Fisher FS2MIF-140AE2, FS2MIF-180AE2, FS3MIF-210AE2, FS3MIF-270AE2, FS4MIF-280AE2 Service Manual
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SERVICE MANUAL
Room Air Conditioner
DC Inverter Multi Split Outdoor units
FS2MIF-140AE2
FS2MIF-180AE2
FS3MIF-210AE2
FS3MIF-270AE2
FS4MIF-280AE2
FS4MIF-360AE2
FS5MIF-360AE2
NOTE:
Before servicing the unit, please read this at first.
Always contact with your service center if meet problem.
FI_SM_MULTI OUTDOOR FS2-3-4-5MIF---AE2_141105
1
CONTENTS
1. General information of Outdoor Units ............................................... 2
2. Features .............................................................................................. 3
3. Dimensions ......................................................................................... 4
4. Wiring Diagram ................................................................................... 7
5. Refrigeration Cycle Diagram ............................................................ 10
6. Indoor units combination ................................................................. 12
7. Installation Details ............................................................................ 14
8. Electronic control function .............................................................. 25
9. Troubleshooting ............................................................................... 31
2
1.
General information of Outdoor Units
Model name Dimension (mm) Compressor
FS2MIF-140AE2 845x320x700 DA130M1C-31FZ
FS2MIF-180AE2 845x320x700 DA150S1C-20FZ
FS3MIF-210AE2 845x320x700 DA150S1C-20FZ
FS3MIF-270AE2 900x315x860 DA250S2C-30MT
FS4MIF-280AE2 900x315x860 DA250S2C-30MT
FS4MIF-360AE2 990x345x965 TNB306FPGMC-L
FS5MIF-360AE2 990x345x965 TNB306FPGMC-L
3
2.
Features
The hydrophilic fin can improve the heating efficiency at operation mode.
It protects the valves and prevents water from dripping.
4 way valve control
It is only operated in the heating operation mode except defrosting operation.
Outdoor unit
Power relay control
Hydrophilic aluminum fin
Anti-rust cabinet
Valve protection cover
Low noise air flow system
Discharge pipe temperature protection
4
3.
Dimensions
FS2MIF-140AE2, FS2MIF-180AE2, FS3MIF-210AE2
5
FS3MIF-270AE2, FS4MIF-280AE2
6
FS4MIF-360AE2, FS5MIF-360AE2
7
4.
Wiring Diagram
FS2MIF-140AE2, FS2MIF-180AE2
8
FS3MIF-210AE2, FS3MIF-270AE2
FS4MIF-280AE2
9
FS4MIF-360AE2
FS5MIF-360AE2
10
5.
Refrigeration Cycle Diagram
5.1
Refrigeration circuit drawing of inverter 1 drive 2 type
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR)
HEAT
EXCHANGE
(CONDENSER)
Compressor
4-WAY VALVE
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T5 Discharge
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A CAPILIARY A
CHECK VALVE
CAPILIARY TUBE
EXV B CAPILIARY B
LIQUID VALVE B
GAS VALVE B
Accumulator
T2B-A
Evaporator
temp. sensor outlet
T2B-B
4.2 Refrigeration circuit drawing of inverter 1 drive 3 type
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR)
HEAT
EXCHANGE
(CONDENSER)
Compressor
4-WAY VALVE
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T5 Discharge
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A CAPILIARY A
CHECK VALVE
CAPILIARY TUBE
EXV B CAPILIARY B
LIQUID VALVE B
GAS VALVE B
EXV C CAPILIARY C
LIQUID VALVE C
GAS VALVE C
Accumulator
T2B-A
Evaporator
temp. sensor outlet
T2B-B
T2B-C
11
4.3 Refrigeration circuit drawing of inverter 1 drive 4 type
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR)
HEAT
EXCHANGE
(CONDENSER)
Compressor
4-WAY VALVE
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T5 Discharge
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A CAPILIARY A
CHECK VALVE
CAPILIARY TUBE
EXV B
CAPILIARY B
LIQUID VALVE B
GAS VALVE B
EXV C
CAPILIARY C
LIQUID VALVE C
GAS VALVE C
EXV D CAPILIARY D
LIQUID VALVE D
GAS VALVE D
Accumulator
High pressure
switch
Low pressure
switch
T2B-A
Evaporator
temp. sensor outlet
T2B-B
T2B-C
T2B-D
4.4 Refrigeration circuit drawing of inverter 1 drive 5 type
LIQUID VALVE A
GAS VALVE A
HEAT
EXCHANGE
(EVAPORATOR)
HEAT
EXCHANGE
(CONDENSER)
COOLING
HEATING
T2 Evaporator
temp. sensor
middle
T1 Room
temp. sensor
T3
Condenser
temp. sensor
T4 Ambient
temp. sensor
INDOOR OUTDOOR
EXV A CAPILIARY A
CHECK VALVE
CAPILIARY TUBE
EXV B CAPILIARY B
LIQUID VALVE B
GAS VALVE B
EXV C CAPILIARY C
LIQUID VALVE C
GAS VALVE C
EXV D CAPILIARY D
LIQUID VALVE D
GAS VALVE D
EXV E
CAPILIARY E
LIQUID VALVE E
GAS VALVE E
Compressor
4-WAY VALVE
T5 Discharge
temp. sensor
Accumulator
High pressure
switch
Low pressure
switch
T2B-A
Evaporator
temp. sensor outlet
T2B-B
T2B-C
T2B-D
T2B-E
12
6.
Indoor units combination
6.1
Indoor unit combination for FS2MIF-140AE2
Two unit
7+7 9+9
7+9 9+12
7+12
6.2
Indoor unit combination for FS2MIF-180AE2
One unit Two unit
18 7+7 9+9
7+9 9+12
7+12 9+18
7+18 12+12
6.3
Indoor unit combination for FS3MIF-210AE2
Two unit Three unit
7+18 9+12 7+7+7 7+9+12
9+18 7+7+9 9+9+9
12+12 7+7+12 9+9+12
12+18 7+9+9
6.4
Indoor unit combination for FS3MIF-270AE2
Two unit Three unit
7+18 9+12 12+12 7+7+7 7+9+9 7+12+18 9+12+12
9+18 12+18 7+7+9 7+9+12 9+9+9 9+12+18
18+18 7+7+12 7+9+18 9+9+12 12+12+12
7+7+18 7+12+12 9+9+18
13
6.5
Indoor unit combination for FS4MIF-280AE2
6.6
Indoor unit combination for FS4MIF-360AE2
Two unit Three unit Four unit
12+18 7+7+18 7+12+12 9+12+18 7+7+7+7 7+7+12+12 7+9+12+18 9+9+12+12
18+18 7+9+12 7+12+18 9+18+18 7+7+7+9 7+7+12+18 7+9+18+18 9+9+12+18
7+9+18 7+18+18 12+12+12 7+7+7+12 7+7+18+18 7+12+12+12 9+12+12+12
9+9+12 12+12+18 7+7+7+18 7+9+9+9 7+12+12+18 9+12+12+18
9+9+18 12+18+18 7+7+9+9 7+9+9+12 9+9+9+9 12+12+12+12
9+12+12 7+7+9+12 7+9+9+18 9+9+9+12 12+12+12+18
7+7+9+18 7+9+12+12 9+9+9+18
6.7
Indoor unit combination for FS5MIF-360AE2
Two Unit Three Unit
18+18 7+7+18 7+18+18 9+12+18 9+18+18
7+9+18 9+9+18 12+12+12 12+18+18
7+12+18 9+12+12 12+12+18 18+18+18
Four Unit
7+7+7+12 7+7+12+18 7+9+12+18 9+9+9+12 9+12+12+18
7+7+7+18 7+7+18+18 7+9+18+18 9+9+9+18 12+12+12+12
7+7+9+9 7+9+9+9 7+12+12+12 9+9+12+12 12+12+12+18
7+7+9+12 7+9+9+12 7+12+12+18 9+9+12+18
7+7+9+18 7+9+9+18 7+12+18+18 9+9+18+18
7+7+12+12 7+9+12+12 9+9+9+9 9+12+12+12
Five Unit
7+7+7+7+7 7+7+7+9+18 7+7+9+12+18 7+9+9+12+18 9+9+9+12+12
7+7+7+7+9 7+7+7+12+18 7+7+12+12+18 7+9+12+12+12 9+9+9+12+18
7+7+7+7+12 7+7+7+18+18 7+9+9+9+9 7+9+12+12+18 9+9+12+12+12
7+7+7+7+18 7+7+9+9+9 7+9+9+9+12 9+9+9+9+9 9+12+12+12+12
7+7+7+9+9 7+7+9+9+12 7+9+9+9+18 9+9+9+9+12 12+12+12+12+12
7+7+7+9+12 7+7+9+9+18 7+9+9+12+12 9+9+9+9+18
Two unit Three unit Four unit
7+18 12+12 18+18 7+7+12 7+9+12 9+9+9 7+7+7+7 7+7+9+9 7+9+9+12 7+7+7+7
9+18 12+18
7+7+18 7+9+18 9+9+12 7+7+7+9 7+7+9+12 7+9+12+12 7+7+7+9
7+9+9 7+12+12 9+9+18 7+7+7+12 7+7+12+12 9+9+9+9 7+7+7+12
7+12+18 9+12+12 7+7+7+18 7+9+9+9 9+9+9+12 7+7+7+18
14
7.
Installation Details
7.1 Wrench torque sheet for installation
Outside diameter Torque Additional tightening torque
mm N.cm N.cm
Ф6.35 1500(153kgf.cm) 1600(163kgf.cm)
Ф9.52 2500(255kgf.cm) 2600(265kgf.cm)
Ф12.7 3500(357kgf.cm) 3600(367kgf.cm)
7.2 Connecting the cables
The power cord of connect should be selected according to the following specifications sheet.
Rated current of appliance Nominal cross-sectional area (mm²)
FS2MIF-140AE2; FS2MIF-180AE2 3x2,5
FS3MIF-210AE2; FS3MIF-270AE2 3x2,5
FS4MIF-280AE2 3x2,5
FS4MIF-360AE2; FS5MIF-360AE2 3x4,0
The cable size and the current of the fuse or switch are determined by the maximum current indicated on
the nameplate which located on the side panel of the unit. Please refer to the nameplate before selecting
the cable, fuse and switch.
7.3 Pipe length and the elevation
Maximum piping length and height difference
1 drive 2 1 drive 3 1 drive 4 1 drive 5
Max. length for all rooms (m)
30 45 60 75
Max. length for one IU (m)
20 25 30 30
Max. height difference
between IU and OU (m)
OU higher than IU
10 10 10 10
OU lower than IU 15 15 15 15
Max. height difference between IUs (m)
10 10 10 10
Additional refrigerant charge
1 drive 2 1 drive 3 1 drive 4 1 drive 5
Chargeless pipe
length (m)
10 15 20 25
Additional
refrigerant charge
(g)
15 x (length for all
rooms - 10)
15 x (length for all
rooms - 15)
15 x (length for all
rooms - 20)
15 x (length for all
rooms - 25)
15
Caution:
● Refrigerant pipe diameter is different according to indoor unit to be connected. When using the
extension pipe, refer to the tables below.
● When refrigerant pipe diameter is different from that of outdoor unit union (for 18K indoor unit),
additional transfer connector needs to be used on outdoor unit union.
Indoor unit
Extension pipe diameter (mm/inch)
Model Pipe diameter (mm/inch)
7K9K12K
Liquid 6.35(1/4) Liquid 6.35(1/4)
Gas 9.52(3/8) Gas 9.52(3/8)
18K
Liquid 6.35(1/4) Liquid 6.35(1/4)
Gas 12.7(1/2) Gas 12.7(1/2)
Outdoor unit union diameter (mm/inch)
Indoor unit A/B/C/D
Liquid 6.35(1/4)
Gas 9.52(3/8)
7.4 Installation for the first time
Air and moisture in the refrigerant system have undesirable effects as below:
● Pressure in the system rises.
● Operating current rises.
● Cooling or heating efficiency drops.
● Moisture in the refrigerant circuit may freeze and block capillary tubing.
● Water may lead to corrosion of parts in the refrigerant system.
Therefore, the indoor units and the pipes between indoor and outdoor units must be leak tested and
evacuated to remove gas and moisture from the system.
Gas leak check (Soap water method):
Apply soap water or a liquid neutral detergent on the indoor unit connections or outdoor unit
connections by a soft brush to check for leakage of the connecting points of the piping. If bubbles come
out, the pipes have leakage.
1. Air purging with vacuum pump
16
1) Completely tighten the flare nuts of the indoor and outdoor units, confirm that both the 2-way and
3-way valves are set to the closed position.
2) Connect the charge hose with the push pin of handle lo to the 3-way valves gas service port..
3) Connect the charge hose of handle hi connection to the vacuum pump.
4) Fully open the handle Lo of the manifold valve.
5) Operate the vacuum pump to evacuate.
6) Make evacuation for 30 minutes and check whether the compound meter indicates -0.1Mpa. If
the meter does not indicate -0.1Mpa after pumping 30 minutes, it should be pumped 20 minutes more. If
the pressure can’t achieve -0.1Mpa after pumping 50 minutes, please check if there are some leakage
points.
Fully close the handle Lo valve of the manifold valve and stop the operation of the vacuum pump.
Confirm that the gauge needle does not move (approximately 5 minutes after turning off the vacuum
pump).
7) Turn the flare nut of the 3-way valves about 45° counterclockwise for 6 or 7seconds after the gas
coming out, then tighten the flare nut again. Make sure the pressure display in the pressure indicator is a
little higher than the atmosphere pressure. Then remove the charge hose from the 3 way valve.
8) Fully open the 2 way valve and 3 way valve and securely tighten the cap of the 3 way valve.
(Indoor unit)
(Liquid side)
(Gas side)
Vacuum
pump
Vacuum
pump
Lo
Hi
Handle Hi
Two-way valve
Close
Manifold valve
Compound meter
Pressure
gauge
-0.1MPa
Handle Lo
Charge hose
Charge hose
(Outdoor unit)
Close
Three-way valve
17
2. Air purging by refrigerant
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.
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 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 by loosening the flare nut on the
2-way valve approximately 45’ 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.
18
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.
3. Adding the refrigerant if the pipe length >5m
Procedure:
1). Connect the charge hose to the charging cylinder, open the 2-way valve and the 3-way valve.
Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of
the cylinder. If the refrigerant is R410A, make the cylinder bottom up to ensure the liquid charge.
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) Put the charging cylinder onto the electronic scale and record the weight.
4) Operate the air conditioner at the cooling mode.
5) Open the valves (Low side) on the charge set and charge the system with liquid refrigerant.
6).When the electronic scale displays the proper weight (refer to the table), disconnect the charge hose
from the 3-way valve’s service port immediately and turn off the air conditioner before disconnecting the
hose.
7). Mount 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.
Electronic scale
19
7.5 Adding the refrigerant after running the system for many years
Procedure:
1). Connect the charge hose to the 3-way service port, open the 2-way valve and the 3-way valve.
Connect the charge hose to the valve at the bottom of the cylinder. If the refrigerant is R410A, make the
cylinder bottom up to ensure liquid charge.
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) Put the charging cylinder onto the electronic scale and record the weight.
4) Operate the air conditioner at the cooling mode.
5) Open the valves (Low side) on the charge set and charge the system with liquid refrigerant.
6).When the electronic scale displays the proper weight (refer to the gauge and the pressure of the low
side), disconnect the charge hose from the 3-way valve’s service port immediately and turn off the air
conditioner before disconnecting the hose.
7). Mount 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.
Electronic scale
20
7.6 Re-installation while the indoor unit need to be repaired
1. Collecting the refrigerant into the outdoor unit
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). Connect the charge hose with the push pin of handle lo to the 3-way valves gas service port.
3). Air purging of the charge hose.
Open the handle Lo valve of the manifold valve slightly to purge air from the charge hose for 5 seconds
and then close it quickly.
4). Set the 2-way valve to the close position.
5). Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0.1MPa.
6). Set the 3-way valve to the closed position immediately
Do this quickly so that the gauge ends up indicating 0.3 to 0.5Mpa.
Disconnect the charge set, and tighten the 2-way and 3-way valve’s stem nuts.
Use a torque wrench to tighten the 3-way valves service port cap to a torque of 1.8 kgf.m.
Be sure to check for gas leakage.
21
2. Air purging by the refrigerant
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 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 by loosening the flare nut on the
2-way valve approximately 45’ 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.
22
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.
7.7 Re-installation while the outdoor unit need to be repaired
1. Evacuation for the whole system
Procedure:
1). Confirm that both the 2-way and 3-way valves are set to the opened position.
2). Connect the vacuum pump to 3-way valve’s service port.
3). Evacuation for approximately one hour. Confirm that the compound meter indicates -0.1Mpa.
4). 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).
5). Disconnect the charge hose from the vacuum pump.
23
2. Refrigerant charging
Procedure:
1). Connect the charge hose to the charging cylinder, open the 2-way valve and the 3-way valve
Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of
the cylinder. If the refrigerant is R410A, make the cylinder bottom up to ensure liquid charge.
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) Put the charging cylinder onto the electronic scale and record the weight.
4). 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, or can be charged with a little at
a time (approximately 150g each time) , operating the air conditioner in the cooling cycle; however, one
time is not sufficient, wait approximately 1 minute and then repeat the procedure.
5).When the electronic scale displays the proper weight, disconnect the charge hose from the 3-way
valve’s service port immediately
If the system has been charged with liquid refrigerant while operating the air conditioner, turn off the air
conditioner before disconnecting the hose.
6). 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
24
7.8. Operation temperature range
Temperature
Mode
Cooling operation Heating operation Drying operation
Room temperature 17~32°C
0~30℃
17~32°C
Outdoor temperature
0℃～50℃
-15℃～24℃ 0℃～50℃
（-15°C～50℃：For
the models with low
temperature cooling
system）
CAUTION:
1. If the air conditioner is used beyond the above conditions, certain safety protection features may
come into operation and cause the unit to operate abnormally.
2. The room relative humidity should be less than 80%. If the air conditioner operates beyond this
figure, the surface of the air conditioner may attract condensation. Please set the vertical air flow louver
to its maximum angle (vertically to the floor), and set HIGH fan mode.
3. The optimum performance will be achieved during this operating temperature zone.
25
8.
Electronic control function
8.1 Abbreviation
T1: Indoor ambient temperature
T2: Coil temperature of indoor heat exchanger middle.
T2B: Coil temperature of indoor heat exchanger outlet.
T3: Coil temperature of outdoor heat exchanger
T4: Outdoor ambient temperature
T5: Compressor discharge temperature
Ts: Setting temperature
8.2 Electric control working environment.
8.2.1 Input voltage: 198V --- 264V.
8.2.2 Input power frequency:50Hz.
8.2.3 Indoor fan normal working amp. is less than 1A.
8.2.4 Outdoor fan. Normal working amp. is less than 1.5A.
8.2.5 Four-way valve normal working amp. is less than 1A.
8.3 Outdoor unit’s digital display tube
There is a digital display tube in outdoor PCB.
Digital display tube display function
In standby , the LED displays “- -”
In compressor operation, the LED display the running frequency,
In defrosting mode, The LED displays “dF” or alternative displays between running frequency and
“dF”(each displays 0.5s)
In compressor pre-heating, The LED displays “PH” or alternative displays between running frequency
and “PH”(each displays 0.5s)
During the oil return process, The LED displays “RO” or alternative displays between running
frequency and “RO”(each displays 0.5s)
In low ambient cooling mode, the LED displays “LC” or alternative displays between running
frequency and “LC”(each displays 0.5s)
In forced cooling mode, the LED displays “FC” or alternative displays between running frequency and
“FC”(each displays 0.5s)
When PFC module protection occurs three times within 15 minutes, the LED displays “E6” or
alternative displays between running frequency and “E6”(each displays 0.5s)
In protection or malfunction, the LED displays error code or protection code.
26
8.4 Outdoor unit point check function
There is a check switch in outdoor PCB.
Press the switch N times it will display the content corresponding to No. N. After getting into the check function, it
will display No. N with 1.5s, meanwhile the low bit decimal of digit display flashing, indicated to get into the check
function display. After 1.5s, it will display the content corresponding to No. N.
the digital display tube will display the follow procedure when push SW1 each time.
Display Remark
0 Normal display
Display running frequency, running state or malfunction code
1 No. of indoor units in good connection Actual data
2 Outdoor unit running mode code Off:0,Fan only 1, Cooling:2, Heating:3, Forced cooling:4
3 A indoor unit capacity
The capacity unit is horse power. If the indoor unit is not connected, the digital
display tube will show: “――”
(7K:0.8HP, 9 K:1HP,12K:1.2HP,18K:1.5HP)
4 B indoor unit capacity
5 C indoor unit capacity
6 D indoor unit capacity
7 E indoor unit capacity
8 A Indoor unit capacity demand code
Norm value*HP
(7K:0.8HP, 9 K:1HP,12K:1.2HP,18K:1.5HP)
9 B Indoor unit capacity demand code
10 C Indoor unit capacity demand code
11 D Indoor unit capacity demand code
12 E Indoor unit capacity demand code
13 Total indoor units amendatory capacity demand code
Forced cooling:7
14 The frequency corresponding to the total indoor units
amendatory capacity demand
15 The frequency after the frequency limit
16 The frequency sending to compressor control chip
17 A indoor unit evaporator outlet temp.(T2BA)
If the temp. is lower than -9 degree, the digital display tube will show “-9”.If the
temp. is higher than 70 degree, the digital display tube will show “70”. If the indoor
unit is not connected, the digital display tube will show: “――”
18 B indoor unit evaporator outlet temp.(T2BB)
19 C indoor unit evaporator outlet temp.(T2BC)
20 D indoor unit evaporator outlet temp.(T2BD)
21 E indoor unit evaporator outlet temp.(T2BE)
22 A indoor unit room temp.(T1A) If the temp. is lower than 0 degree, the digital display tube will show “0”.If the temp.
is higher than 50 degree, the digital display tube will show “50”. If the indoor unit is
not connected, the digital display tube will show: “――”
23 B indoor unit room temp.(T1B)
24 C indoor unit room temp.(T1C)
25 D indoor unit room temp.(T1D)
26 E indoor unit room temp.(T1E)
27 A indoor unit evaporator temp.(T2A)
If the temp. is lower than -9 degree, the digital display tube will show “-9”.If the
temp. is higher than 70 degree, the digital display tube will show “70”. If the indoor
unit is not connected, the digital display tube will show: “――”
28 B indoor unit evaporator temp.(T2B)
29 C indoor unit evaporator temp.(T2C)
30 D indoor unit evaporator temp.(T2D)
31 E indoor unit evaporator temp.(T2E)
32 Condenser pipe temp.(T3)
33 Outdoor ambient temp.(T4)
34 Compressor discharge temp.(Tp) The display value is between 30~129 degree. If the temp. is lower than 30 degree, the
digital display tube will show “30”.If the temp. is higher than 99 degree, the digital
display tube will show single digit and tens digit. For example, the digital display
tube show “0.5”,it means the compressor discharge temp. is 105 degree.)
35 AD value of current
The display value is hex nu mber.
For example ,the digital di splay tube show “Cd”, it means AD value is 205.
36 AD value of voltage
27
37 EXV open angle for A indoor unit
Actual data/4.
If the value is higher than 99, the digital display tube will show single digit and tens
digit.
For example ,the digital display tube show “2.0”,it means the EXV open angle is
120×4=480p.)
38 EXV open angle for B indoor unit
39 EXV open angle for C indoor unit
40 EXV open angle for D indoor unit
41 EXV open angle for E indoor unit
42 Frequency limit symbol
Bit7 Frequency limit caused by IGBT radiator
The display value is
hex number. For
example, the digital
display tube show
2A,then Bit5=1,
Bit3=1, Bit1=1.
It means frequency
limit caused by T4,T3
and current.
Bit6
Frequency limit caused by PFC
Bit5
Frequency limit caused by T4.
Bit4
Frequency limit caused by T2.
Bit3
Frequency limit caused by T3.
Bit2
Frequency limit caused by Tp.
Bit1
Frequency limit caused by current
Bit0
Frequency limit caused by voltage
43 Average value of T2 (Sum T2 value of all indoor units)/( number of indoor units in good connection)
44 Outdoor unit fan motor state Off:0, High speed:1, Med speed:2, Low speed:3 Breeze:4, Super breeze:5
45 The last error or protection code 00 means no malfunction and protection
The following items from 8.4.1 to 8.4.5 are for the explanation of the point check functions.
8.4.1 Frequency of compressor:
Display Frequency of compressor (Hz)
30 30
-- Stand by
60 60
8.4.2 Running mode:
Display Corresponding mode
0 Off
1 Fan only
2 Cooling mode
3 Heating mode
4 Forced cooling
8.4.3 Capacity demand:
Cooling mode
T1 Ts
3
1
1
e
c
a
4
2
0
2
3
0
1
f
d
b
Capacity area a b c d e f
Norm value (N) 3 2 1.5 1 0.5 0
28
Heating mode
T1 Ts
4
0
a
3
1
-1
3
1
2
0
b
c
d
e
f
2
Capacity area a b c d e f
Norm value (N) 3 2 1.5 1 0.5 0
8.4.4 Number of indoor unit
Display Number of indoor unit
1 1
2 2
3 3
4 4
5 5
8.4.5 Opening degree of electronic expansion valve:
Actual opening degree equals the display data times 4
29
8.5 Protection
8.5.1 Three minutes delay at restart for compressor.
8.5.2 Temperature protection of compressor discharge.
When the compressor discharge temp. is getting higher, the running frequency will be limited as below rules:
----If 102°C <T5<115°C decrease the frequency to the lower level every 2 minutes till to F1.
---If T5>115°C for 10 seconds, the compressor will stop and restart till T5<90°C
8.5.4 Compressor current limit protection
If the compressor current exceeds the current limit value for 10 seconds, the compressor frequency will be
limited as below table.
Cooling mode:
Current frequency（Hz） Current limit value（A）
Frequency limit
COOL_F16 ICOOLLMT12 Decrease the frequency to COOL_F4 and run at COOL_F4 for
3 minutes.
After that, the frequency will be adjusted according to the
capacity demand and rise to the upper level every 3 minutes
(When the frequency>COOL_F4 via capacity demand).
COOL_F15 ICOOLLMT11
COOL_F14 ICOOLLMT10
COOL_F13 ICOOLLMT9
COOL_F12 ICOOLLMT8
COOL_F11 ICOOLLMT7
COOL_F10 ICOOLLMT6
COOL_F9 ICOOLLMT5
COOL_F8 ICOOLLMT4
COOL_F7 ICOOLLMT3
COOL_F6 ICOOLLMT2
COOL_F5 ICOOLLMT1
If the current frequency is lower than COOL_F4, the frequency will not be limited.
After 10s of the compressor start, if the current>ICOOL, the AC will display the failure for 30 seconds and stop. The AC
will restart 3 minutes later.
Heating mode:
Current frequency（Hz） Current limit value（A）
Frequency limit
HEAT_F16 IHEATLMT12 Decrease the frequency to HEAT_F4 and run at HEAT_F4 for
3 minutes.
After that, the frequency will be adjusted according to the
capacity demand and rise to the upper level every 3 minutes
(When the frequency>Heat_F4 via capacity demand).
HEAT_F15 IHEATLMT11
HEAT_F14 IHEATLMT10
HEAT_F13 IHEATLMT9
HEAT_F12 IHEATLMT8
HEAT_F11 IHEATLMT7
HEAT_F10 IHEATLMT6
HEAT_F9 IHEATLMT5
30
HEAT_F8 IHEATLMT4
HEAT_F7 IHEATLMT3
HEAT_F6 IHEATLMT2
HEAT_F5 IHEATLMT1
If the current frequency is lower than HEAT_F4, the frequency will not be limited.
After 10s of the compressor start, if the current>IHEAT, the AC will display the failure for 30 seconds and stop. The AC
will restart 3 minutes later.
8.5.5 Indoor / outdoor units communication protection
If the indoor units can not receive the feedback signal from the outdoor units for 2 minutes, the AC will stop
and display the failure.
8.5.6 High condenser coil temp. protection.
When T3>65°C for 3 seconds, the compressor will stop while the indoor fan and outdoor fan will continue.
When T3<52°C the protection will release and the compressor will restart after 3 minutes.
8.5.7 Outdoor unit anti-freezing protection
When T2B<0°C for 250 seconds, the indoor unit capacity demand will be zero and resume to normal when
T2B>10°C
8.5.8 Oil return
Running rules:
1. If the compressor frequency keeps lower than RET_OIL_FREQ1_ADD for RET_OIL_TIME1_ADD, the
AC will rise the frequency to RET_OIL_FREQ2_ADD for RET_OIL_TIME2_ADD and then resume to
former frequency.
2. The EXV will keep 300p while the indoor units will keep the current running mode.
If the outdoor ambient is higher than TempT4HeatLimit_ADD during the oil return, the AC quit oil return.
31
9. Troubleshooting
9.1
Indoor unit error code explanation:
PROFESSIONAL series +HEAT R series:
Display Operation lamp flash times Timer lamp Failure
E0 1 X Indoor EEPROM malfunction
E1 2 X Indoor / outdoor units communication error
E3 4 X Indoor fan speed has been out of control
E4 5 X Open or short circuit of T1 temperature sensor
E5 6 X Open or short circuit of T2 temperature sensor
F1 2 O Open or short circuit of T4 temperature sensor
F2 3 O Open or short circuit of T3 temperature sensor
F3 4 O Open or short circuit of T5 temperature sensor
F4 5 O Outdoor EEPROM parameter error
F5 6 O Outdoor fan speed out of control
F6 7 O Open or short circuit of T2B temperature sensor
P0 1
☆
IPM module protection
P1 2 ☆ Voltage protection
P4 5 ☆ Inverter compressor drive protection
P5 6 ☆ Mode conflict
P6 7 ☆
Low pressure protection(Just matching with
FS4MIF-360AE2)
O （light） X （off） ☆ （flash）
Light Commercial series(Except Console)
NO. MALFUNCTION
RUN Timer DEF Alarm
DISPLAY
DIGITAL TUBE
1
Open or short circuit of T1 temperature sensor
☆
X X X
E0
2
Open or short circuit of T2 temperature sensor X X
☆
X
E1
3
Indoor / outdoor units communication error X
☆
X X
E2
4
Full-water malfunction X X X ☆
E3
5
Indoor EEPROM malfunction
☆ ☆
X X
E4
6
IPM module protection
☆
X X O
E5
7
Open or short circuit of T3 or T4 temperature sensor or
Outdoor EEPROM malfunction
☆
O
X X
E6
8
Outdoor fan speed has been out of control
☆
O
☆
X
E7
9
Indoor fan speed has been out of control
☆
O
O X
F5
10
Voltage protection
☆
O X O
P0
12
Outdoor unit over-current protection
☆ ☆ ☆
X
P2
13
Inverter compressor drive protection
☆ ◎
X
X
P4
14
Mode conflict
☆
X O O
P5
☆ Flash(at 2.5Hz) ◎ Flash(at 0.5Hz) O light X（off）
Note: Digital display is only available for A5 duct type.
32
For Console
NO. Malfunction Running lamp Timer lamp Defrosting lamp
1 Open or short circuit of T1 temperature sensor
☆
X X
2 Open or short circuit of T2 temperature sensor X X ☆
3
Communication malfunction between indoor and outdoor
units.
X ☆ X
4 Outdoor fan speed has been out of control X ☆ O
5 Indoor EEPROM malfunction ☆ ☆ X
6 IPM module protection ☆ X ☆
7
Open or short circuit of T3 or T4 temperature sensor or
Outdoor unit EEPROM parameter error
☆ ☆ ☆
8 Voltage protection ☆ ☆ O
10 Inverter compressor drive protection ☆ ◎ X
11 Indoor fan Speed has been out of control.
☆
O ☆
12 Mode conflict ☆ X O
O(light) X(off) ☆(flash at 5Hz) ◎(flash at 0.5Hz)
33
9.2
Outdoor unit error code explanation:
Display LED STATUS
E0 Outdoor EEPROM malfunction
E2 Indoor / outdoor units communication error
E3 Communication malfunction between IPM board and outdoor main board
E4 Open or short circuit of outdoor unit temperature sensor
E5 Voltage protection
E6 PFC module protection (For FS4MIF-280AE2,FS4MIF-360AE2,FS5MIF-360AE2)
E8 Outdoor fan speed has been out of control
F1 No A Indoor unit coil outlet temperature sensor or connector of sensor is defective
F2 No B Indoor unit coil outlet temperature sensor or connector of sensor is defective
F3 No C Indoor unit coil outlet temperature sensor or connector of sensor is defective
F4 No D Indoor unit coil outlet temperature sensor or connector of sensor is defective
F5 No E Indoor unit coil outlet temperature sensor or connector of sensor is defective
P1
High pressure protection (For FS4MIF-280AE2,FS4MIF-360AE2,FS5MIF-360AE2)
P2 Low pressure protection (For FS4MIF-280AE2,FS4MIF-360AE2,FS5MIF-360AE2)
P3 Current protection of compressor
P4 Temperature protection of compressor discharge
P5 High temperature protection of condenser
P6 IPM module protection
Note: Once these error codes display, they will disappear in at least 30 seconds if the unit come back to
normal.(Except E3&E4)
34
9.3 Trouble shooting
9.3.1 For the indoor unit
9.3.1.1 Indoor EEPROM malfunction
35
9.3.1.2 Indoor / outdoor units communication error
36
Pic 2: :IPM (For dual/tri-zone)
Self-Check
Power,
Operating
Self-Check
Operating
Pic 2: :IPM (For qua-zone)
Pic 1: check the voltage of N to S
(Vs), is it moving alternately
between positive value and negative
value?
37
.
PIC3 :Main board LED when power on and unit
standby.
PIC 4: check point button,
Press 1 time for check how many indoor units are
connected
38
9.3.1.3 indoor unit fan speed has been out of control
Index 1:
1.Indoor AC fan motor
Measure the resistance value of each winding by using the tester.
For the definite value of the resistance, refer to 9.4 Main parts check.
2.Indoor DC fan motor(control chip is inside fan motor)
Measure the resistance value of each winding by using the tester. If any resistance value is zero, the fan
motor must have problems and need to be replaced.
39
For other models:
NO. Color
1 Red
2 ---
3 Black
4 White
5 Yellow
6 Blue
For console:
5
4
6
3
2
1
NO. Color
1 Red
2 ---
3 White
4 Blue
5 Yellow
6 Black
Index2:
1: Indoor AC fan motor
Power on and set the unit running in fan mode at high fan speed. After running for 15 seconds, measure the
voltage of pin1 and pin2. If the value of the voltage is less than 100V(208~240V power supply)or 50V(115V
power supply), the PCB must have problems and need to be replaced.
40
2. Indoor DC fan motor(control chip is inside fan motor)
Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor
connector. If the value of the voltage is not in the range showing in below table, the PCB must have
problems and need to be replaced.
For other models:
For console:
5
4
6
3
2
1
DC motor voltage input and output
For split type:
NO. Color Signal Voltage
1 Red Vs/Vm 280V~380V
2 --- --- ---
3 Black GND 0V
4 White Vcc 14-17.5V
5 Yellow Vsp 0~5.6V
6 Blue FG 14-17.5V
41
For Duct &
Four-way cassette (compact)
NO. Color Signal Voltage
1 Red Vs/Vm 192V~380V
2 --- --- ---
3 Black GND 0V
4 White Vcc 13.5-16.5V
5 Yellow Vsp 0~6.5V
6 Blue FG 15V
For console:
5
4
6
3
2
1
NO. Color Signal Voltage
1 Red VDC 310V
2 --- --- ---
3 White Vcc 15V
4 Blue FG 15V
5 Yellow Vsp 0-7.5V
6 Black GND 0V
42
9.3.1.4 Open or short circuit of temperature sensor.
Check the connections
between temperature
sensor and PCB. Are
the connections good?
Correct the connections.No
Yes
Yes Replace indoor or outdoor PCB.
Replace the sensor
Check the resistance value
of the sensor via Appendix 1
Is it normal?
No
9.3.1.6 Full-water malfunction
If the water-level switch
is inserted well?
No Insert the water-level switch well
If the water-level switch
is broken?
Yes Replace the water-level switch
If the water pump is
normal?
No
Replace the water pump
Yes
No
Yes
Check PCB board or replace the indoor main PCB
43
9.3.2 For the outdoor unit
9.3.2 1 Outdoor EEPROM malfunction(ODU E0)
44
9.3.2.2 Communication malfunction between IPM board and outdoor main board(ODU E3)
Communication malfunction between
IPM board and outdoor main board
Is there at least one LED in
the IPM board light?
Check the signal wire between
the IPM module and the main
board, is it connected good?
Reconnect and retry. Is
error still display?
Replace IPM board, and
then check whether the
system can run normally
Replace the electric control
box
No
No
No
No
Yes
Trouble is solved
No
Yes
Replace outdoor main
board, and then check
whether the system can run
normally
No
Yes
Yes
45
9.3.2.3 Voltage protection(ODU E5)
46
9.3.2.4 PFC module protection (ODU E6) (For FS4MIF-280AE2,FS4MIF-360AE2,FS5MIF-360AE2)
47
9.3.2.5 Outdoor unit fan speed has been out of control (E8)
Index 1:
1.Outdoor DC fan motor(control chip is inside fan motor)
Measure the resistance value of each winding by using the tester. If any resistance value is zero, the fan
motor must have problems and need to be replaced.
48
NO. Color
1 Red
2 ---
3 Black
4 White
5 Yellow
6 Blue
Index2:
1. Outdoor DC fan motor(control chip is inside fan motor)
Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor
connector. If the value of the voltage is not in the range showing in below table, the PCB must have
problems and need to be replaced.
For other models:
DC motor voltage input and output
NO. Color Signal Voltage
1 Red Vs/Vm 140V~380V
2 --- --- ---
3 Black GND 0V
4 White Vcc 13.5-16.5V
5 Yellow Vsp 0~6.5V
6 Blue FG 15V
49
9.3.2.6 High pressure protection (ODU P1) (For FS4MIF-280AE2,FS4MIF-360AE2,FS5MIF-360AE2)
High pressure protection
Judge 1: Whether the wiring
between the high pressure
switch and main control
board is connected well or
correctly
Method: Short connect the
high pressure protector
socket, check whether the
system can run normally
Yes
No
Connect it well
Replace outdoor main board
No
Replace high pressure protectorYes
Judge 2: Whether
the high pressure
protector is broken
Check whether
the refrigerant
system is ok
Judge 3: Check whether the
outdoor ambient
temperature is higher than
50℃
No
Stop the unitYes
Judge 4: Check whether the
outdoor unit is bad
ventilation
No
Make the outdoor unit ventilate wellYes
Judge 5: Check whether the
heat exchanger is dirty
Clean the heat exchangerYes
Judge 6: Check whether the
refrigerant pipe is blocked
Let the refrigerant out, then use the
high pressure nitrogen or refrigerant to
blow pipe, vacuumize and charge the
refrigerant again
Yes
50
9.3.2.7 Low pressure protection (ODU P2) (For FS4MIF-280AE2,FS4MIF-360AE2,FS5MIF-360AE2)
51
9.3.2.8 Current protection of compressor(ODU P3)
52
9.3.2.4 Temperature protection of compressor discharge(ODU P4)
Temperature protection of
compressor discharge
Check whether the
compressor discharge temp.
is more than 115°C ?
Check whether the wiring
connection is right between
compressor discharge temp.
sensor and PCB according
to wiring diagrams?
Method: Check whether the
resistance of compressor
discharge temp. sensor is
right refer to the Appendix 2
No
Yes
Yes
Trouble is solved
No
Judge: The
discharge temp.
sensor is broken
Check whether the
refrigerant is leak
Correct the wiring connection
Stop leaking and add refrigerant
Replace the compressor discharge temp. sensor
No
Yes
Replace outdoor main board
Yes
53
9.3.2.9 High temperature protection of condenser(ODU P5)
When outdoor pipe temperature is more than 65°C, the unit will stop, and unit runs again when outdoor
pipe temp. less than 52°C.
54
9.3.2.10 IPM module protection(ODU P6)
IPM module protection
Check whether the voltage range
of P-N on IPM module is normal?
DC277-356V for 1 8-27KBtu/h;
DC277-410V fo r 36KBtu/h
Yes
Yes
No
Yes
Check whether the input
power supply is correct?
208-230V, 1N, 6 0Hz
No No
Regulate it to cor re ct, then
check whether the system
can work normal ly?
Check whether the
power supply line is
connected correct ly and
tightly
Yes
Connect it corr ectly
and tightly, check ok
or not?
No
Check whether the connecting
line between main board and
the IPM module is connected
tightly
Yes
Connect it tight ly,
check ok or not?
No
No
No
Connect it well, check
ok or not?
Check whether the connecting
line of the compres sor is
connected correct ly or tightly
Replace the IPM module,
check whether the system can
work normally?
No
No
Replace the main board; check
whether the system can work
normally?
No
Replace the com pressor, check
whether the system can work
normally?
Check whether the lines
in E-part box a re
connected tigh tly
Yes
Connect it tightly ,
check ok or not?
No
No
Yes
No
Replace the br idge rectifiers
Check whether the bridge rectifiers are
normal? Use the multimeter to me asure
the resistance between each two
terminals, check whether there is the
condition that v alue of resistance is 0
Check whether the conne cting line of
every reactor is normal? If the line is
broken, the resistance of the two ports is
∞（models ex cept for M4OA-36HFN1-
Q,M4OD-28HFN1-Q, M5OC-36HFN1 Q）；Check whether the PFC module
broken (for M4OA-36HFN1 -Q,M4OD28HFN1-Q, M5OC -36HFN1-Q)
Replace the con necting line or
reactor or re place the PFC
module(for M 4OC-36HRFN1-M)
Yes
No
No
Yes
Trouble is solved
Check if the outdoor fan
runs properly or the outdoor
unit ventilation is good.
No
Check whether the resistance of
the fan motor is normal. If not,
replace the fan motor.
For other
models, r
efer to the solution of
fan speed has been out of
control malfunction . F in d ou t
the cause and have it solved.
Yes
Yes
Yes
55
9.4 Main parts check
Spec.
Indoor unit
Model FSAMI-Pro-71AE2 FSAI-Pro-91AE2 FSAI-Pro-121AE2 FSAIF-Pro-181AE2
Indoor fan motor RPG20E RPG20E RPG20E WZDK30-38G
Model FSAI-Pro-90AE1 FSAI-Pro-120AE1 FSAI-Pro-180AE1
Indoor fan motor RPG13H RPG20E RPG25
Model FSAIF-HT-91AE2 FSAIF-HT-121AE2 FSAIF-HT-181AE2
Indoor fan motor WZDK20-38G WZDK20-38G WZDK58-38G
Model 7K Duct 9K Duct 12K Duct 18K Duct
Indoor fan motor WZDK27-38GS WZDK27-38GS WZDK27-38GS YSK68-4P
Model 7K Cassette 9K Cassette 12K Cassette 18K Cassette
Indoor fan motor WZDK37-38G WZDK37-38G WZDK37-38G YDK37-4P
Model 9K Console 12K Console 18K Console
Indoor fan motor RD-280-20-8A RD-280-20-8A RD-280-20-8A
Outdoor unit
Model 1x2(14k) 1x2(18k) 1x3(27K) 1x3(21K)
Compressor DA130M1C-31FZ DA150S1C-20FZ DA250S2C-30MT DA150S1C-20FZ
Outdoor fan motor WZDK50-38G WZDK50-38G WZDK72-38G WZDK50-38G
Model 1x4(28K) 1x4(36K) 1x5(36K)
Compressor DA250S2C-30MT TNB306FPGMC-L TNB306FPGMC-L
Outdoor fan motor WZDK72-38G WZDK180-38G WZDK180-38G
56
1. Temperature sensor checking
Disconnect the temperature sensor from PCB, measure the resistance value with a tester.
Temperature Sensors.
Room temp.(T1) sensor,
Indoor coil temp.(T2) sensor,
Outdoor coil temp.(T3) sensor,
Outdoor ambient temp.(T4) sensor,
Compressor discharge temp.(T5) sensor.
Measure the resistance value of each winding by using the multi-meter.
57
Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (℃--K)
℃
K Ohm
℃
K Ohm
℃
K Ohm
℃
K Ohm
-20 115.266 20 12.6431 60 2.35774 100 0.62973
-19 108.146 21 12.0561 61 2.27249 101 0.61148
-18 101.517 22 11.5000 62 2.19073 102 0.59386
-17 96.3423 23 10.9731 63 2.11241 103 0.57683
-16 89.5865 24 10.4736 64 2.03732 104 0.56038
-15 84.2190 25 10.000 65 1.96532 105 0.54448
-14 79.3110 26 9.55074 66 1.89627 106 0.52912
-13 74.5360 27 9.12445 67 1.83003 107 0.51426
-12 70.1698 28 8.71983 68 1.76647 108 0.49989
-11 66.0898 29 8.33566 69 1.70547 109 0.48600
-10 62.2756 30 7.97078 70 1.64691 110 0.47256
-9 58.7079 31 7.62411 71 1.59068 111 0.45957
-8 56.3694 32 7.29464 72 1.53668 112 0.44699
-7 52.2438 33 6.98142 73 1.48481 113 0.43482
-6 49.3161 34 6.68355 74 1.43498 114 0.42304
-5 46.5725 35 6.40021 75 1.38703 115 0.41164
-4 44.0000 36 6.13059 76 1.34105 116 0.40060
-3 41.5878 37 5.87359 77 1.29078 117 0.38991
-2 39.8239 38 5.62961 78 1.25423 118 0.37956
-1 37.1988 39 5.39689 79 1.21330 119 0.36954
0 35.2024 40 5.17519 80 1.17393 120 0.35982
1 33.3269 41 4.96392 81 1.13604 121 0.35042
2 31.5635 42 4.76253 82 1.09958 122 0.3413
3 29.9058 43 4.57050 83 1.06448 123 0.33246
4 28.3459 44 4.38736 84 1.03069 124 0.32390
5 26.8778 45 4.21263 85 0.99815 125 0.31559
6 25.4954 46 4.04589 86 0.96681 126 0.30754
7 24.1932 47 3.88673 87 0.93662 127 0.29974
8 22.5662 48 3.73476 88 0.90753 128 0.29216
9 21.8094 49 3.58962 89 0.87950 129 0.28482
10 20.7184 50 3.45097 90 0.85248 130 0.27770
11 19.6891 51 3.31847 91 0.82643 131 0.27078
12 18.7177 52 3.19183 92 0.80132 132 0.26408
13 17.8005 53 3.07075 93 0.77709 133 0.25757
14 16.9341 54 2.95896 94 0.75373 134 0.25125
15 16.1156 55 2.84421 95 0.73119 135 0.24512
16 15.3418 56 2.73823 96 0.70944 136 0.23916
17 14.6181 57 2.63682 97 0.68844 137 0.23338
18 13.9180 58 2.53973 98 0.66818 138 0.22776
19 13.2631 59 2.44677 99 0.64862 139 0.22231
58
Appendix 2 Temperature Sensor Resistance Value Table for T5 (℃--K)
℃
K Ohm
℃
K Ohm
℃
K Ohm
℃
K Ohm
-20 542.7 20 68.66 60 13.59 100 3.702
-19 511.9 21 65.62 61 13.11 101 3.595
-18 483 22 62.73 62 12.65 102 3.492
-17 455.9 23 59.98 63 12.21 103 3.392
-16 430.5 24 57.37 64 11.79 104 3.296
-15 406.7 25 54.89 65 11.38 105 3.203
-14 384.3 26 52.53 66 10.99 106 3.113
-13 363.3 27 50.28 67 10.61 107 3.025
-12 343.6 28 48.14 68 10.25 108 2.941
-11 325.1 29 46.11 69 9.902 109 2.86
-10 307.7 30 44.17 70 9.569 110 2.781
-9 291.3 31 42.33 71 9.248 111 2.704
-8 275.9 32 40.57 72 8.94 112 2.63
-7 261.4 33 38.89 73 8.643 113 2.559
-6 247.8 34 37.3 74 8.358 114 2.489
-5 234.9 35 35.78 75 8.084 115 2.422
-4 222.8 36 34.32 76 7.82 116 2.357
-3 211.4 37 32.94 77 7.566 117 2.294
-2 200.7 38 31.62 78 7.321 118 2.233
-1 190.5 39 30.36 79 7.086 119 2.174
0 180.9 40 29.15 80 6.859 120 2.117
1 171.9 41 28 81 6.641 121 2.061
2 163.3 42 26.9 82 6.43 122 2.007
3 155.2 43 25.86 83 6.228 123 1.955
4 147.6 44 24.85 84 6.033 124 1.905
5 140.4 45 23.89 85 5.844 125 1.856
6 133.5 46 22.89 86 5.663 126 1.808
7 127.1 47 22.1 87 5.488 127 1.762
8 121 48 21.26 88 5.32 128 1.717
9 115.2 49 20.46 89 5.157 129 1.674
10 109.8 50 19.69 90 5 130 1.632
11 104.6 51 18.96 91 4.849
12 99.69 52 18.26 92 4.703
13 95.05 53 17.58 93 4.562
14 90.66 54 16.94 94 4.426
15 86.49 55 16.32 95 4.294 B(25/50)=3950K
16 82.54 56 15.73 96 4.167
17 78.79 57 15.16 97 4.045 R(90℃)=5KΩ±3%
18 75.24 58 14.62 98 3.927
19 71.86 59 14.09 99 3.812
59
2.Compressor checking
Measure the resistance value of each winding by using the tester.
Position Resistance Value
DA130M1C-31FZ DA150S1C-20FZ DA250S2C-30MT TNB306FPGMC-L
Blue - Red
1.77Ω(20℃) 0.95Ω(20℃) 0.55Ω(20℃) 0.53Ω(20℃)
60
3. IPM continuity check
Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital
tester to measure the resistance between P and UVWN; UVW and N.
Digital tester
Normal resistance value
Digital tester Normal resistance value
(+)Red (-)Black
∞
(Several MΩ)
(+)Red (-)Black
∞
(Several MΩ)
P
N
U
N
U
V
V
W
W
(+)Red
4: Indoor AC Fan Motor
Measure the resistance value of each winding by using the tester.
Posi
tion
Resistance Value
RPG20D(
Weilng)
RPG28D(T
ongDe)
RPG28D(
Dayang)
RPG20E(T
ongDe)
RPG20E(
Weilng)
RPG13H(
Weilng)
RPG25(T
ongDe)
YSK68-4P(
Weilng)
YDK37
-4P
Blac
k -
Red
398Ω±8%
(20℃)
255Ω±8%
(20℃)
271.3Ω±8
% (20℃)
415Ω±8%
(20℃)
387Ω±8%
(20℃)
575Ω±8%
(20℃)
295Ω±8%
(20℃)
285.8Ω±8
% (20℃)
258.7
Ω±8%
(20℃)
Red -
Yello
w
345Ω±8%
(20℃)
335Ω±8%
(20℃)
347.8Ω±8
% (20℃)
396Ω±8%
(20℃)
378Ω±8%
(20℃)
558Ω±8%
(20℃)
420Ω±8%
(20℃)
178.5Ω±8
% (20℃)
189.7
Ω±8%
(20℃)
Yello
w -
Blue
345Ω±8%
(20℃)
335Ω±8%
(20℃)
347.8Ω±8
% (20℃)
396Ω±8%
(20℃)
378Ω±8%
(20℃)
558Ω±8%
(20℃)
420Ω±8%
(20℃)
178.5Ω±8
% (20℃)
189.7
Ω±8%
(20℃)
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