708755-0 FS4BI, PSA4BI 23 Seer SS AC ii.indd

708755-0 FS4BI, PSA4BI 23 Seer SS AC ii.indd
Outdoor Air Conditioner
Installation Instructions
Variable Speed Ultra-High SEER Split System
These units have been designed and tested
for capacity and efficiency in accordance with
ARI standards. These outdoor air conditioning
units are designed for use exclusively with
select NORDYNE G6 gas furnaces and select
NORDYNE B5 air handlers equipped with
dedicated matched indoor coils.
These instructions are primarily intended to
assist qualified individuals experienced in the
proper installation of Heating and Air Conditioning equipment including the iQ DriveTM System.
Local codes may require licensed installation/
service personnel for this type of equipment.
Read all instructions carefully before starting
the installation.
IMPORTANT NOTE
This equipment is one part of a total system
designed for maximum efficiency, adequate
capacity and total comfort. The system must
function as intended. Under no circumstances
any part of the system may be substituted with
other components.
THE iQ DRIVETM SYSTEM
The iQ Drive Air Conditioning System features
fully variable speed compressor technology
and variable speed indoor and outdoor motors.
The system provides variable cooling capacity
as needed modulating over a five degree F
temperature range. It operates near the nominal
rated capacity at the thermostat set point and
modulates as temperature difference between
set point and room temperature changes. The
system may run at additional 18% capacity
to provide rapid cooling and modulates down
to minimum capacity if the room temperature
reaches 2 degree F below set point, then it turns
off if room temperature drops more than 2 degree
F below set point. The system has a built-in
humidity control that will activate a humidifier
equipment (if supplied), and reduces blower
speed if indoor relative humidity is greater than
set point (default set at 60%).
The iQ Drive System consists of an outdoor
unit, indoor unit, controller Thermostat and
connecting lines.
1. The Outdoor Unit:
The outdoor section consists of large heat
exchanger surface, Inverter motor Drive,
Brushless motor type rotary compressor
and an integrated drive brushless fan
motor coupled with a specially designed
fan blade, in addition to refrigerant valves
housed in sturdy attractive chassis.
2. The Indoor Unit:
The matched indoor coil may be a stand
alone cased coil intended to be installed
in NORDYNE G6 Model Gas Furnaces or
may be part of a dedicated NORDYNE B5
Model Air Handler.
The indoor coil is equipped with Electronic
Expansion Valve to precisely control
refrigerant flow over the wide range of
system capacity modulation.
For the stand alone dedicated cased
coil in gas furnace, a Furnace Blower
Conversion Kit is required to allow the
addition of required system components
such as the Integrated Drive Brushless
Indoor Blower Assembly, Interface Board,
upgraded transformer and The Coil Kelvin
Controller.
Consult Installation Instructions provided
with the Indoor Coil and the Furnace Blower
Conversion Kit for details.
For the dedicated Air Handler, the matched
coil and all required components are
included. Consult Installation Instructions
provided with the Air Handler Unit for
details.
3. System Controller Thermostat:
The system controller is the master
component that communicates with
and controls the inverter driven system
components.
The Inverter in the outdoor unit receives
signals from compressor, heat exchanger,
fan motor and outdoor ambient which
are communicated to the controller
via connections to the Indoor Interface
Board. The controller responds back with
appropriate messages for each device
operation command. If no message is
received for 10 seconds, the device will
stop. The controller communicates with
the indoor section via the Indoor Interface
Board which is powered by 24 VAC from
transformer in the furnace or air handler.
Transformer in the gas furnace MUST be
replaced with the one supplied in the gas
furnace blower conversion kit.
1. GENERAL INFORMATION
Read the following instructions completely
before performing the installation.
CAUTION:
This unit is charged with R-410A
refrigerant. DO NOT under any
circumstances use any other
refrigerant besides R-410A in this
unit. Use of another refrigerant will
damage this unit.
Condensing Unit Section — Unit is factory
charged with refrigerant charge adequate to
operate the outdoor section with the indoor
matched coil or air handler, and 15 feet of
refrigeration line.
NOTE: DO NOT USE ANY PORTION OF THE
REFRIGERANT CHARGE FOR PURGING OR
LEAK TESTING.
Matching coils and Air Handlers are shipped
with a small pressurized holding charge to
keep contaminants out. To release the pressure,
read the indoor section installation instructions
carefully.
Liquid and Suction Lines — Refrigerant grade
copper tubing should be used when installing
the system. Suction line tubing should be fully
insulated.
Field Connections for Electrical Power
Supply — All wiring must comply with latest
version of the “National Electrical Code” (ANSI/
2
NFPA 70) and electrical conductors and circuit
protection must be in compliance with information
listed on the outdoor unit data label.
2. SAFETY CONSIDERATIONS
Pressures within the System — Split System
Air Conditioning equipment contains liquid and
gaseous refrigerant under pressure. Installation
and servicing of this equipment should be performed by qualified, trained personnel thoroughly
familiar with this type of equipment. Under no
circumstances should the homeowner attempt
to install and/or service the equipment.
Labels, Tags, Precautions — When working
with this equipment, follow all precautions in the
literature, on tags, and on labels provided with
the equipment. Read and thoroughly understand
the instructions provided with the equipment prior
to performing the installation and operational
checkout of the equipment.
Brazing Operations — Installation of equipment
requires brazing operations. Safety codes must
be complied with. Safety equipment (e.g. safety
glasses, work gloves, fire extinguisher, etc.) must
be used when performing brazing operations.
WARNING:
Ensure all electrical power to the unit
is OFF prior to installing or servicing
the equipment. Failure to do so may
cause personal injury or death.
3. SITE PREPARATION
Unpacking Equipment — Remove the
cardboard carton and user’s manual from the
equipment. Take care not to damage the tubing
connections when removing the carton.
Inspect for Damage — Inspect the equipment
for damage prior to installing the equipment at
the job site.
Preferred Location of the Outdoor Unit —
Conduct a survey of the job site to determine the
optimum location for installing the outdoor unit.
Overhead obstructions, poorly ventilated areas
and areas subject to accumulation of debris
should be avoided. The outdoor unit must be
installed in such a manner that airflow through
the chassis is not obstructed and that unit can
be serviced.
Facility Prerequisites — Electrical power
must be supplied to the equipment. Electrical
power supplied must be adequate for proper
operation of the equipment. The system must
be wired and provided with circuit protection in
accordance with local building codes and the
National Electrical Code.
Minimum Circuit Ampacity — Electrical wiring to the equipment must be compatible and in
compliance with the minimum circuit ampacity
listed on the outdoor unit data label.
Maximum Fuse/ Circuit Breaker Size — Circuit
protection for the outdoor unit must be compatible with the maximum fuse/ circuit breaker size
listed on the outdoor unit data label.
4. INSTALLING THE OUTDOOR UNIT
Slab Mount — The site selected for a slab
mount installation requires a stable foundation
not subject to erosion. The slab should be level
and anchored (if necessary) prior to placing the
unit on the slab.
Cantilever Mount — The cantilever mount
should be designed with adequate safety factor
to support the weight of the unit, and for loads
subjected to the mount during operation. Installed
equipment should be adequately secured to the
cantilever mount and leveled prior to operation
of the equipment.
Roof Mount — The method of mounting
should be designed so as not to overload roof
structures nor transmit noise to the interior of
the structure.
Refrigerant and electrical lines should be routed
through suitably waterproofed openings to prevent leaking into structure.
5. INSTALLING THE INDOOR UNIT
The indoor section should be installed before
proceeding with routing of the refrigerant piping.
Consult the installation instructions of the indoor
unit (i.e.; air handler, indoor coil and furnace) for
details regarding installation.
6. CONNECTING REFRIGERANT
TUBING
CAUTION:
This system utilizes R-410A refrigerant
with PVE oil. When servicing, cover
or seal openings to minimize the
exposure of the refrigerant system
to air and prevent accumulation of
moisture and other contaminants.
General — Once the outdoor and indoor unit
placement has been determined, route refrigerant tubing between them in accordance with
sound installation practices. Refrigerant tubing
should be routed in a manner that minimizes the
length of tubing and the number of bends in the
tubing. Refrigerant tubing should be supported
in a manner that the tubing will not vibrate or
abrade during system operation. Tubing should
be kept clean of foreign debris during installation. Refrigerant lines that exceed 75 ft in
length and 20 ft in vertical elevation difference
are not recommended. The maximum interconnecting refrigerant line length is 100 feet,
and the maximum vertical elevation difference
between the indoor and outdoor sections shall
not exceed 50 feet.
Filter Dryer Installation—A liquid line filter dryer
is supplied with unit and must be installed in the
liquid line of the system. If the installation replaces
a system with a filter dryer already present in
the liquid line, the filter dryer must be replaced
with the one supplied with the unit.
7. MAKING ELECTRICAL
CONNECTIONS
WARNING:
Turn off all electrical power at main
circuit box before wiring electrical
power to the outdoor unit. Failure to
comply may cause severe personnel
injury or death.
Wiring Diagram — A wiring diagram/ schematic
is located on the inside cover of the electrical box
of the outdoor unit. The installer should become
familiar with the wiring diagram/ schematic before
3
making any electrical connections to the outdoor
unit. Refer to wiring diagrams in this literature for
wiring of system components.
Outdoor Unit Connections — The outdoor unit
requires both power and control circuit electrical
connections. Refer to the unit wiring diagram/
schematic for identification and location of outdoor field wiring interfaces.
Control Circuit Wiring — The outdoor unit is
designed to operate from a 24 VAC Class II
control circuit. Control circuit wiring must comply
with the latest version of the “National Electrical
Code” (ANSI/NFPA 70) and with applicable local
codes having jurisdiction.
Controller Thermostat Connections — Connections to controller thermostat should be
made in accordance with the instructions supplied with unit, and with the instructions supplied
with the indoor equipment. System requires
the use of shielded cable. Cable must be
grounded only at the indoor section.
Electrical Power Wiring — Electrical power
wiring shall comply with the current provisions
of the National Electrical Code (ANSI/NFPA 70)
and with applicable local codes having jurisdiction. Use of shielded (metal lined sealtite or
rigid ) conduit is required. Electrical conductors
shall have minimum circuit ampacity in compliance with the outdoor unit rating label. The
facility shall employ electrical circuit protection
at a current rating no greater than that indicated
on the outdoor unit rating label.
Disconnect Switch — An electrically compatible
disconnect switch must be within line of sight of
the outdoor unit. This switch shall be capable of
electrically de-energizing the outdoor unit.
8. STARTUP AND CHECKOUT
WARNING:
from obstructions and debris, and all equipment
access/control panel cover is in place.
Indoor Unit — Consult the installation instructions of the indoor unit (i.e.; air handler, indoor
coil and furnace) for details regarding installation.
Ensure wiring is secure and correct.
Air Filters — Ensure air filters are clean and in
place prior to operating the equipment.
Ensure that the unit has been properly and
securely grounded and that power supply connections have been made at both the facility
power interface and outdoor unit.
Controller Thermostat — Ensure that all low
voltage wiring from the thermostat to the Indoor
section interface board is secure and correct
using 4-wires thermostat shielded cable. Cable
MUST be grounded at the indoor section only.
Using extreme caution, apply power to the system and inspect the wiring for evidence of open,
shorted, and/or improperly wired circuits.
Controller Thermostat screen will be lit and
calibration of indoor blower assembly will begin.
Initial screen will display indoor and outdoor
temperatures and installer will be able to select
functions and program all modes of operation.
NOTE: The Controller Thermostat is designed
to display information screens for use by the
installer and homeowner.
At initial installation, from “OFF” screen, press
the Up and Down buttons simultaneously for
5-10 seconds to display the “Installer Settings
Menu Screen”. This screen prompts the installer
to input system configuration, unit size, furnace
information, accessories installed, desired settings in cooling and heating, and humidity setting
if different from default setting. Installer may also
input recommended service schedule and dealer/
contractor information for future use.
Ensure electrical power to the unit is
off prior to performing the following
steps. Failure to do so may cause
personal injury or death.
The controller screens display all pertinent
system information in normal operation. When
necessary, important messages may be sequenced along the top line to indicate conditions
that need attention.
Outdoor Unit — Ensure the outdoor coil, the
inverter heat sink and the top of the unit are free
The controller is also designed to function as an
important service and troubleshooting tool.
4
INSTALLER SETTINGS SCREEN:
1-
2-
34-
5-
6-
7-
8-
910-
From “Installer Settings”, select “Model
Configuration”. Screen will display
“single stage” or “multi stage”.
Select appropriate option. Screen will
display “Input rate” and “temp rise” for
the installed furnace.
Input data from furnace installed.
Press “select button” following each
selection or the up and down arrows
to access displayed options. Press
“Previous arrow” to scroll between
screens.
From “Installer Settings”, select “Accessories” option. Screen will display accessories. Input pertinent selections
Each accessory selected will be
followed with additional screens for
scheduling maintenance and service.
Input appropriate recommended service schedules.
From “Installer Settings”, select “Input
Dealer Info” option. Screen will display
pertinent selections. Follow screen
prompts and save “Completed Dealer
Info Screen”.
From “Installer Settings”, select “Humidity Settings” option. Screen will
display available selections. Select
from “Humidify only”, “Dehumidify
only”, “Both” or “None”.
From “Installer Settings”, select “Restore Factory Defaults” if so desired.
From “Installer Settings”, select “Charging Mode” to run system at nominal setting for proper charging conditions.
MAIN SCREEN:
The iQ Drive controller thermostat main screen
displays system normal operating information.
It displays Outdoor and Indoor temperatures,
Set points in cooling and heating, humidity and
mode of operation for system and indoor fan.
The top line will normally display date and time,
but if exceptional conditions exist it is used to
display the condition (for example, HOLD UNTIL
or PERMANENT HOLD). Alerts or maintenance
settings are also displayed on the top line. Bottom
line contains selectable menus:
RH:
Displays the relative humidity and allows selections of humidity operation points.
TEMP:
Select this option to temporarily override program
setting until next program interval is activated.
This will change to CANCEL HOLD when a
hold is active, RESET ALARM when an alarm
or fault is active.
MODE:
Select this option to choose operating mode
(Cool, Heat, Auto or Off ).
FAN:
Select this option to set desired indoor blower
operation mode (Auto, Manual [On] or Programmed). If AUTO is selected, the thermostat
will decide when the fan should be On based
on the operation of heating and cooling. If “On”
is selected, the next screen sets the speed settings. There are five available speed settings. If
programmed fan is selected, the fan will be ON
or AUTO based on the setting in the program
screen.
MENU:
Select “MENU” option to input the following:
Set Date & Time, Hold Temp info, Program of
Operation, Fan, Mode, Settings and Security
Lockout.
Note: “Fan” and “Mode” may be selected from
Main Screen directly.
1- SET DATE AND TIME: Follow prompted
screens after each selection is made.
2- HOLD: Select from “Vacation” or “Per
manent”
2A- From “Vacation Hold Screen” set
desired “Hold temperatures for “Heat”
and/or “Cool”.
2B- The following screen prompts the date
and time entry for the desired hold.
Follow same steps for “Permanent
Hold”.
3- PROGRAM: Select to set weekdays,
weekends, every day or individual days
programming. The prompted screens
allow four settings per day. Input desired
program and save.
4- FAN: Select from “Auto”, “On” or “Programmed Fan”. The “Programmed
Fan Settings” allows fan to run as
programmed in step 3.
5- MODE: Select from “OFF”, “AUTO”,
“COOL” or “HEAT”.
6- SETTINGS: Use this screen to scroll
through options such as:
6A- SCREEN SETTINGS: Set preferred
screen settings such as “Temp scale”,
“Clock setting”, “Language”, “Contrast”
and “Backlight On Time”.
5
6B- OFFSET: Set temperature offsets,
humidity offset, heat anticipator and
heat differential.
6C- CYCLES PER HOUR: Set the
maximum allowed heating cycles per
hour.
6D- AUTO CHANGEOVER: Select “Auto or
Manual Change” and select the “Auto
Changeover Time” to input desired time
interval between cooling and heating
changeover.
6E- PROGRAM SETTINGS: Select “Smart
Recovery”, “Events per Day” and “Intermittent Fan”.
Verify that the indoor fan calibration is performed
and that system starts running.
When Smart recovery is selected, the
controller adjusts operating span to
match set program. Events per day
selection define number of daily air
changes required based on residential
or business choices.
If system has been configured, as a multistage,
and heating demand is greater than stage 1 and
stage 2 differentials, both stages will remain
active until heating demand is satisfied.
When Intermittent Fan is selected, the
fan may be programmed to turn on for
selected periods of time at selected
time intervals if no call for cooling or
heating is present. Follow instructions
of each option to set program.
6F- SERVICE INFORMATION:This screen
lists components status and faults if
any. Scroll up and down to obtain “Fault
Status” showing active fault and last
5 faults, “Compressor Status”, “Outdoor fan Status”, “Indoor fan Status”,
“Temperature Status” and option to
“Clear Fault History”. The screen also
provides CALIBRATION DATA showing
constants downloaded from indoor fan
motor, and COMMUNICATION DATA
showing real time view of the communication between system components.
7.
SECURITY LOCKOUT: Select from
“Temp Adjust Only” or “Total Keypad
Lockout” options. A PIN number may be
input. This PIN number will be needed
for future system settings and adjustments.
9. OPERATING INSTRUCTIONS
To Operate System in Cooling:
From MODE Screen, select AUTO or COOL.
From Main Screen use the down arrow to set
cooling temperature below room temperature.
6
To set system operation, select MENU from the
Main Screen and follow the instructions listed
under previous section.
To Operate Furnace in Heating:
From MODE Screen, select AUTO or HEAT.
From Main Screen use the up arrow to set
heating temperature above room temperature.
When heating demand is greater than stage 1
differential, the first stage is energized and indoor
fan will start after delay is satisfied.
Humidity Control:
Humidification: When relative humidity is below
set point, the “H” terminal on interface board will
be energized and a humidifier (if present) will start
a humidification process. Board will deenergize
“H” if RH is 2% above set point.
Dehumidification: When relative humidity is
above set point, and measured temperature is
within 1 degree of set point and system is cooling,
the indoor fan speed will slow gradually until set
RH is reached then stop slowing. The fan will
resume normal speed if coil temperature drops
or after being in this mode for 10 minutes. Normal
operation will begin if measured temperature is
2 degrees away from set temperature.
To Operate Indoor Blower Only:
Select FAN from MAIN menu screen, then select
ON for continuous blower operation. In the next
screen select desired speed.
NOTE: The controller is programmed to start
a Fan Calibration occurrence every week and
every time the power is lost. This function starts
the indoor blower and calibrates air volume to
motor speed.
To Shut Off the System:
The system is designed to continuously operate
within a wide range of speeds to provide ultimate
comfort, adequate matched to load capacity and
maximum efficiency. It will turn off automatically
if required. However if there is a need to shut off
the system, select OFF from Operating Mode
Screen.
10. SYSTEM PROTECTION
MEASURES
The Inverter Driver is designed to provide a full
scale of protection measures against conditions
that may cause compressor and/or other
components failure. When a protection function
is triggered, the Inverter trips and communicates
the fault description to the controller which will
display an error code or component fault status.To
release the trip, correct the fault cause, turn power
off, and then turn it on after few seconds.
Protection Functions:
1- Low Voltage Protection: If the voltage
becomes lower than design minimum,
the output of inverter is interrupted.
2- Over Voltage Protection: Inverter will
trip if voltage becomes higher than design
maximum.
3- Over Current Protection: Inverter will
trip if the converter output current is
exceeded due to load short circuit or
ground fault.
4- Over Heat Protection: Inverter has
a heat sink that rids it from excessive
temperatures. If temperature sensor
exceeds 194 Fahrenheit, Inverter will
trip.
5- Over Speed Protection: Inverter will
trip if compressor speed is increased to
1.5 times the allowed rated speed.
6- Abnormal Rotation Protection: Inverter
will trip if abnormal rotation of compressor
is detected due to improper wiring.
7- Sensors Error Protection: The outdoor air temperature sensor controls
maximum compressor speed allowed
for safe operation and the compressor
discharge temperature sensor monitor
maximum allowed compressor temperature. Inverter will trip if these sensors are
open or shorted.
8- Microprocessor Error Protection: If
abnormality of the CPU is detected,
the inverter will trip. Abnormality may
be caused by external electromagnetic
noise.
9- Communication Error Protection:
Inverter will trip if communication with
the main controller fails.
NOTE: Tripping of the Inverter is input into the
controller memory up to 5 times occurrences.
Other System Protections:
Low Pressure Switch — A low pressure switch
is factory installed and located in the suction line
internal to the outdoor unit.The switch is designed
to protect the compressor from a loss of charge.
Under normal conditions, the switch is closed.
If the suction pressure falls below 35 psig, then
the switch will open and its signal to the inverter
will open. The inverter will then send signal to
the controller to turn unit off and displays fault
message. The switch will close again once the
suction pressure increases to 60 psig.
High Pressure Switch — A high pressure
switch is factory installed and located in the
compressor discharge line internal to the outdoor
unit. The switch is designed to de-energize the
unit when excessive pressure occurs due to
abnormal conditions. Under normal conditions,
the switch is closed. If the discharge pressure
rises above 575 psig, then the switch will open
and de-energize the outdoor unit. The switch
will close again once the discharge pressure
decreases below 460 psig.
Diagnostics and Troubleshooting:
The controller Thermostat Unit is designed to
provide service personnel with detailed description of faults that may cause system malfunction,
as well as messages indicating maintenance
required.
Only qualified service personnel shall get into
“Service Information Menu” screen to define the
fault and make the appropriate correction.
“SERVICE NEEDED” Display:
The controller will change screen color to RED
and displays “SERVICE NEEDED”, System
information and Fault detected in the Service
needed menu screen.
If Compressor error is detected, it displays
“COMP ERROR” followed by code number
(see below).
7
Code No.
Fault
Indication
Possible
Cause
Outdoor temp
thermistor shorted
or disconnected.
1
2
Sensor error
Under voltage
Discharge temp
thermistor shorted
or disconnected.
Display of
inverter panel
E.-A1
Check item
1- Check thermistor resistance at Out of range
normal temperature (60~95°F)
10~25k.ohms,
(1-2pin of CN7)
Replace thermistor.
2- Reset the power supply and
run.
E.-A2
E.-A3
Low voltage of
inverter
E.-LV
2- Reset the power supply
and run
1- Check supply voltage
1- Check supply voltage
5
Over voltage
Over speed
High voltage of
inverter
Compressor over
speed
O.V.
O.S.
Display E-A2,
Replace inverter
1- Check thermistor resistance at Out of range
normal temperature (60~95°F)
30~80k.ohms,
(1-2pin of CN9)
Replace thermistor.
2- Reset to the rated voltage
and run
3
Display E-A1,
Replace inverter
1- Check thermistor resistance at Out of range
normal temperature (60~95°F)
30~80k.ohms,
(1-2pin of CN8)
Replace thermistor.
2- Reset the power supply
and run
IPM temp thermistor
shorted or
disconnected.
Finding and
correction
Display E-A3,
Replace inverter.
Equal or over 187V
AC, possible power
interruption
Less than 187VAC,
Check power supply.
Display E-LV, Replace
inverter.
Under 253VAC,
possible strong wind
Over 253VAC, check
power supply.
2- Reset to the rated voltage
and run
Display O.V., Replace
inverter/fan motor
Reset to the rated voltage and
run
Display O.S., Replace
inverter.
Out of range
1- Check compressor resistance 0.3~1.ohms,
Replace compressor.
Over current of
power module
(hardware)
8
Display O.C.,
Replace inverter.
Reset power supply and run
Display E.ROT.,
Check wiring.
Replace inverter and run
Display O.C.,
Replace compressor.
Over current
Over current of
power module
(software)
9
2- Disconnect comp wires
O.C.
Over heat
Over heat of power
module
O.C.-C.
O.H.
Out of range
1- Check compressor resistance 0.3~1.ohms,
Replace compressor.
Display O.C.,
2- Disconnect comp wires
Replace inverter.
Reset power supply and run
Display E.ROT.,
Check wiring.
Replace inverter and run
Display O.C., Replace
compressor.
1- Check outdoor temperature
Equal or above 125F,
unit not allowed to
run.
2- Check the screws of power
module
Secure loose screws
3- Check IPM heat sink fins
Clear obstructions
4- Check fan rotation
Secure fan to motor
shaft if screw is loose.
5- Check IPM thermistor
Out of range
resistance at normal temperature 30~80k.ohms,
(60~95°F)
(1-2pin of CN9) Replace thermistor.
6- Reset power supply and run
Table 1. Interpreting the Diagnostic Codes
8
Display O.H., Replace
inverter.
Code No.
Fault
Indication
Possible
Cause
Display of
inverter panel
Check item
1- Check comp wiring
connection (TA4,TA5,TA6)
Abnormal comp
rotation
10
E.ROT.
Rotation error
Abnormal rotation of
outdoor FM
2- Reset power supply and run
3- Replace inverter and run
1- Check connection of FM
wiring (CN3)
E.-FAn
2- Reset power supply and run
1- Check connection of
communication cable
(CN11,CONTROLLER)
20
Communication
error
Communication
error at indoor or
outdoor
E.-485
2- Check SW2 position
91
System Parameter
error
EEPROM data
failure
CAU trip
System Error
99
E.-DS.
CPU Error
Display E.ROT.,
Replace compressor.
Secure connection
Display E.-Fan,
Replace inverter/ fan
motor
Verify and secure
loose Connections
Set SW2 to ON (lower
side)
4- Replace inverter and run
1- Check the setting of DSW
tonnage
2- Reset the power supply
and run
Reset power supply and run
Display E.-PR.,
Replace inverter.
Reset power supply and run
Display CAU.,
Replace inverter.
Reset power supply and run
Display E.-CT,
Replace inverter.
Reset power supply and run
Display Err., Replace
inverter.
E.-PR.
CAU.
E.-CT
CPU error
Secure loose wiring/
terminals.
Display E.ROT.,
Replace inverter.
Display E.-485,
Replace inverter.
Display E.-485,
Replace controller or
Indoor fan motor.
Set the DSW switch to
match tonnage.
Display E.-DS,
Replace inverter.
3- Reset power supply and run
DIP-SW switching
error
Finding and
correction
Err.
Table 1. Interpreting the Diagnostic Codes (Continued)
If Blower error is detected, it displays “BLOWER
ERROR” followed by code number (see below).
Other possible errors displayed are:
Too Hot Out
Comp Overload
Low Gas Pressure
COMM Error 10, for indoor motor
COMM Error 20, for outdoor motor
COMM Error 30, for Furnace
An Inverter Keypad diagnosis tool may be used to
help service the outdoor unit at site. See column
“Display of Inverter panel” for fault codes.
Unit Tonnage
2 Ton
3 Ton
4 Ton
System Charge
R-410A Oz.
160
168
188
Table 1 describes possible errors and corrective
measures.
Adjustment of Refrigerant Charge:
CAUTION:
Split system air conditioner equipment
contains liquid and gaseous refrigerant
under pressure. Adjustment of
refrigerant charge should only be
done by qualified, trained personnel
thoroughly familiar with this type of
equipment. Under no circumstances
should the homeowner attempt to
install and/or service this equipment.
Failure to comply with this warning
could result in equipment damage,
personal injury or death.
Table 2. System Charge
9
NOTE: The unit MUST be charged at nominal
speed setting. See “Installer Settings Screen”
and select “Charging Mode” to run system at
nominal speed.
4.
Procedure for charging outdoor unit at outdoor temperatures above 65 F:
5.
1.
2.
3.
With the system at nominal speed
steady state, measure the liquid refrigerant pressure in psig at the service
valve.
Measure the liquid refrigerant temperature in Fahrenheit at the service
valve.
For the temperature measured, determine the liquid refrigerant pressure
from the appropriate charging chart
below.
If the pressure measured in step 1 is
less than the required liquid refrigerant
pressure determined in step 4, then
there is too little charge in the system.
Add refrigerant and repeat steps 1
through 3 until the system is correctly
charged.
If the pressure measured in step 1 is
greater than the required liquid refrigerant pressure determined in step 4,
then there is too much charge in the
system. Remove refrigerant and repeat
steps 1 through 3 until the system is
correctly charged.
Refrigerant Charging Charts
For Cooling Mode of Operation
550
525
500
Remove refrigerant when above the curve
Liquid Pressure (psig)
475
450
425
400
375
350
325
300
275
Add refrigerant when below the curve
250
225
200
60 65
70 75
80 85 90 95 100 105 110 115 120 125 130
Liquid Temperature (F)
2,3, and 4 Ton iQ Drive Charging Chart
10
“TO U”
Legend
YELLOW
“TO V”
RED
BLACK
CONTACTOR
HPS
BLACK
L2
T2
TA7
TA8
BLACK
4
CN3
3
5
6
7
BLACK
INVERTER
2
OUTDOOR POWER
SUPPLY
L1
T1
1
THRU TORIODAL
RING
TA6 TA5 TA4
YELLOW
BLACK
S (ON
GASKET)
BLACK
4
3
2
CN8
CN7
CN6
TA2
FUSE
FUSE
TA3
2
1
4
3
2
1
1
1
2
3
4
5
6
7
8
9
KELVIN
CONTROLLER
20 21 22 23 24
10 11 12
CABLE
CABLE
ESX COIL
PRESSURE
TRANSDUCER
COIL
THERMISTOR
24 VAC
R
INTERFACE
BOARD
RED
BLACK
TEMP.
SENSOR
SUCTION
(I.D. COIL)
THRU CORE
RING
TEMP
SENSOR
COIL
CABLE
BLACK
BLACK
THRU TORIODAL RING
TO L.V. BARRIER
COMP DISCH TEMP
THERMISTOR
BLACK
GREEN
WHITE
RED
OUTDOOR TEMP
THERMISTOR
LPS
BLACK
THRU CORE
RING
BLACK
YELLOW
TA1
GND
DXDX+
CN11
5
GRD.
6
BLACK
YELLOW
MARK
STAMP
Field Wiring
Factory Wiring:
Low Voltage
High Voltage
R (ON
GASKET)
GREEN
YELLOW
BLACK
O.D.
FAN MOTOR
TWIN
REACTOR
YELLOW
I.D. BLOWER
FOR FUTURE USE
GREEN
GND
H
WHITE
RED
YELLOW
THRU CORE
RING
PLUG
CONNECTOR
DX-
P3
O.D. UNIT
DX+
R
DXGRD
DX+
C W2 W
THERMOSTAT
BLUE
BROWN
BROWN
RED
BLUE
YELLOW
WHITE
C (ON GASKET)
WHITE
GREEN
BLACK
RED
CONTROL
CABLE
NOISE
FILTER
GREEN
MOTOR
BLACK
“TO W”
GREEN
CABLE
GRAY
BLACK
RED
YELLOW
ORANGE
WHITE
WHITE
WHITE
BLACK
BLACK
GREEN
RED
BLACK
ORANGE
BLUE
YELLOW
6
5
4
9
8
7
GREEN
POWER
CABLE
R
3
2
1
6
5
4
Neutrals
1
2
3
W
G
Y
C
WHITE W/BLACK STRIPE
3 Amp Fuse
Unused Motor
Leads
24 V
COM
24V
WHITE
L
V
0
Y2
Y1
G
C
W2
RH
R
W1
H
120V
TWIN
GD
A
B
GD
OD
ID
CONTROLLER
THERMOSTAT
BLACK W/ WHITE STRIPE
*TERMINALS ON COMPRESSOR
ARE NOT MARKED. USE RELATIVE
LOCATION OF TERMINALS TO THE
MARK STAMP TO IDENTIFY PROPER
MARKING.
XFMR
EAC
L1
COOL
HEAT
M3
M2
M1
HUM
EAC HUM
Outdoor Unit/Furnace Wiring Diagram
11
BLACK
Outdoor Unit/Air Handler Wiring Diagram
INSTALLER: PLEASE LEAVE THESE
INSTALLATION INSTRUCTIONS
WITH THE HOMEOWNER
R (ON
GASKET)
Legend
YELLOW
RED
BLACK
CONTACTOR
HPS
L2
T2
BLACK
4
CN3
3
5
6
INVERTER
OUTDOOR POWER
SUPPLY
L1
T1
TA7
TA8
BLACK
BLACK
YELLOW
2
THRU TORIODAL RING
TO L.V. BARRIER
YELLOW
“TO U”
Field Wiring
Factory Wiring:
Low Voltage
High Voltage
“TO V”
BLACK
1
7
4
3
2
CN8
CN7
CN6
TA2
FUSE
FUSE
TA3
TA1
GND
DXDX+
CN11
5
GRD.
6
2
1
4
3
2
1
1
BLACK
BLACK
THRU TORIODAL RING
TO L.V. BARRIER
1
BLACK
2
3
4
5
6
8
RED
GRAY
7
9
CABLE
CABLE
10 11 12
WHITE
GREEN
BLACK
BLACK
KELVIN
CONTROLLER
20 21 22 23 24
COMP DISCH TEMP
THERMISTOR
BLACK
GREEN
WHITE
RED
OUTDOOR TEMP
THERMISTOR
BLACK
THRU CORE
RING
YELLOW
TA6 TA5 TA4
BLACK
S (ON
GASKET)
GREEN
YELLOW
ORANGE
MARK
STAMP
GRAY
BLACK
RED
YELLOW
CABLE
ESX
COIL
PRESSURE
TRANSDUCER
TEMP.
SENS.
SUC.
THRU
CORE
RING
RED
COIL
THERMISTOR
R
C W2 W
INTERFACE
BOARD
24 VAC
BLACK
TEMP
SENSOR
COIL CABLE
TWIN
LPS
H
P3
RED
GRAY
WHITE
BLUE
RED
YELLOW
WHITE
GREEN
24V
TRANSFORMER
208V/240V
WHITE
BLACK
L
V
0
Y2
Y1
G
C
W2
RH
R
W1
H
INDOOR
POWER
SUPPLY
GD
A
B
GD
OD
ID
CONTROLLER
THERMOSTAT
GRAY
RED
POWER FILTER
PLUG
POWER
CABLE CONNECTOR
PLUG
CONNECTOR
THRU
CORE
RING
I.D.
MOTOR
CONTROL
CABLE
R
DX+
DXGND
DX+
DXGND
DX+
DXGND
BLACK
YELLOW
WHITE
REACTOR
GREEN
O.D.
FAN MOTOR
GREEN
“TO W” C (ON GASKET)
L2
CABLE
BLACK
Y1
W2
W1
O
Y/Y2
G
R
C
P3
L1
GREEN
RED
BLACK
ORANGE
BLUE
YELLOW
BLACK
1
CUT WIRES TO
REMOVE PLUG
HOUSING WHEN
HEATER KIT IS
NOT INSTALLED.
2
3
4
5
6
7
HEATER PLUG
KIT
L1
*TERMINALS ON COMPRESSOR
ARE NOT MARKED. USE RELATIVE
LOCATION OF TERMINALS TO THE
MARK STAMP TO IDENTIFY PROPER
MARKING.
RED
L2
24 VAC
WHITE
L2 COM
COM
7087550
XFMR
¢708755G¤
Specifications and illustrations subject to change
without notice and without incurring obligations.
Printed in U.S.A. (04/07)
7087550 (Replaces 708592A)
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