14
Room Air Conditioner
Control Locations
Self-Diagnosis
FUNCTION:
If the unit has a malfunction, a green OPERATION LED located on the Display PCB used by the unit to
indicate the errors.
USE:
If the customer has to call the service center about a service conern, he can be very clear about the
problem by referring the user's manual the customer. This way they can clearly define the problem and
obtain quick service as the techinican will be fylly prepared with the correct tools and parts.
Here are some of the problems defined below for which the LED indicates by flashing number of times
the error has been reconrded against it.
These error codes are the mentioned in the table below:
ON
Normal
OFF
No power / failed board
Fault Codes
CH 01
Indoor Air Thermistor Error
CH 02
Indoor Coil Thermistor Error
CH 03
Outdoor Air Thermistor Error (PTHP Only)
CH 04
Outdoor Coil Thermistor Error (PTHP Only)
CH 05
Mode Error
CH 06
Setpoint Error
CH 07
Bad Thermistor Wiring
