Air Conditioner Service Manual
42
8.3.11 Display EC
Reason:
The signal communication fault between power module and IPM module.
Solution:
Please replace the outdoor PCB.
8.3.12 Display EP
Reason:
The compressor top temperature high or the sensor fault.
Solution:
Check and replace the sensor or add some gas.
8.3.13 Display PA
Reason:
Two or three machine modes collide.
Solution:
Check whether one machine run in cooling another machine run in heating or other model.
8.3.14
Display D3
.
Reason:
Water full (This only apply to cassette or duct type)
Solution:
Check and let water drain.
8.3.15
Display CL
Cause:
Air filter duty, the unit operation Cumulative time 500 hours, the controller will confirmation the filter
dirty and display CL.
Solution: Clean the air filter then cut off the power and supply again.