9508_ SER_MSC-09_12_HRFN1-QD2E _V1.1_

9508_ SER_MSC-09_12_HRFN1-QD2E _V1.1_
SERVICE MANUAL
MIDEA AIR CONDITIONER
3D DC INVERTER
SPLIT WALL-MOUNTED TYPE
MSC-09HRFN1-QD2E
MSC-12HRFN1-QD2E
V1.1
May, 2010
CONTENTS
1. Precaution............................................................................................................................... 1
1.1
Safety Precaution .................................................................................................................. 1
1.2 Warning .............................................................................................................................. 1
2. Function .................................................................................................................................. 4
3. Dimension ............................................................................................................................... 6
3.1
Indoor Unit .......................................................................................................................... 6
3.2 Outdoor Unit ........................................................................................................................ 7
4. Specification ........................................................................................................................... 8
5. Refrigerant cycle diagram ...................................................................................................... 9
6. Wiring diagram ..................................................................................................................... 10
6.1
Indoor Unit ......................................................................................................................... 10
6.2 Outdoor Unit ....................................................................................................................... 10
7. Installation details................................................................................................................ 12
7.1 Wrench torque sheet for installation........................................................................................ 12
7.2 Connecting the cables ........................................................................................................... 12
7.3 Pipe length and the elevation ................................................................................................. 12
7.4 Air purging of the piping and indoor unit.................................................................................. 12
7.5 Pumping down (Re-installation) .............................................................................................. 14
7.6 Re-air purging (Re-installation) ............................................................................................... 15
7.7 Balance refrigerant of the 2-way, 3-way valves ......................................................................... 16
7.8 Evacuation .......................................................................................................................... 17
7.9 Gas charging ....................................................................................................................... 18
8. Operation characteristics ..................................................................................................... 19
8.1
MSC-09HRFN1-QD2E ............................................................................................................ 19
8.2
MSC-12HRFN1-QD2E ............................................................................................................ 20
9. Electronic function................................................................................................................ 21
9.1 Abbreviation........................................................................................................................ 21
9.2 Display function ................................................................................................................... 21
9.3 Protection ........................................................................................................................... 21
9.4
Fan-Only Mode .................................................................................................................... 23
9.5 Cooling Mode ...................................................................................................................... 23
9.6 Drying mode ....................................................................................................................... 24
9.7 Heating mode...................................................................................................................... 24
9.8 Auto mode function .............................................................................................................. 28
9.9 Forced operation function...................................................................................................... 28
9.10 Action of 4-way valve.......................................................................................................... 28
9.11 Action of Electronic Control Valve…………………………………………………………………………..29
9.12 Action of outdoor fan…………………………………………………………………………………………30
9.13 Oil return function .............................................................................................................. 31
9.14 Timer function ................................................................................................................... 31
9.15 Sleep function mode ........................................................................................................... 32
9.16 Auto-Restart function .......................................................................................................... 32
9.17 Ionizer function(optional) .................................................................................................... 32
9.18 Outdoor heating cable ....................................................................................................... 32
10. Troubleshooting.................................................................................................................. 33
10.1 Indoor Unit Error Display ..................................................................................................... 35
10.2 Diagnosis and Solution ........................................................................................................ 36
10.3 Key parts checking. ............................................................................................................ 39
1. Precaution
1.1
Safety Precaution
There is risk of fire, electric shock, explosion,
or injury.
n To prevent injury to the user or other
n Do not install the product on a
people and property damage, the following
defective installation stand.
instructions must be followed.
It may cause injury, accident, or damage to
the product.
n Be sure the installation area does not
n Incorrect operation due to ignoring
instruction will cause harm or damage.
n Before service unit, be sure to read
this service manual at first.
1.2
Ø
Warning
Installation
n Do not use a defective or underrated
circuit breaker. Use this appliance on a
dedicated circuit.
There is risk of fire or electric shock.
n For electrical work, contact the
deteriorate with age.
If the base collapses, the air conditioner could
fall with it, causing property damage, product failure,
and personal injury.
n Do not let the air conditioner run for
a long time when the humidity is very high and a
door or a window is left open.
Moisture may condense and wet or damage
furniture.
n Take care to ensure that power cable
could not be pulled out or damaged during
operation.
There is risk of fire or electric shock.
n Do not place anything on the power
dealer, seller, a qualified electrician, or an
Authorized service center.
Do not disassemble or repair the product,
there is risk of fire or electric shock.
n Always ground the product.
There is risk of fire or electric shock.
n Install the panel and the cover of
cable.
There is risk of fire or electric shock.
n Do not plug or unplug the power
supply plug during operation.
There is risk of fire or electric shock.
n Do not touch (operation) the product
control box securely.
There is risk of fire of electric shock.
n Always install a dedicated circuit and
with wet hands.
There is risk of fire or electric shock.
n Do not place a heater or other
breaker.
Improper wiring or installation may cause fore
or electric shock.
n Use the correctly rated breaker of
fuse.
There is risk of fire or electric shock.
n Do not modify or extend the power
cable.
There is risk of fire or electric shock.
n Do not install, remove, or reinstall
appliance near the power cable.
There is risk of fire and electric shock.
n Do not allow water to run into
electric parts.
It may cause fire, failure of the product, or
electric shock.
n Do not store or use flammable gas or
combustible near the product.
There is risk of fire or failure of product.
n Do not use the product in a tightly
the unit by yourself(customer).
There is risk of fire, electric shock, explosion,
or injury.
closed space for a long time.
Oxygen deficiency could occur.
n Be caution when unpacking and
installing the product.
Sharp edges could cause injury, be especially
careful of the case edges and the fins on the condenser
and evaporator.
n For installation, always contact the
dealer or an Authorized service center.
n When flammable gas leaks, turn off
the gas and open a window for ventilation
before turn the product on.
Do not use the telephone or turn switches on
or off.
There is risk of explosion or fire.
n If strange sounds, or small or smoke
1
comes from product. Turn the breaker off or
disconnect the power supply cable.
There is risk of electric shock or fire.
n Stop operation and close the window
n Do not install the product where the
noise or hot air from the outdoor unit could
damage the neighborhoods.
It may cause a problem for your neighbors.
n Use two or more people to lift and
in storm or hurricane. If possible, remove the
product from the window before the hurricane
transport the product.
Avoid personal injury.
n Do not install the product where it
arrives.
There is risk of property damage, failure of
product, or electric shock.
n Do not open the inlet grill of the
product during operation. (Do not touch the
electrostatic filter, if the unit is so equipped.)
There is risk of physical injury, electric shock,
or product failure.
n When the product is soaked (flooded
or submerged), contact an Authorized service
center.
There is risk of fire or electric shock.
n Be caution that water could not
will be exposed to sea wind (salt spray) directly.
It may cause corrosion on the product.
Corrosion, particularly on the condenser and evaporator
fins, could cause product malfunction or inefficient
operation.
Ø
Operational
n Do not expose the skin directly to
cool air for long periods of time. (Do not sit in
the draft).
This could harm to your health.
n Do not use the product for special
enter the product.
There is risk of fire, electric shock, or product
damage.
n Ventilate the product from time to
time when operating it together with a stove,
purposes, such as preserving foods, works of art,
etc. It is a consumer air conditioner, not a
precision refrigerant system.
There is risk of damage or loss of property.
n Do not block the inlet or outlet of air
etc.
There is risk of fire or electric shock.
n Turn the main power off when
flow.
It may cause product failure.
n Use a soft cloth to clean. Do not use
cleaning or maintaining the product.
There is risk of electric shock.
n When the product is not be used for a
long time, disconnect the power supply plug or
turn off the breaker.
There is risk of product damage or failure, or
unintended operation.
n Take care to ensure that nobody
harsh detergents, solvents, etc.
There is risk of fire, electric shock, or damage
to the plastic parts of the product.
n Do not touch the metal parts of the
product when removing the air filter. They are
very sharp.
There is risk of personal injury.
n Do not step on pr put anything on the
could step on or fall onto the outdoor unit.
This could result in personal injury and
product damage.
product. (outdoor units)
There is risk of personal injury and failure of
product.
Ø
CAUTION
n Always check for gas (refrigerant)
leakage after installation or repair of product.
Low refrigerant levels may cause failure of
product.
n Install the drain hose to ensure that
water is drained away properly.
n Always insert the filter securely.
Clean the filter every two weeks or more often if
necessary.
A dirty filter reduces the efficiency of the air
conditioner and could cause product malfunction or
damage.
n Do not insert hands or other object
A bad connection may cause water leakage.
through air inlet or outlet while the product is
n Keep level even when installing the
operated.
product.
To avoid vibration of water leakage.
There are sharp and moving parts that could
cause personal injury.
2
n Do not drink the water drained from
the product.
It is not sanitary could cause serious health
issues.
n Use a firm stool or ladder when
cleaning or maintaining the product.
Be careful and avoid personal injury.
n Replace the all batteries in the
remote control with new ones of the same type.
Do not mix old and mew batteries or different
n Do not recharge or disassemble the
batteries. Do not dispose of batteries in a fire.
They may burn of explode.
n If the liquid from the batteries gets
onto your skin or clothes, wash it well with clean
water. Do not use the remote of the batteries
have leaked.
The chemical in batteries could cause burns
or other health hazards
types of batteries.
There is risk of fire or explosion.
3
2. Function
Indoor unit
Operation by remote controller
Sensing by room temperature
Room temperature sensor.
Pipe temperature sensor.
Room temperature control
Maintain the room temperature in accordance w
ith the setting temperature.
Anti-freezing control in cooling
Prevent the water being frozen on evaporator by sensing
the evaporator pipe temperature in cooling mode
Time Delay Safety control
Restarting is for approx. 3 minutes..
Indoor fan speed control
Ionizer (Optional)
Turbo wind, high, med, low, breeze.
Two-direction air vane
BLDC fan motor
The unit will decide the louver direction according to
operation mode.
Sleep mode auto control
Self-diag. function
The fan is turn to low speed (cooling/heating).
The unit will be turn off at the seventh hour.
Anti-cold function
Independent dehumidification
The function is usually used in rainy days in
springtime or damp areas.
Prevent the cold wind at the
beginning of unit start.
Auto defrost
Air flow Direction control
The louver can be set at the desired position or
swing up and down automatically
Auto mode
The mode can be change by the room temperature.
Temp. Compensation
Auto-restart function
When the power supply is
interrupted and then restore, the air
conditioners automatically restore
the previous function setting.
Flexible wiring connection
4
Outdoor unit
Power relay control
The unit has 3 mins delay between continuously ON/OFF operations.
Low noise air flow system
Bird tail propeller fan makes the outdoor unit run more quietly.
Hydrophilic aluminum fin
The hydrophilic fin can improve the heating efficiency at operation mode.
4 way valve control
It is only operated in the heating operation mode except defrosting operation.
Anti-rust cabinet
Made from electrolytic zinc steel sheet and anti-rust coated components.
Valve protection cover
It protects the valves and prevents water from dripping.
Discharge pipe temperature protect
BLDC fan motor
EEV control
Low ambient heating
5
3. Dimension
3.1
Indoor Unit
MSC-09HRFN1-QD2E
Model
MSC-12HRFN1-QD2E
W(mm)
H(mm)
D(mm)
MSC-09HRFN1-QD2E
790
265
195
MSC-12HRFN1-QD2E
920
292
225
6
3.2
Outdoor Unit
MOC1-09HFN1-QD2E
MOF-12HFN1-QD2E
7
4. Specification
Indoor
Outdoor
MSC-09HRFN1-QD2E
MOC1-09HFN1-QD2E
MSC-12HRFN1-QD2E
MOF-12HFN1-QD2E
1,220-240V~,50/60Hz
1, 220-240V~, 50/60Hz
Power supply
Ph-V-Hz
Moisture Removal
L/h
1.2
1.4
Max. input consumption
W
1950
2950
Max. current
A
9.0
13.5
Model
DA108X1C-20FZ3
DA150S1C-20FZ
Type
Rotary DC
Twin-Rotary DC
Brand
TOSHIBA
TOSHIBA
Compressor
Capacity
W
3195
4480
Input
W
855
1150
Rated current(RLA)
A
Thermal protector
9.7
KSD301
Capacitor
uF
No
No
Refrigerant oil
ml
480
500
WZDK20-38G
WZDK30-38G
Welling/Panasonic
Welling/Panasonic
Model
Indoor fan motor
5.3
CS-74
Brand
20
30
r/min
1200/900/700
1120/830/650
Indoor air flow (Hi/Mi/Lo)
m3/h
600/500/380
630/520/400
Indoor noise level (Hi/Mi/Lo)
dB(A)
39/32/25
43/34/26
Indoor unit
Output
W
Speed(hi/mi/lo)
Dimension (W*H*D)
mm
790*265*198
920*292*225
Packing
mm
875*375*285
1015*368*295
Kg
8.5/10.5
11.5/14.5
WZDK35-38G
WZDK50-38G
Welling/Panasonic
Welling/Panasonic
35
50
(W*H*D)
Net/Gross weight
Model
Outdoor fan motor
Brand
Output
W
Speed
r/min
800/550
750/500
Outdoor air flow
m3/h
2000
2500
Outdoor noise level
dB(A)
54
55
Outdoor unit
Dimension(W*H*D)
mm
760*590*285
845*695*335
Packing
mm
887*645*355
965*755*395
Kg
39/42
47/51
g
1260
1400
Ф6.35/Ф9.53
Ф6.35/Ф9.53
20
(W*H*D)
Net/Gross weight
Refrigerant type R410A
Liquid side/ Gas side
mm
Max. refrigerant pipe length
m
20
Max. difference in level
m
8
8
Operation temp
℃
17 ~ 30
17 ~ 30
Ambient temp
℃
-15 ~ 50
-15 ~ 50
Refrigerant piping
The above design and specifications are subject to change without prior notice for product improvement.
8
5. Refrigerant cycle diagram
9
6. Wiring diagram
6.1
Indoor Unit
MSC-09HRFN1-QD2E
MSC-12HRFN1-QD2E
10
6.2
Outdoor Unit
MOC1-09HFN1-QD2E
MOF-12HFN1-QD2E
11
7. Installation details
7.1
Wrench torque sheet for installation
Outside diameter
7.2
Torque
mm
inch
Kgf.m
Ф6.35
1/4
1.8
Ф9.52
3/8
4.2
Connecting the cables
The power cord of connect should be selected according to the following specifications sheet.
Grade
Unit
9K
12K
2
1.5
1.5
mm
7.3
Pipe length and the elevation
Standard
Pipe size
Capacity
Max.
Max.
Additional
Elevation
Length
refrigerant
(m)
B (m)
A (m)
(g/m)
length
Btu/h
Gas
Liquid
9k
3/8’’ (Ф9.52)
1/4’’ (Ф6.35)
5
8
20
20
12k
3/8’’ (Ф9.52)
1/4’’ (Ф6.35)
5
8
20
20
Caution:
Capacity is based on standard length and maximum allowance length is base of reliability.
Oil trap should be installed per 5-7 meters.
7.4
Air purging of the piping and indoor unit
Required tools:
Hexagonal wrench; adjustable wrench; torque wrenches, wrench to hold the joints and gas leak detector.
Note:
The air in the indoor unit and in the piping must be purged. If air remains in the refrigeration piping, it will affect
the compressor, reduce the cooling capacity, and could lead to a malfunction of unit.
12
Be sure, using a torque wrench to tighten the service port cap (after using the service port), so that it prevents
the gas leakage from the refrigeration cycle.
Procedure
1. Recheck the piping connections.
2. Open the valve stem of the 2-way valve
counterclockwise approximately 90’, wait 10
seconds, and then set it to closed position.
Be sure to use a hexagonal wrench to
operate the valve stem.
3. Check for gas leakage.
Check the flare connection for gas leakage
4. Purge the air from the system.
Set the 2-way valve to the open position
Caution:
If gas leakage is discovered in step (3) above,
take the following measures.
If the leaks stop when the piping connections
are tightened further, continue working from step (4).
If the gas leaks do not stop when the
connections are retightened, repair the location of the
leak, discharge all of the gas through the service port,
and then recharge with the specified amount of gas
from a gas cylinder.
and remove the cap from the 3-way valve’s service
port.
Using the hexagonal wrench to press the
valve core pin, discharge for three seconds and
then wait for one minute.
5. Use torque wrench to tighten the service port cap
to a torque of 1.8 kgf.m. (18n.m)
6. Set the 3-way valve to the opened position.
7. Mounted the valve stem nuts to the 2-way and
3-way valves.
8. Check for gas leakage.
At this time, especially check for gas leakage from
the 2-way and 3-way stem nuts, and from the
service port.
13
7.5
Pumping down (Re-installation)
Procedure
1. Confirm that both the 2-way and 3-way valves are set to the opened position.
Remove the valve stem caps and confirm that the valve stems are in the opened position.
Be sure to use a hexagonal wrench to operate the valve stems.
2. Operate the unit for 10 to 15 minutes.
3. Stop operation and wait for 3 minutes, then connect the charge set to the service port of the 3-way valve.
Connect the charge hose with the push pin to the gas service port.
5. Air purging of the charge hose.
Open the low-pressure valve on the charge set slightly to purge air from the charge hose.
6. Set the 2-way valve to the close position.
7. Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0.1MPa.
8. Immediately set the 3-way valve to the closed position.
Do this quickly so that the gauge ends up indicating 0.3 to 0.5Mpa.
Disconnect the charge set, and amount the 2-way and 3-way valve’s stem nuts and service port caps.
Use a torque wrench to tighten the service port cap to a torque of 1.8 kgf.m.
Be sure to check for gas leakage.
14
7.6
Re-air purging (Re-installation)
Procedure:
1. Confirm that both the 2-way and 3-way valves are set to the closed position.
2. Connect the charge set and a charging cylinder to the service port of the 3-way valve.
Leave the valve on the charging cylinder closed.
3. Air purging.
Open the valves on the charging cylinder and the charge set. Purge the air by loosening the flare nut on the
2-way valve approximately 45’ for 3 seconds then closing it for 1 minute; repeat 3 times.
After purging the air, use a torque wrench to tighten the flare nut to on the 2-way valve.
4. Check the gas leakage.
Check the flare connections for gas leakage.
5. Discharge the refrigerant.
Close the valve on the charging cylinder and discharge the refrigerant until the gauge indicates 0.3 to 0.5 Mpa.
6. Disconnect the charge set and the charging cylinder, and set the 2-way and 3-way valves to the open position.
Be sure to use a hexagonal wrench to operate the valve stems.
7. Mount the valve stems nuts and the service port cap.
Be sure to use a torque wrench to tighten the service port cap to a torque 18N.m.
Be sure to check the gas leakage.
15
7.7
Balance refrigerant of the 2-way, 3-way valves
Procedure:
1. Confirm that both the 2-way and 3-way valves are set to the open position.
2. Connect the charge set to the 3-way valve’s service port.
Leave the valve on the charge set closed.
Connect the charge hose with the push pin to the service port.
3. Open the valves (Low side) on the charge set and discharge the refrigerant until the gauge indicates 0.05 to 0.1Mpa.
If there is no air in the refrigeration cycle [the pressure when the air conditioner is not running is higher
than 0.1Mpa, discharge the refrigerant until the gauge indicates 0.05 to 0.1 Mpa. If this is the case, it will not be
necessary to apply an evacuation.
Discharge the refrigeration gradually; if it is discharged too suddenly, the refrigeration oil sill be discharged.
16
7.8
Evacuation
Procedure:
1. Connect the vacuum pump to the charge set’s centre hose.
2. Evacuation for approximately one hour.
Confirm that the gauge needle has moved toward -0.1 Mpa (-76 cmHg) [vacuum of 4 mmHg or less].
3. Close the valve (Low side) on the charge set, turn off the vacuum pump, and confirm that the gauge needle
does not move (approximately 5 minutes after turning off the vacuum pump).
4. Disconnect the charge hose from the vacuum pump.
Vacuum pump oil, if the vacuum pump oil becomes dirty or depleted, replenish as needle.
17
7.9
Gas charging
Procedure:
1. Connect the charge hose to the charging cylinder.
Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder.
2. Purge the air from the charge hose.
Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air
(be careful of the liquid refrigerant).
3. Open the valves (Low side) on the charge set and charge the system with liquid refrigerant.
If the system cannot be charge with the specified amount of refrigerant, if can be charged with a little at a
time (approximately 150g each time0 while operating the air conditioner in the cooling cycle; however, one time is
not sufficient, wait approximately 1 minute and then repeat the procedure.(pumping down-pin).
4. Immediately disconnect the charge hose from the 3-way valve’s service port.
Stopping partway will allow the refrigerant to be discharged.
If the system has been charged with liquid refrigerant while operating the air conditioner, turn off the air
conditioner before disconnecting the hose.
5. Mounted the valve stem caps and the service port
Use torque wrench to tighten the service port cap to a torque of 18N.m.
Be sure to check for gas leakage.
18
8. Operation characteristics
MSC-09HRFN1-QD2E
Piping Length Characteristics (Cooling)
Cooling Characteristics
2.70
Cooling Capacity (KW)
2.70
2.65
2.60
2.55
2.50
2.45
2.65
2.60
2.55
2.50
2.45
2.40
0.64
0.68
Cooling Power Input (KW)
Cooling Power Input (KW)
Cooling Capacity (KW)
2.75
0.66
0.64
0.62
0.60
0.58
0.56
25 27 29 31 33
0.62
0.60
0.58
0.56
0.54
0.52
5
35 37 39 41 43
6
7
9
10 11 12 13 14 15
Remark: Indoor room temperature: 27/19℃
Outdoor temperature: 35℃
Indoor fan speed: High
Remark: Indoor room temperature: 27/19℃
Indoor fan speed: High
Pipe length: 5m
Heating Characteristics
Piping Length Characteristics (Heating)
3.4
Heating Capacity (KW)
3.2
3.2
3.0
2.8
2.6
2.4
2.2
Heating Power Input (KW)
Heating Capacity (KW)
8
Piping Length (m)
Outdoor Ambient Temperature (℃)
Heating Power Input (KW)
8.1
1.30
1.25
1.20
1.15
1.10
-15 -13 -11 -9
-7
-5
-3
-1
1
3
Outdoor Ambient Temperature (℃)
Remark: Indoor room temperature: 20℃
Indoor fan speed: High
Pipe length: 5m
3.0
2.8
2.6
2.4
2.2
2.0
0.66
0.64
0.62
0.60
0.58
0.56
0.54
5
6
7
8
9
10 11 12 13 14 15
Piping Length (m)
Remark: Indoor room temperature: 20℃
Outdoor temperature: 7/6℃
Indoor fan speed: High
19
MSC-12HRFN1-QD2E
Piping Length Characteristics (Cooling)
Cooling Characteristics
3.6
Cooling Capacity (KW)
3.7
3.6
3.5
3.4
3.3
3.4
3.3
3.2
3.1
3.0
0.92
0.84
0.88
Cooling Power Input
3.5
3.2
Cooling Power Input (KW)
Cooling Capacity (KW)
3.8
0.84
0.80
0.76
0.72
25 27 29 31 33
0.80
0.76
0.72
0.68
0.64
5
35 37 39 41 43
6
7
9
10 11 12 13 14 15
Remark: Indoor room temperature: 27/19℃
Outdoor temperature: 35℃
Indoor fan speed: High
Remark: Indoor room temperature: 27/19℃
Indoor fan speed: High
Pipe length: 5m
Heating Characteristics
Piping Length Characteristics (Heating)
3.9
Heating Capacity (KW)
3.6
3.4
3.2
3.0
2.8
2.6
2.4
1.65
Heating Power Input (KW)
Heating Capacity (KW)
8
Piping Length (m)
Outdoor Ambient Temperature (℃)
Heating Power Input (KW)
8.2
1.60
1.55
1.50
1.45
1.40
1.35
-15 -13 -11 -9
-7 -5
-3
-1
1
3
Outdoor Ambient Temperature (℃)
Remark: Indoor room temperature: 20℃
Indoor fan speed: High
Pipe length: 5m
3.8
3.7
3.6
3.5
3.4
3.3
0.90
0.88
0.86
0.84
0.82
0.80
0.78
5
6
7
8
9
10 11 12 13 14 15
Piping Length (m)
Remark: Indoor room temperature: 20℃
Outdoor temperature: 7/6℃
Indoor fan speed: High
20
9. Electronic function
9.1
Abbreviation
T1: Indoor ambient temperature
T2: Pipe temperature of indoor heat exchanger
T3: Pipe temperature of outdoor heat exchanger
T4: Outdoor ambient temperature
9.2
Display function
9.2.1 Icon explanation on indoor display board.
① Auto indicator
This indicator illuminates when the air conditioner is in AUTO operation.
② Timer indicator
This indicator illuminates when TIMER is set ON/OFF.
③ DEF. Indicator
This indicator illuminates when the air conditioner starts defrosting automatically or when the
warm air control feature is activated in heating mode.
④ TEMPERATURE indicator
Usually it displays the temperature settings. When change the setting temperature, this indicator begins
to flash, and stops 20 seconds later. It displays the room temperature when the air conditioner is in FAN
only operation, and the range of that is 0~50℃. It will also display the codes when malfunction or
protection happen.
⑤ Frequency indicator
This indicator appears only when the compressor is in operation and indicates the current operating
frequency.
9.2.2 LED display control function.
Pressing “LED display” button on remote controller will turn off all displays on indoor unit, while pressing once
again, all displays will resume.
9.3
Protection
9.3.1 Protection of compressor top temperature.
When the Over-load Protector is cut due to too high temperature of compressor top, the unit will stop. When the
Over-load Protector is closed again due to decreasing of compressor top temperature, the unit will restart( in this
case the compressor is restricted by Three Minutes Delay protection).
9.3.2 Protection of discharge temperature (Td).
1) Compressor will stop immediately if Td>115℃ for 5s.
2) If 90℃≤Td≤115℃, compressor will run with restricted frequency.
21
3) If Td<90℃, compressor will restart or run without restricted frequency
9.3.3 Three Minutes Delay at restart for compressor.
It will take 3 minutes every time when compressor starts.
It will take only 1 minute when the unit is powered on at first time.
9.3.4
Temperature sensor protection at open circuit or short circuit.
9.3.5 Protection of indoor fan speed.
When indoor fan speed is too low (lower than 300rpm for 50 seconds), the unit will stop and LED display error
code and can’t return to normal operation automatically.
9.3.6 Protection of outdoor fan speed.
When outdoor fan speed is lower than 300rpm or higher than 1500rpm for 60 seconds, the unit will stop and
LED display error code and can’t return to normal operation automatically.
9.3.7
Inverter module Protection.
Inverter module has a protection function against current, voltage and temperature. If these protections
happened, the unit will stop and LED display error code .
9.3.8 Indoor fan delayed open function.
When the unit is turned on at all modes, the indoor fan will operate 10 seconds later than the action of louver.
9.3.9
EEPROM parameter error.
9.3.10 Communication error between indoor and outdoor units.
When outdoor unit doesn’t receive communication signal from indoor unit for 2 minutes, the unit will stop
compressor and display error code, stop outdoor fan 30 seconds later and stop 4 way valve 2 minutes later.
9.3.11 Communication error between main chip and compressor driving chip of outdoor units.
When main chip and compressor driving chip don’t receive communication signal from each other for 1 minutes,
the unit will stop compressor and display error code.
9.3.12
Compressor preheating function.
1) Preheating permitting condition:
If T4(outdoor ambient temperature)<3℃ and the machine connects to power supply newly or if T4<3℃ and
compressor has stopped for over 3 hours, the compressor heating cable will work.
2) Preheating mode:
A weak current flows through the coil of compressor from the wiring terminal of compressor, then the compressor
is heated without operation.
3) Preheating release condition:
If T4>5℃ or user turns on the machine and compressor runs, preheating function will stop.
9.3.13
Frequency limit protection against low voltage.
VDC
Normal working frequency
VOLT_RST1_ADD
VOLT_LIM1_ADD
VOLT_LIM_FREQ1_ADD
VOLT_RST2_ADD
VOLT_LIM2_ADD
VOLT_LIM_FREQ2_ADD
22
9.4
Fan-Only Mode
9.4.1 Temperature setting function is disabled, and no setting temperature display.
9.4.2 In this mode, the action of louver is the same as in cooling mode.
9.4.3 The action of auto fan in fan-only mode is the same as auto fan in cooling mode with 24℃ setting
temperature.
℃
high
T1 – 24
3.5
3.0
medium
1.5
1.0
9.5
low
Cooling Mode
The operation frequency of compressor after starting submits to following rule.
ΔT=(room temp) – (setting Temp)
9.5.1
A
1.5
B
1.0
0.5
C
-0.5
D
-1.0
When the machine is running and ΔT(=room temp. – setting temp.) changes, the frequency of compressor
will rise or descend a grade (7 minutes after starting).
After starting, if ΔT stays in a zone for 3 minutes, the frequency will change as follow:
Zone A : Current frequency rise a grade till the maximum grade F8.
Zone B: Keep the current frequency of compressor.
Zone C: Descend the current frequency of compressor until F1.
Zone D: Compressor stops after running as the minimum frequency F1 for 60 minutes or ΔT is less than -2℃.
9.5.2 Indoor heat exchanger anti-freezing function.
If T2 is lower than 0℃, the compressor stops and resumes when T2>5℃.
9.5.3 Outdoor unit current control in cooling mode.
comp. pause
outdoor unit current
I3COOL
I2COOL
freq. descends if curr. rises;
freq. remains if curr. descends
I1COOL
running normally
23
9.5.4 Rating cooling capacity test function
1) Set the indoor unit with remote controller as: high fan, 17℃ in cooling mode, then press “TURBO” button
on controller 6 times or more within 10 seconds(make sure indoor unit receives these signals), the machine
will turn into rating capacity test mode, the buzzer will make a “di” sound for 2 seconds continuously. Also,
indoor fan will change to rating speed, the frequency of compressor will be fixed as rating value. Any
condition of above is not satisfied, the machine cannot be turned into rating capacity test mode.
2) The machine will quit from the rating capacity test mode if running for 5 hours or changing fan speed or
setting temperature.
9.5.5 Turbo function(press the “TURBO” button on remote controller)
1) Elevate current frequency to a higher grade.
2) Indoor fan turns to turbo speed.
3) After running for 30 minutes the machine will turn back to previous setting mode.
9.5.6
Indoor fan operation rule.
1) In cooling mode, indoor fan runs all the time and the speed can be selected as high,
medium, low and auto.
ΔT=(room temp) – (setting Temp)
2) Auto fan in cooling mode acts as follow:
℃
high
4.0
3.0
medium
1.5
1.0
low
9.5.7 Condenser high temperature protection function(in cooling and drying mode)
If T3>60℃ for 5 seconds, compressor will stop immediately, and the machine will not resume until T3<52℃.
9.6
9.6.1
Drying mode
Indoor fan speed is fixed at breeze grade and can’t be changed.
The horizontal angle is the same as in cooling mode.
9.6.2
Room overlow temperature protection
In drying mode, if room temperature is lower than 10℃, compressor will stop and not resume until room
temperature climbs up to 12℃.
9.6.3
Evaporator anti-freezing protection, condenser high temperature protection and outdoor unit frequency limit
are valid, and they are the same as that in cooling mode.
9.6.4
9.7
Horizontal louver action is the same as that in cooling mode.
Heating mode
9.7.1
Indoor fan action:
24
1) Anti-cold-wind function.
Evaporator temp
44
℃
39
36
35
setting fan speed
medium fan
low fan
32
breeze
24
super breeze
17
fan stop
2) If the compressor stops caused by room temperature rising, indoor fan will be forced to run 127 seconds
with breeze. During this period, anti-cold-wind is disabled. After this, anti-cold –wind function is available.
3) If the machine runs in rating capacity test mode, indoor fan runs with rating speed, and anti-cold-wind is
disabled.
9.7.2
Indoor fan speed can be set as high, medium, low or auto grade, but anti-cold-wind function is
preferential.
ΔT=(room temp) – (setting Temp)
Auto fan action in heating mode.
9.7.3
℃
2.5
low
2.0
medium
1.5
1.0
high
The operation frequency of compressor after starting submits to following rule:
ΔTh=(room temp) – (setting Temp)
℃
5.0
D
4.5
3.5
C
3.0
B
2.5
A
When the machine runs, if ΔTh stays in a zone for 3 minutes, action of frequency is as follow:
Zone A: Elevate the current frequency one grade, and not stop until the maximum grade.
Zone B: Keep the current frequency.
Zone C: Descend the current frequency one grade.
25
Zone D: Compressor stops after running with F1 for 60 minutes or when ΔTh>6℃.
9.7.4
Outdoor unit current control in heating mode.
comp. pause
outdoor unit current
I3HEAT
I2HEAT
freq. descends if curr. rises;
freq. remains if curr. descends
I1HEAT
running normally
9.7.5
Indoor heat exchanger high temperature protection.
If T2>60℃, the compressor will stop and not resume until T2<48℃.
9.7.6 Defrosting mode.
1) Condition of defrosting.
Condition 1:
If T4>0℃,
When the units are running, if the following two items are satisfied the units start defrosting:
a) The units runs with T3<3℃ for 40 minutes and T3 keeps lower than -6℃ for more than 3 minutes.
b) The units runs with T3<3℃ for 80 minutes and T3 keeps lower than -4℃ for more than 3 minutes.
Condition 2:
If T4<0℃,
The program judges according to the condition 1, if the two items are satisfied, then judges if T2
has descended for more than 5℃, if it has the machine starts defrosting, or continues to judge T2
and will not defrost until T2 drops more than 5℃.
Condition 3:
No matter what value T4 is, if the machine runs with T3<3℃ for more than 120 minutes and
T3 keeps lower than -2℃ for more than 3 minutes, the machine will defrost, no matter if T2 drops
for more than 5℃ or not.
2) Condition of ending defrosting.
If any one of following items is satisfied, defrosting will finish and the machine will turn to normal heating mode.
a) T3 rises to be higher than 12℃.
b) T3 rises to be higher than 8℃ and remains for 80 seconds.
c) The machine has run for 10 minutes in defrosting.
9.7.7 Defrosting action.
For model MSC-09HRFN1-QD2E
26
F8
on
compressor
off
on
4-way valve
off
on
outdoor fan
indoor fan
off
on
off
indoor fan breeze 10s
120s
130s
no longer than 10 minutes
30s
For model MSC-12HRFN1-QD2E
9.7.8
Heating capacity test function.
1) Set the indoor unit with remote controller as: high fan, 30℃ in heating mode, then press “TURBO” button
on controller 6 times or more within 10 seconds(make sure indoor unit receives these signals), the machine will turn
into heating capacity test mode according to different ambient temperatures, the buzzer will make a “di” sound for 2
seconds continuously. Also, indoor fan speed and compressor frequency will be fixed as different values. Any condition
of above is not satisfied, the machine cannot be turned into heating capacity test mode.
27
Rated heating
Maximum heating
Medium heating
Minimum heating
capacity
capacity
capacity
capacity
4≤T4<12℃
-2℃≤T4<4℃
-10℃≤T4<-2℃
T4<-10℃
Frequency fixed
RATIFH
MAXRATIFH
ZRATIFH
MINRATIFH
Fan speed fixed
RAHFAN
MAXRAHFAN
ZRAHFAN
MINRAHFAN
Outdoor ambient temp.
range when entering test
T4: Outdoor ambient temperature
2) The machine will quit from the rating capacity test mode if running for 5 hours or changing fan speed or
setting temperature.
9.7.9
Turbo function in heating mode. (press the “TURBO” button on remote controller)
1) Elevate current frequency (excluding F8) to a higher grade. If indoor fan is in low speed or pause caused
by defrosting or anti-cold-wind function, frequency of compressor will not be elevated one grade until these limit has
been released.
2) Indoor fan changes to turbo speed and anti-cold-wind function is valid.
9.8
Auto mode function
9.8.1 This mode can be chosen with remote controller and the setting temperature can be changed between
17~30℃.
In auto mode, the machine will choose cooling, heating or fan-only mode according to ΔT(ΔT =T1-Ts).
ΔT=T1-Ts
Running mode
ΔT>1℃
Cooling
-1≤ΔT≤1℃
Fan-only
ΔT<-1℃
Heating
9.8.2 Indoor fan will choose auto speed of relevant mode.
9.8.3
If the machine switches mode between heating and cooling, compressor will keep stopping for 15
minutes and then rechoose mode according to ΔT.
9.8.4
9.9
If the setting temperature is modified, the machine will rechoose running function.
Forced operation function
9.9.1 Forced cooling and auto function can carry out with a touch button. In these two modes, the machine can be
changed by remote controller to any other mode at any moment.
9.9.2 When the machine is off, pressing the touch button once, the unit will enter forced auto mode. When the
machine is off, pressing the touch button twice within 5s, the unit will enter forced cooling mode. When the unit is
running at forced auto or forced cooling mode, pressing the touch button continuously, the unit will be turned off.
9.9.3 In forced operation mode, all general protections is available.
9.9.4 In forced cooling mode, the unit will run with fixed frequency F2 at low speed. 30 minutes later, the unit will turn
to normal auto mode with setting temperature 24℃.
9.9.5 In forced auto mode, the unit will run with setting temperature 24℃.
9.10
Action of 4-way valve
In heating, fan-only, standby or turning off mode, 4-way valve is off, while in cooling\drying and forced
28
cooling mode 4-way valve is on. If the machine changes operation mode, 4-way valve will be delayed off 2 minutes
after compressor stops. (For model MSC-09HRFN1-QD2E)
In cooling, drying, fan-only, or turning off mode, 4-way valve is off, while in heating mode 4-way valve is
on. If the machine changes operation mode, 4-way valve will be delayed off 2 minutes after compressor stop. (For
model MSC-12HRFN1-QD2E)
For defrosting, please refer to the passage “defrosting mode”.
9.11
Action of Electronic Expansive Valve
Electronic Expansive Valve (EEV) is controlled according to the discharge temperature.
Opening range of EEV is 80p~480p.
EEV will be closed completely(-520p) when the unit is firstly got through the power.
Then it will be at the maximum opening(480p) and the unit will be standby.
EEV will be open at different initial openings after compressor’s start in different running modes.
Initial opening will be kept for 3 minutes before it is controlled according to the discharge temperature.
Mode
Initial opening of EEV
Cooling/Drying
PMV_COOL_INIT_ADD
Heating
PMV_HEAT_INIT_ADD
EEV will be adjusted to opening-target immediately when discharge temperature increases.
EEV will be adjusted to opening-target gradually(take action every 2 minutes) when discharge temperature decreases.
In cooling or dry mode:
℃
PMV_COOL_PLAT4_ADD
PMV_COOL_UTEMP3_ADD
PMV_COOL_DTEMP3_ADD
PMV_COOL_PLAT3_ADD
PMV_COOL_UTEMP2_ADD
PMV_COOL_DTEMP2_ADD
PMV_COOL_PLAT2_ADD
PMV_COOL_UTEMP1_ADD
PMV_COOL_DTEMP1_ADD
PMV_COOL_PLAT1_ADD
In heating mode:
℃
PMV_HEAT_UTEMP3_ADD
PMV_HEAT_PLAT4_ADD
PMV_HEAT_DTEMP3_ADD
PMV_HEAT_UTEMP2_ADD
PMV_HEAT_PLAT3_ADD
PMV_HEAT_DTEMP2_ADD
PMV_HEAT_UTEMP1_ADD
PMV_HEAT_PLAT2_ADD
PMV_HEAT_DTEMP1_ADD
PMV_HEAT_PLAT1_ADD
EEV opening will be PMV_DEFROST_PLS_ADD during defrosting.
29
EEV opening will be fixed at PMV_COOL_RAT_PLS_ADD when the unit is on rating cooling capacity test.
EEV opening will be fixed at PMV_HEAT_RAT_PLS_ADD when the unit is on rating heating capacity test.
When the unit is turned off, EEV will be closed completely(-160p) and then be at the maximum opening(480p).
9.12
Action of outdoor fan
9.12.1 Outdoor fan is Brushless DC (BLDC) fan.
9.12.2 Outdoor fan speed can be selected among high fan, medium fan and low fan automatically according to
running mode and outdoor ambient temperature.
9.12.3 Action of outdoor fan in cooling & drying mode(including cooling in auto & forced mode).
(T4 is outdoor ambient temperature.)
T4
DC_FAN_HI_SPD_ADD
28℃
26℃
DC_FAN_MID_SPD_ADD
22℃
20℃
DC_FAN_LOW_SPD_ADD
9.12.4 Action of outdoor fan in low ambient cooling function.
Low ambient cooling function is optional for these models.
The unit will get into low ambient cooling function automatically when T4≦15℃ and the compressor is running.
Outdoor fan will be controlled according to T3 as below.
T3
Outdoor fan is controller according to T4.
20℃
0℃
Outdoor fan stops.
30
The unit will quit low ambient cooling function when:
1) T4>15℃ and T3≧20℃ for 1 minute (Outdoor fan will run during this 1 minute.) The unit will re-judge the
entering condition when T4≦15℃ 1 minute later.
2) Compressor stops. (Re- judge the entering condition when compressor restarts.)
9.12.5 Outdoor fan speed will be fixed at DC_FAN_COOL_RAT_SPD_ADD when the unit is on rating cooling
capacity test. Outdoor fan speed will be fixed at DC_FAN_HEAT_RAT_SPD_ADD when the unit is on rating heating
capacity test.
9.12.6 Action of outdoor fan in heating mode(including heating in auto mode).
(T4 is outdoor ambient temperature.)
T4
DC_FAN_LOW_SPD_ADD
17℃
15℃
DC_FAN_MID_SPD_ADD
12℃
10℃
DC_FAN_HI_SPD_ADD
9.13
9.13.1
Oil return function
The unit will run with a higher frequency RET_OIL_FREQ2_ADD for RET_OIL_TIME2_ADD seconds when
running frequency lower than RET_OIL_FREQ1_ADD for RET_OIL_TIME1_ADD minutes.
9.13.2 The unit will quit oil return function when it gets into defrosting.
9.13.3 The unit will quit oil return function when any protection happens.
9.14
9.14.1
9.14.2
Timer function
Timing range is 24 hours, and the minimum resolution is 15 minutes.
Timer on.
After turning off, the machine will turn on automatically when reaching the setting time.
9.14.3
Timer off.
After turning on, the machine will turn off automatically when reaching the setting time.
31
9.14.4
Timer on/off.
After turning off, the machine will turn on automatically when reaching the setting “on” time, and then turn off
automatically when reaching the setting “off” time.
9.14.5
Timer off/on.
After turning on, the machine will turn off automatically when reaching the setting “off” time, and then turn on
automatically when reaching the setting “on” time.
9.15
Sleep function mode
9.15.1 Operation time in sleep mode is 7 hours. After 7 hours the machine quits this mode and turns off.
9.15.2 In cooling, heating or auto mode sleep function is available.
9.15.3 Operation process in sleep mode is as follow:
1)
After pressing ECONOMIC or SLEEP button on controller, the machine will turn into sleep mode.
2)
When cooling, the setting temperature rises 1℃(be lower than 30℃) every one hour, 2 hour later the
rising stops and indoor fan is fixed as low speed.
3)
When heating, the setting temperature descends 1℃(be lower than 30℃) every one hour, 2 hour later
the descending stops and indoor fan is fixed as low speed, and anti-cold-wind is available.
9.15.4 If user uses timer on function in sleep mode, sleep function will pause and not resume until reaches the setting
on time.
9.15.5 When user uses timer off function in sleep mode(or sleep function in timer off mode), if the timing time is less
than 7 hours, sleep function will be cancelled when reaching the setting time. If the timing time is more than 7
hours, the machine will not stop until reaches the setting off time in sleep mode.
9.16
Auto-Restart function
The indoor unit is equipped with auto-restart function. In case of a sudden power failure, the setting conditions
before the power failure will be restored. The unit will resume the previous operation setting automatically after 3
minutes when power returns.
9.17
Ionizer function (optional)
The indoor unit is equipped with Ionizer, which is controlled by the CLEAN AIR button on the remote controller
when the unit is turned on. Press the CLEAN AIR button to activate the function. Press it again to stop the function.
During the time when Ionizer being controlled by remote controller, Ionizer will be turned off automatically, if
indoor fan stops running due to malfunctions or anti-cold-wind. When indoor fan restarts after malfunctions
being eliminated and anti-cold-wind being released, Ionizer will be available again.
9.18
Outdoor heating cable
Outdoor chassis heating cable is fixed on outdoor chassis to help deicing and to avoid freezing. The chassis heating
cable’s power is 85W, rated voltage is 220V-240V.
Outdoor crankcase heating cable is fixed around compressor to help starting compressor.
The crankcase heating
cable’s power is 20W, rated voltage is 220V-240V.
Outdoor heating cable will start to work when compressor stops and T4<3℃.
Outdoor heating cable will stop working when T4>8℃.
32
33
10. Troubleshooting
Safety
Because of there are capacitors in PCB and relative circuit in outdoor unit, even shut down the power supply,
electricity power still are kept in capacitors, do not forget to discharge the electricity power in capacitor.
Electrolytic Capacitors
(HIGH VOLTAGE!
CAUTION!)
Bulb (25-40W)
34
10.1
Indoor Unit Error Display
Display
LED STATUS
E0
EEPROM parameter error
E1
Indoor / outdoor units communication protection
E3
Indoor fan speed out of control
E5
Open or short circuit of outdoor temperature sensor
E6
Open or short circuit of room or evaporator temperature sensor
E7
Outdoor fan speed out of control
P0
Inverter module (or IGBT) over-strong current protection
P1
Over voltage or too low voltage protection
P2
Temperature protection of compressor top.
P4
Inverter compressor drive error
35
10.2
Diagnosis and Solution
10.2.1 E0(EEPROM parameter error) error diagnosis and solution
Circuit or software error on indoor PCB
Replace indoor PCB
10.2.2 E1(indoor / outdoor units communication protection) error diagnosis and solution
Disconnect the power supply, after 1 minute,
connect the power supply , turn on the unit with
remote controller
Does the unit work normally?
NO
Check the wiring between
indoor and outdoor unit. Is
the connection of L, N, S and
GND good?
Is the GND connection on
outdoor PCB good?
NO
Reconnect and retest again
Yes
Is the LED4(red) on
outdoor PCB bright and
LED1(yellow) blinking?
Replace indoor PCB
and repower on. Is
the failure cleared?
Yes
No
The power supply for
outdoor PCB is fail. Check
the wiring on outdoor PCB
comparing with wiring plate.
Is the connection good?
Yes
No
Replace outdoor e-box.
Correct the connection.
10.2.3 E3(indoor fan speed out of control) diagnosis and solution
Is the indoor fan motor
connector and connection
good?
NO
Repair the connector and
reconnect
YES
Indoor PCB is defective.
Replace the indoor PCB.
YES
Is voltage being applied
to the fan motor right?
NO
Replace the indoor fan
motor
36
10.2.4 E5(Open or short circuit of outdoor temperature sensor) diagnosis and solution.
Is the outdoor temperature
sensor connector and
connection good?
NO
Repair the connector and
reconnect
YES
Replace the sensor and
check if E5 display again?
YES
Replace outdoor e-box
10.2.5 E6(open or short circuit of room or evaporator temperature sensor) diagnosis and solution.
Is the indoor temperature
and evaporator sensor
connector and connection
good?
NO
Repair the connector and
reconnect
YES
Replace the sensor and
check if E6 display again?
YES
Replace the.indoor PCB
10.2.6 E7(outdoor fan speed out of control) diagnosis and solution
Is the outdoor fan motor
connector and connection
good?
NO
Repair the connector and
reconnect
YES
Outdoor PCB is defective.
Replace the outdoor PCB.
YES
Is voltage being applied
to the fan motor right?
NO
Replace the outdoor fan
motor
10.2.7 P0(Inverter module or IGBT over-strong current protection) diagnosis and solution.
Is all connections on PCB
and between PCB and
compressor good?
NO
Repair or correct the
connector or connection.
YES
Replace the outdoor PCB
and then repower on. Is
the failure cleared?
NO
Check the compressor
37
10.2.8 P1(over voltage or too low voltage protection) diagnosis and solution.
Is the power supply good?
NO
Be sure the power supply is
normal when using the units
YES
Replace the outdoor e-box.
10.2.9 P2(temperature protection of compressor top) diagnosis and solution.
NO
Does compressor
operate?
YES
Is the connection
good?
NO
Reconnect and retest.
YES
Is refrigerant
circulation
volume normal?
NO
Is protector
normal?
Replace the protector.
YES
NO
Check the outdoor
main PCB. Is there
some problem?
Charge refrigerant
YES
Replace the outdoor PCB.
Is abnormality
the same after
gas charging?
NO
Check refrigerant system (such as
clogging of capillary, etc)
10.2.10 P4(inverter compressor drive error) diagnosis and solution.
Is the connection of
compressor good? Is the
wiring sequence right? The
voltage range proper?
NO
Reconnect and retry
YES
Replace the outdoor E-box.
If the problem comes to
again, check coil resistance
of inverter compressor, is it
right?
NO
Replace inverter compressor
38
10.3
Key parts checking.
10.3.1. Compressor checking (Model: DA108X1C-20FZ3 for 9k; DA150S1C-20FZ for 12k).
Measure the resistance value of each winding by using the multi-meter.
Position
Resistance Value
Blue - Red
0.71Ω (20℃) for DA108X1C-20FZ3;
Blue - Black
0.95Ω (20℃)for DA150S1C-20FZ.
Red - Blue
10.3.2 Step Motor (Model: MP2835 for 9k; MP2423B for 12k).
Measure the resistance value of each winding by using the multi-meter.
Position
Resistance Value
Blue - Red
Pink - Orange
200Ω±7% (25℃)
Pink - Yellow
Yellow - Red
39
10.3.3 Temperature Sensors.
Room temp.(T1) sensor,
Indoor coil temp.(T2) sensor,
Outdoor coil temp.(T3) sensor,
Outdoor ambient temp.(T4) sensor,
Compressor exhaust temp.(Te) sensor.
Measure the resistance value of each winding by using the multi-meter.
Some frequently-used R-T data for T1,T2,T3 and T4 sensor:
Temperature (℃)
5
10
15
20
25
30
40
50
60
Resistance Value (KΩ)
26.9
20.7
16.1
12.6
10
8
5.2
3.5
2.4
Some frequently-used R-T data for Te sensor:
Temperature (℃)
5
15
25
35
60
70
80
90
100
Resistance Value (KΩ)
141.6
88
56.1
36.6
13.8
9.7
6.9
5
3.7
KΩ
Te
T1/T2/T3/T4
℃
40
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