRXVLQMXU\
8. Crimp the process tube and solder the end shut.
31
WARNING
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before service or
installation.
HIGH PRESSURE HAZARD
Sealed Refrigeration System contains refrigerant
and oil under high pressure.
Extreme care must be used, if it becomes
necessary to work on equipment with power
applied.
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with refrigerants.
)DLOXUHWRGRVRFRXOGUHVXOWLQVHULRXVLQMXU\RU
death.
Failure to follow these procedures could
UHVXOWLQVHULRXVLQMXU\RUGHDWK
Undercharged Refrigerant Systems
An undercharged system will result in poor performance
(low pressures, etc.) in both the heating and cooling cycle.
Whenever you service a unit with an undercharge of
refrigerant, always suspect a leak. The leak must be
repaired before charging the unit.
A check of the amperage drawn by the compressor
motor should show a lower reading. (Check the Unit
6SHFL¿FDWLRQ $IWHU WKH XQLW KDV UXQ WR PLQXWHV
check the gauge pressures. Gauges connected to system
with an undercharge will have low head pressures and
substantially low suction pressures.
To check for an undercharged system, turn the unit on,
allow the compressor to run long enough to establish
working pressures in the system (15 to 20 minutes).
During the cooling cycle you can listen carefully at the exit
of the metering device into the evaporator; an intermittent
hissing and gurgling sound indicates a low refrigerant
charge. Intermittent frosting and thawing of the evaporator
is another indication of a low charge, however, frosting
DQG WKDZLQJ FDQ DOVR EH FDXVHG E\ LQVXI¿FLHQW DLU RYHU
the evaporator.
Checks for an undercharged system can be made at
the compressor. If the compressor seems quieter than
normal, it is an indication of a low refrigerant charge.
Overcharged Refrigerant Systems
Compressor amps will be near normal or higher.
Noncondensables can also cause these symptoms.
7R FRQ¿UP UHPRYH VRPH RI WKH FKDUJH LI FRQGLWLRQV
improve, system may be overcharged. If conditions don’t
improve, Noncondensables are indicated.
Whenever an overcharged system is indicated, always
PDNH VXUH WKDW WKH SUREOHP LV QRW FDXVHG E\ DLU ÀRZ
SUREOHPV,PSURSHUDLUÀRZRYHUWKHHYDSRUDWRUFRLOPD\
indicate some of the same symptoms as an over charged
system.
An overcharge can cause the compressor to fail, since it
would be “slugged” with liquid refrigerant.
The charge for any system is critical. When the compressor
is noisy, suspect an overcharge, when you are sure that
the air quantity over the evaporator coil is correct. Icing
32
of the evaporator will not be encountered because the
refrigerant will boil later if at all. Gauges connected to
system will usually have higher head pressure (depending
upon amount of over charge). Suction pressure should be
slightly higher.
Restricted Refrigerant System
Troubleshooting a restricted refrigerant system can be
GLI¿FXOWThe following procedures are the more common
problems and solutions to these problems. There are two
types of refrigerant restrictions: Partial restrictions and
complete restrictions.
A partial restriction allows some of the refrigerant to
circulate through the system.
With a complete restriction there is no circulation of
refrigerant in the system.
at the metering device entrance to the evaporator. The
evaporator in a partial restriction could be partially frosted
or have an ice ball close to the entrance of the metering
device. Frost may continue on the suction line back to the
compressor.
Often a partial restriction of any type can be found by feel,
as there is a temperature difference from one side of the
restriction to the other.
Gauges connected to a completely restricted system
will run in a deep vacuum. When the unit is shut off, the
gauges will not equalize at all.
With a complete restriction, there will be no sound at the
metering device entrance. An amperage check of the
compressor with a partial restriction may show normal
FXUUHQWZKHQFRPSDUHGWRWKHXQLWVSHFL¿FDWLRQ:LWKD
complete restriction the current drawn may be considerably
less than normal, as the compressor is running in a deep
vacuum (no load.) Much of the area of the condenser will
be relatively cool since most or all of the liquid refrigerant
will be stored there.
A quick check for either condition begins at the evaporator.
With a partial restriction, there may be gurgling sounds
The following conditions are based primarily on a system
in the cooling mode.
Restricted refrigerant systems display the same symptoms
as a “low-charge condition.”
When the unit is shut off, the gauges may equalize very
slowly.
33
COMPRESSOR CHECKS
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before service or
installation. Extreme care must be used, if it
becomes necessary to work on equipment with
power applied.
The compressor is equipped with an external overload
which senses both motor amperage and winding temperature. High motor temperature or amperage heats the
overload causing it to open, breaking the common circuit
within the compressor.
Locked Rotor Voltage (L.R.V.) Test
Heat generated within the compressor shell, usually due
to recycling of the motorLVVORZWRGLVVLSDWH,WPD\WDNH
anywhere from a few minutes to several hours for the
overload to reset.
Locked rotor voltage (L.R.V.) is the actual voltage available
at the compressor under a stalled condition.
Checking the External Overload
Failure to do so could result in serious injury or
death.
Single Phase Connections
Disconnect power from unit. Using a voltmeter, attach one
lead of the meter to the run “R” terminal on the compressor
and the other lead to the common “C” terminal of the compressor. Restore power to unit.
Determine L.R.V.
Start the compressor with the volt meter attached; then stop
the unit. Attempt to restart the compressor within a couple
of seconds and immediately read the voltage on the meter.
The compressor under these conditions will not start and will
usually kick out on overload within a few seconds since the
pressures in the system will not have had time to equalize.
Voltage should be at or above minimum voltage of 197 VAC,
DVVSHFL¿HGRQWKHUDWLQJSODWH,IOHVVWKDQPLQLPXPFKHFN
for cause of inadequate power supply; i.e., incorrect wire
size, loose electrical connections, etc.
Amperage (L.R.A.) Test
The running amperage of the compressor is the most important of these readings. A running amperage higher than that
indicated in the performance data indicates that a problem
exists mechanically or electrically.
Single Phase Running and L.R.A. Test
NOTE:&RQVXOWWKHVSHFL¿FDWLRQDQGSHUIRUPDQFHVHFWLRQ
for running amperage. The L.R.A. can also be found on the
rating plate.
Select the proper amperage scale and clamp the meter
probe around the wire to the “C” terminal of the compressor. Turn on the unit and read the running amperage on
the meter,IWKHFRPSUHVVRUGRHVQRWVWDUWWKHUHDGLQJ
will indicate the locked rotor amperage (L.R.A.).
34
External Overload
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before service or
installation. Extreme care must be used, if it
becomes necessary to work on equipment
with power applied.
Failure to do so could result in serious injury or
death.
WARNING
BURN HAZARD
Certain unit components operate at
temperatures hot enough to cause burns.
Proper safety procedures must be followed,
and proper protective clothing must be
worn.
Failure to follow this warning could result
in moderate to serious injury.
With power off, remove the leads from compressor termiQDOV,IWKHFRPSUHVVRULVKRWDOORZWKHRYHUORDGWRFRRO
before starting check. Using an ohmmeter, test continuLW\DFURVVWKHWHUPLQDOVRIWKHH[WHUQDORYHUORDG,I\RX
do not have continuity; this indicates that the overload is
open and must be replaced.
Single Phase Resistance Test
Remove the leads from the compressor terminals and set
the ohmmeter on the lowest scale (R x 1).
Touch the leads of the ohmmeter from terminals common
to start (“C” to “S”). Next, touch the leads of the ohmmeter
from terminals common to run (“C” to “R”).
Many compressor failures are caused by the following
conditions:
,PSURSHUDLUÀRZRYHUWKHHYDSRUDWRU
2.
Overcharged refrigerant system causing liquid to be
returned to the compressor.
3.
Restricted refrigerant system.
4.
Lack of lubrication.
In a single phase PSC compressor motor, the highest
value will be from the start to the run connections (“S” to
“R”). The next highest resistance is from the start to the
common connections (“S” to “C”). The lowest resistance
is from the run to common. (“C” to “R”) Before replacing a
compressor, check to be sure it is defective.
5.
Liquid refrigerant returning to compressor causing oil
to be washed out of bearings.
6.
Noncondensables such as air and moisture in
the system. Moisture is extremely destructive to a
refrigerant system.
GROUND TEST
Use an ohmmeter set on its highest scale. Touch one
lead to the compressor body (clean point of contact as
a good connection is a must) and the other probe in turn
to each compressor terminal. If a reading is obtained the
compressor is grounded and must be replaced.
7.
Defective capacitors.
Add values “C” to “S” and “C” to “R” together and
check resistance from start to run terminals (“S” to “R”).
Resistance “S” to “R” should equal the total of “C” to “S”
and “C” to “R.”
Check the complete electrical system to the compressor
and compressor internal electrical system, check to be
certain that compressor is not out on internal overload.
Complete evaluation of the system must be made
whenever you suspect the compressor is defective. If
the compressor has been operating for sometime, a
careful examination must be made to determine why the
compressor failed.
35
COMPRESSOR REPLACEMENT
Recommended procedure for compressor
replacement
3.
After all refrigerant has been recovered, disconnect
suction and discharge lines from the compressor and
remove compressor. Be certain to have both suction
and discharge process tubes open to atmosphere.
4.
Carefully pour a small amount of oil from the suction
stub of the defective compressor into a clean container.
5.
Using an acid test kit (one shot or conventional kit), test
the oil for acid content according to the instructions
with the kit.
6.
If any evidence of a burnout is found, no matter how
slight, the system will need to be cleaned up following
proper procedures.
7.
Install the replacement compressor.
WARNING
RISK OF ELECTRIC SHOCK
Unplug and/or disconnect all electrical power
to the unit before performing inspections,
maintenances or service.
Failure to do so could result in electric shock,
VHULRXVLQMXU\RUGHDWK
1.
Be certain to perform all necessary electrical and
refrigeration tests to be sure the compressor is
actually defective before replacing.
WARNING
WARNING
HIGH PRESSURE HAZARD
Sealed Refrigeration System contains refrigerant
and oil under high pressure.
EXPLOSION HAZARD
The use of nitrogen requires a pressure
regulator. Follow all safety procedures and
wear protective safety clothing etc.
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with refrigerants.
Failure to follow proper safety procedures
UHVXOWLQVHULRXVLQMXU\RUGHDWK
Failure to follow these procedures could
UHVXOWLQVHULRXVLQMXU\RUGHDWK
2.
Recover all refrigerant from the system though
the process tubes. PROPER HANDLING OF
RECOVERED REFRIGERANT ACCORDING TO
EPA REGULATIONS IS REQUIRED. Do not use
gauge manifold for this purpose if there has been
a burnout. You will contaminate your manifold and
hoses. Use a Schrader valve adapter and copper
tubing for burnout failures.
WARNING
HIGH TEMPERATURES
([WUHPHFDUHSURSHUMXGJPHQWDQGDOOVDIHW\
procedures must be followed when testing,
troubleshooting, handling or working around
unit while in operation with high temperature
components. Wear protective safety aids
such as: gloves, clothing etc.
8. Pressurize with a combination of R410-A and nitrogen
and leak test all connections with an electronic or
Halide leak detector. Recover refrigerant and repair
any leaks found.
Repeat Step 8 to insure no more leaks are present.
(YDFXDWHWKHV\VWHPZLWKDJRRGYDFXXPSXPSFDSDEOH
RI D ¿QDO YDFXXP RI PLFURQV RU OHVV7KH V\VWHP
should be evacuated through both liquid line and suction
line gauge ports. While the unit is being evacuated, seal
all openings on the defective compressor. Compressor
manufacturers will void warranties on units received not
properly sealed. Do not distort the manufacturers tube
connections.
CAUTION
FREEZE HAZARD
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with liquid refrigerant.
Failure to do so could result in serious burn
LQMXU\
Failure to follow these procedures could
UHVXOWLQPLQRUWRPRGHUDWHLQMXU\
NOTICE
FIRE HAZARD
The use of a torch requires extreme care and proper
MXGJPHQW )ROORZ DOO VDIHW\ UHFRPPHQGHG SUHFDXWLRQV
DQG SURWHFW VXUURXQGLQJ DUHDV ZLWK ¿UH SURRI PDWHULDOV
+DYHD¿UHH[WLQJXLVKHUUHDGLO\DYDLODEOH)DLOXUHWRIROORZ
this notice could result in moderate to serious property
damage.
36
10.
Recharge the system with the correct amount of
refrigerant. The proper refrigerant charge will be
found on the unit rating plate. The use of an accurate
measuring device, such as a charging cylinder,
electronic scales or similar device is necessary.
SPECIAL PROCEDURE IN THE CASE OF MOTOR
COMPRESSOR BURNOUT
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before service or
installation.
)DLOXUHWRGRVRPD\UHVXOWLQSHUVRQDOLQMXU\
or death.
Available Accessories
Carbon Filter Kits
Each kit contains three (3) ¿lters.
KWCFQ - Carbon ¿lter kit for "Q" chassis models.
Window Installation Kits
(Standard in Kühl Models without Heat)
WARNING
HIGH PRESSURE HAZARD
Sealed Refrigeration System contains refrigerant
and oil under high pressure.
Proper safety procedures must be followed,
and proper protective clothing must be worn
when working with refrigerants.
Failure to follow these procedures could
UHVXOWLQVHULRXVLQMXU\RUGHDWK
KWIKQ
FriedrichLink™ Adapter Accessory:
KWIFI - FriedrichLink™ Adapter Accessory for wireless control and
additional programming options
Decorative Color Front Panel Kits:
KWBGEQA - Q Model Decorative Front Cover in Classic Beige
KWBLKQA - Q Model Decorative Front Cover in Black Onyx
KWBLUQA - Q Model Decorative Front Cover in Cobalt Blue
KWPNKQA - Q Model Decorative Front Cover in Pink Diamond
WARNING
EXPLOSION HAZARD
The use of nitrogen requires a pressure
regulator. Follow all safety procedures and
wear protective safety clothing etc.
KWREDQA - Q Model Decorative Front Cover in Deep Red
KWWHTQA - Q Model Decorative Front Cover in Designer White
See www.friedrich.com for additional accessories for your unit.
Failure to follow proper safety procedures
UHVXOWLQVHULRXVLQMXU\RUGHDWK
1. Recover all refrigerant and oil from the system.
2. 5HPRYHFRPSUHVVRUFDSLOODU\WXEHDQG¿OWHUGULHU
from the system.
3. Flush evaporator condenser and all connecting
tubing with dry nitrogen or equivalent. Use approved
ÀXVKLQJDJHQWWRUHPRYHDOOFRQWDPLQDWLRQIURP
system. Inspect suction and discharge line for
carbon deposits. Remove and clean if necessary.
Ensure all acid is neutralized.
4. Reassemble the system, including new drier strainer
and capillary tube.
5. Proceed with step 8-10 on previous page.
ROTARY COMPRESSOR SPECIAL TROUBLESHOOTING
AND SERVICE
Basically, troubleshooting and servicing rotary compressors is the same as on the reciprocating compressor with
only one main exception:
NEVER, under any circumstances, liquid charge a rotary
compressor through the LOW side. Doing so would cause
permanent damage to the new compressor.
37
Standard Filter Cleaning / Installation Instructions
STEP 1.
Swing the door open and remove the ¿lter by grasping the
¿lter grip and pushing the ¿lter holder upward and outward.
STEP 2.
Clean the front frame by washing the dirt from the ¿lter. Use a
mild soap solution if necessary. Allow ¿lter to dry.
STEP 3.
Install the ¿lter back into the unit. Follow the Instructions on
the inside of the front door.
Figure 3
Figure 2
FILTER
DOOR
FILTER
DOOR
FRR075
FILTER FRAME
INSTRUCTIONS
FRR076
How to Remove the Front Cover
Unplug unit.
STEP 1.
Open the Decorative Front Cover, and remove the 4 screws.
Save to reinstall later.
Figure 18
UNIT COMES WITH POWER CORD
ALREADY INSTALLED AND ROUTED
TO THE LEFT SIDE
SCREWS ATTACHING DECORATIVE
FRONT COVER TO UNIT
(4 REQUIRED)
SCREW, #8 x 1/2” PHILLIPS
HEAD (SEE ILLUSTRATION
ITEM #2, PAGE 22)
2 REQUIRED (1 EACH SIDE)
FRR098
38
ROUTINE MAINTENANCE
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before inspections,
maintenances, or service.
Failure to do so could result in serious injury
or death.
WARNING
EXCESSIVE WEIGHT HAZARD
Use two people to lift or carry the unit, and wear
proper protective clothing.
DECORATIVE FRONT COVER
The decorative front and discharge air grille may be
cleaned with a mild soap or detergent. Do NOT use
solvents or hydrocarbon based cleaners such as
acetone, naphtha, gasoline, benzene, etc., to clean
the decorative front or air discharge grilles
Use a damp (not wet) cloth when cleaning the control
area to prevent water from entering unit, and possibly
damaging the electronic control.
COILS AND BASE PAN
The indoor coil (evaporator coil), the outdoor coil
(condenser coil) and base pan should be inspected
periodically (yearly or bi-yearly) and cleaned of all
debris (lint, dirt, leaves, paper, etc.). Clean the coils
and base pan with a soft brush and compressed air
or vacuum. If using a pressure washer, be careful
Failure to do so may result in personal injury.
up and down motion in the direction of the vertical
WARNING
CUT/SEVER HAZARD
Be careful with the sharp edges and corners.
Wear protective clothing and gloves, etc.
Failure to do so could result in serious injury.
NOTICE
personnel only. Use proper protection on surrounding
property. Failure to follow this notice could result in
moderate or serious property damage.
Cover all electrical components to protect them from
water or spray. Allow the unit to dry thoroughly before
reinstalling it in the sleeve.
BLOWER WHEEL / HOUSING / CONDENSER FAN /
SHROUD
Inspect the indoor blower and its housing, evaporator
blade, condenser fan blade and condenser shroud
periodically (yearly or bi-yearly) and clean of all debris
(lint, dirt, mold, fungus, etc.). Clean the blower housing
area and blower wheel with an antibacterial / antifungal
cleaner. Use a biodegradable cleaning agent and
degreaser on condenser fan and condenser shroud.
Use warm or cold water when rinsing these items.
Allow all items to dry thoroughly before reinstalling
them.
NOTICE
Do not use a caustic coil cleaning agent on coils or base
pan. Use a biodegradable cleaning agent and degreaser,
to prevent damage to the coil and/or base pan.
To Remove, Wash and Replace Filter
Lower front panel (See Figure 2). Use handle on filter to flex
filter up and out of retainer. Remove filter from unit (See
Figure 3). Clean filter monthly or more frequently if needed.
Clean the filters with a mild detergent in warm water and
allow to dry thoroughly before reinstalling. Refer to
accessories section for filter options.
ELECTRONIC / ELECTRICAL / MECHANICAL
Periodically (at least yearly or bi-yearly): inspect
all control components: electronic, electrical and
mechanical, as well as the power supply. Use proper
conditioning or refrigeration thermometer to check
testing instruments (voltmeter, ohmmeter, ammeter,
wattmeter, etc.) to perform electrical tests. Use an air
room, outdoor and coil operating temperatures. Use
an electronic tester to measure wet bulb temperatures
indoors and outdoors.
ROUTINE MAINTENANCE (Continued)
NOTICE
Do not drill holes in the bottom of the drain pan or the
underside of the unit. Not following this notice could
result in damage to the unit or condensate water leaking
inappropriately which could cause water damage to
surrounding property.
SLEEVE / DRAIN
Inspect the sleeve and drain system periodically (at least yearly or bi-yearly) and clean of all obstructions and
debris. Clean both areas with an antibacterial and antifungal cleaner. Rinse both items thoroughly with water and
ensure that the drain outlets are operating correctly. Check the sealant around the sleeve and reseal areas as
needed.
CLEARANCES
Inspect the surrounding area (inside and outside) to ensure that the unit’s clearances have not been compromised or
altered.
Condenser
Compressor
Discharge Air
Relay Board
Key Pad and Electronic
Control Board
Sleeve
Evaporator Coil
Condenser Fan Blade
Blower Motor
Return Air
40
Blower Wheel
After Maintenance/Repair Start-Up
Checklist & Notes
‹ Inspect and ensure that all components and accessories have been
installed properly and that they have not been damaged during the
installation progress.
‹ Check the condensate water drain(s) to ensure that they are adequate
for the removal of condensate water, and that they meet the approval
of the end user.
‹ Ensure that all installation instructions concerning clearances around
the unit have been adhered to. Check to ensure that the unit air ¿lter,
indoor coil, and outdoor coil are free from any obstructions.
‹ Ensure that the circuit breaker(s) or fuse(s) and supply circuit wire
size have been sized correctly. If the unit was supplied with a power
supply cord, insure that it is stored properly.
‹ Ensure that the entire installation is in compliance with all applicable
national and local codes and ordinances having jurisdiction.
‹ Secure components and accessories, such as a decorative front
cover.
‹ Start the unit and check for proper operation of all components in
each mode of operation.
This is a warm weather appliance
Your air conditioner is designed to cool in warm weather when the outside
temperature is above 60°F (15.6°C) and below 115°F (46.1°C), so it won't
cool a room if it is already cool outside.
Condensation is normal
Air conditioners actually pump the heat and humidity from your room to the
outside. Humidity becomes water, and your air conditioner will use most
of the water to keep the outside coil cool. If there is excessive humidity,
there may be excess water that will drip outside. This is normal operation.
Frosting
This usually occurs because of insuf¿cient airÀow across the coils, a dirty
¿lter, cool damp weather, or all of these. Set the SYSTEM mode to FAN
ONLY and the frost will disappear. Setting the thermostat a little warmer
will probably prevent the frosting from recurring.
Noises
All air conditioners make some noise. Friedrich units are designed to
operate as quietly as possible. An air conditioner mounted in a wall is quieter
than one mounted in a window. It is important to ensure that the chassis
seal gasket (Item 14) is properly installed (refer to installation instructions).
‹ Instruct the owner or operator of the units operation, and the
manufacturer's Routine Maintenance.
NOTE:
A log for recording the dates of maintenance and/or service is
recommended.
‹ Present the owner or operator of the equipment with the Installation
& Operation Manual, all accessory installation instructions, and the
name, address and telephone number of the Authorized Friedrich
Warranty Service Company in the area for future reference if
necessary.
41
42
How to Check the Diagnostic Codes
Erasing the Diagnostic Codes
See codes chart on next page.
F
F
AUTO FAN
AUTO FAN
SET POINT
SET POINT
To check the active system errors, press the
FAN
SPEED
&
keys for 3 sec.
An “E” will appear in the display. Use the
or
keys to scroll through
any system errors. Only active errors will be shown. The display error
mode will time out in 15 seconds with no key activity.
Press and hold the
TIMER
SCHEDULE
and
buttons simultaneously for 3 sec.
The “E” will blink for 3 seconds.
F
AUTO FAN
SET POINT
ON
After the “E” blinks for 3 seconds, the display returns to normal.
Press the
key to view the next error. Press the SELECT key to exit.
F
AUTO FAN
SET POINT
Normal display.
43
ERROR CODES
Error
Code
1
2
3
4
Problem
Front Panel Button Stuck For More
Than 20 Seconds
Input Voltage Out of Specification (103
- 127 / 187 - 253)
Indoor Temperature Sensor is Open or
Shorted
Indoor Coil Temperature Sensor is
Open or Shorted
5
Outdoor Coil Temperature Sensor is
Open or Shorted
6
Outdoor Coil > (grater than) 175 F
7
8
9
10
11
Control Board's Action
Continue to monitor for "OPEN" (Unstuck) switch. Do not process switch
input.
Open all relays until voltage is back within specs. Resume operation
Set temp to 75°F in COOLING or 68°F in HEATING. Unit continues to
operate
Control Board sets temp to a default of 40°F. Override sensor. Unit
continues to operate.
Sets temp to 20°F. Override sensor. Continue operation. Use Elec Heat if
available for HEATING. If not available use HEAT PUMP if outdoor temp
allows.
Shut down for 5 min. Resume operation for 3 min. Continues to monitor. If
test fails 3 times, the unit operation is locked out. Unplug and replug to
reset.
Turn compressor off. Run High Fan speed. When coil temp reachs 45°F
resume operation after lockout time.
Indoor Coil < (less than) 30 F for 2
consecutive minutes
Unit Cycles > (grater than) 9 Times per
Continue operation. Continue to monitor. Take no action. Log Only.
hour
Unit Cycles < (less than) 3 Times per
Continue operation. Continue to monitor. Take no action. Log Only.
Hour
Only used if Electric Heat is available. Run High Speed and Electric heat
Room Freeze Protection
until room temp reaches 46°F. Display "FRZ" during operation. Logged
Only
Unit operates based on standard t-stat connection. If miswired, unit will not
WallStat Problem or Connection Issue
not operate. (See pages 32 and 68)
12
Not Applicable
Not Applicable
13
Not Applicable
Not Applicable
14
Discharge Air Temperature Sensor is
Open or Shorted
Override Sensor. Set temp to 75°F. Continue to monitor. Set error code 14
ON.
15
Not Applicable
Not Applicable
16
Temperature Beyond Operating Limits
Ambient temp < (less than) 0°F and ambient temp > (greater than) 130°F.
Set error code 16 ON. When cleared return unit to normal.
17
Equipment Doesn't Meet Minimum
Configuration
Must have compressor enabled and at least 2 fan speeds
18
Not Applicable
Not Applicable
19
Not Applicable
Not Applicable
20
Not Applicable
Not Applicable
21
Not Applicable
Not Applicable
22
Outdoor Coil Temperature < 30 F for 2 Unit will use electric heat to satisfy heating demands until temp is greater
than 45°F. Unit must be a Heat Pump with electric heat.
consecutive Minutes
23
Not Applicable
Not Applicable
24
Not Applicable
Not Applicable
Key Sequence
Action
To Access Error Codes
Press the fan speed and key for 3 seconds
Reset Error Codes & Error History Press + timer/schedule for 3 seconds
44
When you have entered the Error Codes section, an “E” will appear. Use the up and down
Only active error codes will display.
keys to scroll through error codes.
Test Mode
This function is used to test the compressor operation. By turning it on,
it allows the service technician to bypass the compressor’s 3 minute
time delay.
F
AUTO FAN
SET POINT
FAN
FAN
Press the MODE
, SPEED
, & SCHEDULE buttons simultaneously for 3 seconds.
This will activate the test mode.
TIMER
ON
The ON icon will appear for 5 seconds and the display will then revert to
the normal display. The test mode will time out after 1 hour. To cancel
test mode, unplug and replug the power cord.
F
AUTO FAN
SET POINT
Normal display.
45
46
47
COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS
48
COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS
COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS
50
COOLING ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS
51
HEAT / COOL ONLY ROOM AIR CONDITIONERS: TROUBLESHOOTING TIPS
* NOTE:
52
Heater size on the EQ08M11 is: 1.15 KW.
ELECTRONIC CONTROLS
COOL ONLY
SQ05N10-A, SQ06N10-A, SQ08N10-A, SQ10N10-A
53
ELECTRONIC CONTROLS
COOL WITH ELECTRIC HEAT MODELS
EQ08M11-A
WIRING DIAGRAM
USER INTERFACE
INDOOR
AMBIENT
SENSOR
(WHITE)
COMPRESSOR TERMINAL
ORIENTATION MAY VARY.
REFER TO MARKINGS ON
COMPRESSOR.
OUTDOOR COIL SENSOR (BLUE)
COMPRESSOR
INDOOR COIL SENSOR (GREEN)
RELAY BOARD
SUPPLY CORD
RED
BLUE
C
R
S
OVLD
BLACK
BLACK
RED
BLUE
LN
BLACK
GREEN
FAN
RED
BLACK
TO ECONTROL
BRACKET
WHITE
WHITE
GREEN
RED
ORANGE
C
HER
M
CAPACITOR
WHITE
FAN
MOTOR
TO INNER
WALL /
MOTOR
MOUNT
L1
BROWN
BLUE
HEATER
SCHEMATIC
NEUTRAL
L1 115 VAC
HIGH
1
R
MEDIUM
OVLD
FAN MTR
2
S
LOW
3
COM
HL
NO
COM
CAP
ELECTRIC HEAT
5
FAN
HTR
TF
R
OVLD
C
5
COMPRESSOR
S
HERM
ELECTRONIC CONTROL
COM
CAP
LEGEND
CAP
- CAPACITOR
COMPR - COMPRESSOR
- FAN MOTOR
MTR
- OVERLOAD PROTECTOR
OLP
- USER INTERFACE
UI
- THERMAL FUSE
TF
HL
54
- HEATER LIMIT FUSE
T
- THERMISTER
- COMBINATION TERMINAL
- GROUNDED LEAD SYMBOL
- INSULATOR
PART NO.
92120002
REV.
01
THERMISTORS’ RESISTANCE VALUES
(This Table Applies to All Thermistors)
TEMP
(F)
RESISTENCE
(K Ohms)
0
TEMP
(F)
RESISTENCE
(K Ohms)
56.4452
81
9.2133
5
49.6839
82
9.0275
10
43.8591
83
8.8459
15
38.8118
84
8.6683
20
34.4303
85
8.4947
25
30.6103
86
8.3250
26
29.9068
87
8.1593
27
29.2218
88
7.9973
28
28.5546
89
7.8388
29
27.9048
90
7.6839
30
27.2717
91
7.5324
31
26.6550
92
7.3841
32
26.0540
93
7.2391
33
25.4698
94
7.0973
34
24.9004
95
6.9586
35
24.3454
96
6.8232
36
23.8044
97
6.6906
37
23.2770
98
6.5610
38
22.7628
99
6.4341
39
22.2615
100
6.3100
40
21.7726
101
6.1885
45
19.5068
102
6.0696
50
17.5040
103
5.9533
60
14.1607
104
5.8395
65
12.7641
105
5.7283
66
12.5036
106
5.6195
67
12.2490
107
5.5129
68
12.0000
108
5.4087
69
11.7573
109
5.3065
70
11.5199
110
5.2066
71
11.2879
111
5.1088
72
11.0611
112
5.0130
73
10.8392
113
4.9192
74
10.6223
114
4.8276
75
10.4103
115
4.7378
76
10.2029
116
4.6500
77
10.0000
117
4.5639
78
9.7965
118
4.4796
79
9.5977
119
4.3971
80
9.4033
120
4.3163
55
56
57
HEAT LOAD FORM
The heat load form on the following page may be used by
servicing personnel to determine the heat loss of a conditioned
space and the ambient winter design temperatures in which
the unit will heat the calculated space.
The upper half of the form is for computing the heat loss of
the space to be conditioned. It is necessary only to insert
the proper measurements on the lines provided and multiply
by the given factors, then add this result for the total heat
loss in BTU/Hr./°F.
The BTU/Hr. per °F temperature difference is the 70°F
inside winter designed temperature minus the lowest outdoor
ambient winter temperature of the area where the unit is
installed. This temperature difference is used as the multiplier
when calculating the heat loss.
The graph shows the following:
Left Hand Scale
Unit capacity BTU/Hr. or heat loss
BTU/Hr.
Bottom Scale
Outdoor ambient temperature, base
point.
Heat Pump Model
BTU/Hr. capacity heat pump will
deliver at outdoor temperatures.
Balance Point
Maximum BTU/Hr. heat pump
will deliver at indicated ambient
temperature.
6
58
Following is an example using the heat load form:
A space to be conditioned is part of a house geographically
located in an area where the lowest outdoor ambient winter
temperature is 40°F. The calculated heat loss is 184 BTU/
Hr./°F.
Subtract 40°F (lowest outdoor ambient temperature for the
geographical location) from 70°F (inside design temperature
of the unit) for a difference of 30°F. Multiply 184 by 30 for a
5500 BTU/Hr. total heat loss for the calculated space.
On the graph, plot the base point (70°) and a point on the
40°F line where it intersects with the 5500 BTU/Hr. line on
the left scale. Draw a straight line from the base point 70
through the point plotted at 40°F. This is the total heat loss
line.
Knowing that we have a 5500 BTU/Hr. heat loss, and
we expect that our heat pump will maintain a 70°F inside
temperature at 40°F outdoor ambient, we plot the selected
unit capacity BTU/Hr. of the unit between 35° and 60° on the
graph and draw a straight line between these points. Where
the total heat loss line and the unit capacity line intersect,
read down to the outdoor ambient temperature scale and
¿nd that this unit will deliver the required BTU/Hr. capacity
to approximately 30°F.
HEATING LOAD FORM
FRIEDRICH ROOM UNIT HEAT PUMPS
WALLS: (Linear Feet)
2” Insulation
Average
WINDOWS & DOORS (Area, sq. ft.)
Single Glass:
Double Glass:
BTU/HR PER
°F TEMP. DIFFERENCE
Lin. Ft. x 1.6
Lin. Ft. x 2.6
Sq. Ft. x 1.13
Sq. Ft. x 0.61
INFILTRATION - WINDOWS & DOORS: AVG.
Loose
Lin. Ft. x 1.0
Lin. Ft. x 2.0
CEILING: (Area, Sq. Ft.)
Insulated (6”)
Insulated (2”)
Built-up Roof (2” insulated
Built-up Roof (1/2” insulated)
No Insulation
Sq. Ft. x 0.07
Sq. Ft. x 0.10
Sq. Ft. x 0.10
Sq. Ft. x 0.20
Sq. Ft. x 0.33
FLOOR: (Area, Sq. Ft.)
Above Vented Crawl space
Insulated (1:)
Uninsulated
* Slab on Ground
1” Perimeter insulation
* Based on Linear Feet of outside wall
Sq. Ft. x 0.20
Sq. Ft. x 0.50
Lin. Ft. x 1.70
Lin. Ft. x 1.00
TOTAL HEAT LOSS PER °F BTU/HR/°F
Multiply total BTU/HR/°F X 30 and plot on the graph below at 40°F. Draw a straight line from
the 70 base point thru the point plotted at 40°F. The intersection of this heat loss line with the
unit capacity line represents the winter design heating load.
7
60
4
5
10
2
8
9
12
14
11
17
13
20
15
23
7
24
16
21
Kühl Q-CHASSIS UNIT EXPLODED DIAGRAM
6
3
22
26
25
18
19
1
Kühl-Q Chassis 2012 Parts List
Kühl-Q Units’ 2012 Parts List
33
32
27
29
30
31
28
32
61
Kühl Q-Chassis Service Parts List
Item #
1
1
2
2
3
3
3
4
4
5
5
6
6
6
7
7
7
8
9
10
11
12
13
14
15
15
16
17
18
19
19
20
20
21
21
22
23
24
24
24
25
25
25
26
27
28
29
30
31
32
33
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
COMPONENT
61600523
61600522
61600274
61600275
61718107
61718109
61718112
62601028
62601030
62601024
62601023
61764594
61764601
61764605
61871451
61871468
61871501
61929611
60500500
61923901
61928801
61924300
61990700
61990701
60610604
60610606
61990606
61990500
61627601
61634001
61634000
61597317
61597318
61776903
61776900
61619517
91400402
61028900
61028901
61028903
61626312
61626313
61626314
61638400
61825725
61627212
61627314
62400437
62400726
61680205
61717300
61619405
61715800
60179904
60062720
61080530
61080532
61080594
62601029
61818523
60169120
62601027
03760545
03760568
03760513
61834800
61828202
60217902
01900235
01109003
COMPONENT DESCRIPTION
CONDENSOR COIL
CONDENSOR COIL
EVAPORATOR COIL
EVAPORATOR COIL
KIT COMPR REPLMT 62200118
KIT COMPR REPLMT 62200007
KIT COMPR REPLMT 62200006
KIT USER INTERFACE RPLMNT SVC KUHL SQ
KIT USER INTERFACE RPLMNT SVC KUHL EQ
KIT E-CNTL SERV COOL-EH 3SP KUHL Q
KIT E-CNTL SERV COOL 3SP KUHL Q
OVERLOAD PROTECTOR B400-150-241A FSTB
OVERLOAD PROTECTOR B260-150-241E/MRA12335-12026
OVERLOAD PROTECTOR MRA12230-12008
FAN MOTOR
FAN MOTOR
FAN MOTOR
HEATER 1.15 KW @ 115V (NXT WIRE)
SUPPLY CORD
BRKT CONTROL MNTG XQ
PANEL BLWR FRONT EQ 2003
PANEL, L/S EQ/XQ
BLOWER FRONT, Q 2003
TOP BLOWER FRONT
BLOWER WHEEL
BLOWER WHEEL
SCROLL Q CHASSIS
DECK, EVAP Q CHASSIS
SHROUD 'Q'
CONDENSOR FAN
CONDENSOR FAN
INNERWALL XQ
INNERWALL EQ
FAN MOTOR BRACKET
FAN MOTOR BRACKET
COVER TOP Q-CHASSIS VENTED
COMPRESSOR STUD
COMPRESSOR GROMMET
COMPRESSOR GROMMET
COMPRESSOR GROMMET
BASEPAN Q-CHASSIS
BASEPAN Q-CHASSIS
BASEPAN Q-CHASSIS
DRAIN PAN
ASSY OUTER SHELL KUHL Q REPLMT 2012
CHANNEL SILL SQ
SUPPORT TOP SQ
ASSY KIT DECORATIVE FRONT SVC KUHL Q
ASSY FILTER MESH Q
ASSY CURTAIN AND FRAME Q
GASKET CHASSIS SEAL (UV RES)Q
DECK (EQ08)
COUNTER WEIGHT
CONDENSATE DRAIN VALVE
STRAP CAPACITOR
CAPACITOR 40/5/ MF 370V 2.0
CAPACITOR 45/7.5 MF 370V 2.0
CAPACITOR 55/7.5 MF 370V 2.0
KIT REMOTE CONTROL RPLMNT SVC KUHL
EXPANDED METAL GRILLE PAINTED KUHLQ
SCRIPT FRIEDRICH 2010 "FESTOON"
KIT SENSOR RPLMNT SVC KUHL Q (THERMISTOR SET)
CAPILLARY TUBE
CAPILLARY TUBE
CAPILLARY TUBE
STRAINER .312 COIL
LIQUID DRIER
SEAL FAN MOTOR TO INNER WALL
DC-2 DRAIN KIT
TOUCH UP SPRAY PAINT (12 OZ)
EQ08N11-A
SQ05N10-A
SQ06N10-A
1
1
1
1
1
1
1
SQ08N10-A
1
SQ10N10-A
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
3
1
3
3
1
1
3
1
1
3
1
1
1
1
3
3
3
1
1
3
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Addendum 1
Schedule Table with Energy Saving Values
Pre Programmed Residential Schedule Option 3
Period
Sun
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
Mon
600 Start Time
Cool System Mode
Auto Fan Mode
Low Fan Speed
78
Set Point Cool
70
Set Point Heat
600
Cool
Auto
Low
78
70
Tues
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
600
Cool
Auto
Low
78
70
Wed
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
600
Cool
Auto
Low
78
70
Thur
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
600
Cool
Auto
Low
78
70
Fri
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
600
Cool
Auto
Low
78
70
Sat
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
600
Cool
Auto
Low
78
70
2
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
800
Cool
Auto
Low
85
62
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
800
Cool
Auto
Low
85
62
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
800
Cool
Auto
Low
85
62
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
800
Cool
Auto
Low
85
62
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
800
Cool
Auto
Low
85
62
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
800
Cool
Auto
Low
85
62
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
800
Cool
Auto
Low
85
62
3
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
1800
Cool
Auto
Low
78
70
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
1800
Cool
Auto
Low
78
70
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
1800
Cool
Auto
Low
78
70
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
1800
Cool
Auto
Low
78
70
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
1800
Cool
Auto
Low
78
70
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
1800
Cool
Auto
Low
78
70
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
1800
Cool
Auto
Low
78
70
4
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
2200
Cool
Auto
Low
82
62
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
2200
Cool
Auto
Low
82
62
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
2200
Cool
Auto
Low
82
62
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
2200
Cool
Auto
Low
82
62
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
2200
Cool
Auto
Low
82
62
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
2200
Cool
Auto
Low
82
62
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
2200
Cool
Auto
Low
82
62
700
Cool
Auto
Med
84
62
1800
Cool
Auto
Med
84
62
Mon
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
700
Cool
Auto
Med
75
70
1800
Cool
Auto
Med
84
62
Tues
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
Fri
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
700
Cool
Auto
Med
75
70
1800
Cool
Auto
Med
84
62
Sat
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
700
Cool
Auto
Med
84
62
1800
Cool
Auto
Med
84
62
1
Pre Programmed Commercial Schedule Option 3
Period
1
2
Sun
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
700
Cool
Auto
Med
75
70
1800
Cool
Auto
Med
84
62
Wed
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
700
Cool
Auto
Med
75
70
1800
Cool
Auto
Med
84
62
Thur
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
Start Time
System Mode
Fan Mode
Fan Speed
Set Point Cool
Set Point Heat
700
Cool
Auto
Med
75
70
1800
Cool
Auto
Med
84
62
63
Friedrich Air Conditioning Company
10001 Reunion Place, Suite 500
San Antonio, TX 78216
1-800-541-6645
www.friedrich.com
ROOM AIR CONDITIONERS
LIMITED WARRANTY
FIRST YEAR
ANY PART: If any part supplied by FRIEDRICH fails because of a defect in workmanship or material within twelve months from date of original
purchase, FRIEDRICH will repair the product at no charge, provided room air conditioner is reasonably accessible for service. Any additional labor
cost for removing inaccessible units and/or charges for mileage related to travel by a Service Agency that exceeds 25 miles one way will be the
responsibility of the owner. This remedy is expressly agreed to be the exclusive remedy within twelve months from the date of the original purchase.
SECOND THROUGH FIFTH YEAR
SEALED REFRIGERANT SYSTEM:
because of a defect in workmanship or material within sixty months from date of purchase, FRIEDRICH will pay a labor allowance and parts
necessary to repair the Sealed Refrigeration System; PROVIDED FRIEDRICH will not pay the cost of diagnosis of the problem, removal, freight
charges, and transportation of the air conditioner to and from the Service Agency, and the reinstallation charges associated with repair of the
Sealed Refrigeration System. All such cost will be the sole responsibility of the owner. This remedy is expressly agreed to be the exclusive remedy
within sixty months from the date of the original purchase.
APPLICABILITY AND LIMITATIONS: This warranty is applicable only to units retained within the Fifty States of the U.S.A., District of Columbia,
and Canada. This warranty is not applicable to:
1.
2.
3.
A
Products on which the model and serial numbers have been removed.
Products which have defects or damage which results from improper installation, wiring, electrical current characteristics, or
installed in a corrosive atmosphere, default or delay in performance caused by war, government restrictions or restraints, strikes,
material shortages beyond the control of FRIEDRICH, or acts of God.
OBTAINING WARRANTY PERFORMANCE: Service will be provided by the FRIEDRICH Authorized Dealer or Service Organization in your
area. They are listed at www.friedrich.com. If assistance is required in obtaining warranty performance, contact our customer support team. See
above for contact information.
LIMITATIONS: THIS WARRANTY IS GIVEN IN LIEU OF ALL OTHER WARRANTIES. Anything in the warranty notwithstanding, ANY
IMPLIED WARRANTIES OF FITNESS FOR PARTICULAR PURPOSE AND/OR MERCHANTABILITY SHALL BE LIMITED TO THE DURATION
OF THIS EXPRESS WARRANTY. MANUFACTURER EXPRESSLY DISCLAIMS AND EXCLUDES ANY LIABILITY FOR CONSEQUENTIAL
OR INCIDENTAL DAMAGE FOR BREACH OF ANY EXPRESSED OR IMPLIED WARRANTY.
Performance of Friedrich’s Warranty obligation is limited to one of the following methods:
1. Repair of the unit
2. A refund to the customer for the prorated value of the unit based upon the remaining warranty period of the unit.
3. Providing a replacement unit of equal value
NOTE: Some states do not allow limitations on how long an implied warranty lasts, or do not allow the limitation or exclusion of consequential or
incidental damages, so the foregoing exclusions and limitations may not apply to you.
OTHER:
PROOF OF PURCHASE: Owner must provide proof of purchase in order to receive any warranty related services.
All service calls for explaining the operation of this product will be the sole responsibility of the consumer.
All warranty service must be provided by an Authorized FRIEDRICH Service Agency, unless authorized by FRIEDRICH prior to repairs being made.
(10-08)
64
CUSTOMER SATISFACTION and QUALITY ASSURANCE
Friedrich is a conscientious manufacturer, concerned about customer satisfaction, product quality, and
controlling warranty costs. As an Authorized Service Provider you play a vital role in these areas. By adhering
to the policies and procedures you provide us with vital information on each warranty repair you complete.
This information is used to identify product failure trends, initiate corrective action, and improve product
quality, thereby further reducing warranty expenses while increasing customer satisfaction levels.
FRIEDRICH AUTHORIZED PARTS DEPOTS
AAA Refrigeration Service
1322 24th Street, Suite B
Kenner, Louisiana 70062
504-464-7444
877-813-7444
The Gabbert Company
6868 Ardmore
Houston, Texas 77054
713-747-4110
800-458-4110
Reeve Air Conditioning, Inc.
2501 South Park Road
Hallandale, Florida 33009
954-962-0252
800-962-3383
Alamo Service Company
1450 North Flores Street
San Antonio, Texas 78212
210-227-2450
800-328-2450
Johnstone Supply of Woodside
27-01 Brooklyn Queens Expway
Woodside, New York 11377
718-545-5464
800-431-1143
Valley of the Sun
4710 W. Dewey Drive
Las Vegas, NV 89118
702-547-4900
866-259-8500
A/C Warehouse
670 Avahl Street
Honolulu, Hi 96813
808-545-3084
International Parts Depot
Traco Corp.
380 Paterson Road
Carlstadt, NJ 07072
201-939-1600
TECHNICAL SUPPORT
CONTACT INFORMATION
FRIEDRICH AIR CONDITIONING CO.
10001 Reunion Place, Ste. 500, San Antonio, TX 78216
(210) 546-0500 877-599-5665 x 261 FAX (210) 546-0630
Email: tac@friedrich.com
www.friedrich.com
Printed in the U.S.A.
Kuhl Q-Serv/PartsMan (5-12)
65
FRIEDRICH AIR CONDITIONING CO.
10001 Reunion Place, Ste. 500, San Antonio, TX 78216
P 210-546-0500 | F 210-546-0731
www.friedrich.com
Printed in the U.S.A.
KuhlQ-Serv/PartsMan (5-12)
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