SANG TAC-12CHSA/JAI, Service Manual

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Air Conditioner Service Manual
40
1
0
.5.5 Display EA
Cause:
Current sensor fault
Solution:
1)
Check for refrigerant leakage, to find the leakage point and recharge the refrigerant.
2)
Current sampling circuit broken on the outdoor PCB and replace outdoor PCB.
1
0
.5.6 Display E9
（
first display P0 or P9
）
Cause: Outdoor PCB drive circuit broken.
Solution:
Re-energize and check the protection code on display. Firstly display P0.
1)
If this code is displayed when the compressor is started for several seconds or even not started, check
the compressor connection for correctness, if no insert wrong, replace outdoor PCB.
2)
Check if the outdoor module is tightly installed onto the radiating fins and if the silicone is applied
evenly, fix the screws again if loose.
3)
Check the system pressure, recharge refrigerant if the pressure is low, and discharge some
refrigerant if the pressure is too high.
4)
Check the outdoor ventilation and if there is any obstruction that affects the normal radiating of the air
conditioner, and installation again.
5)
If the above inspections are normal, but the fault remains unsolved, please replace the outdoor PCB.
Re-energize and check the protection code on display. Firstly display P9.
a) Check the U,V, W connection, if is correctness or loose please connect again.
b) If this code is displayed when the compressor is started for several seconds or even not started,
check the compressor connection for correctness, if no insert wrong, replace outdoor PCB.
c) When the compressor is restarted immediately after stop, this might also cause P9 protection
because the cooling system is not stable, try starting the air conditioner again after a longer period
of stop.
1
0
.5.7 Display EU.
Cause:
Voltage sensor fault.
Solution: Please replace outdoor PCB.
1
0
.5.8 Display EE
Cause: EEPROM fault
Solution: Shut down power supply and reenergize it, if the fault remains there, check the EEPROM
installation, if no problem, please replace indoor PCB or
The wiring U,V,W are closed as red,
white and blue respectively.
Heat radiation problem easily happened
while the screw is not fixed tightly.