Air Conditioner User Manual

4. Service procedures
1
2
3
4
Section
SM830082
IV - 10
2) Symptom: LCD on the remote controller displays “CHECK E01”. (Unusual
communication between remote controller and indoor unit.)
OK
No
No
Yes
Yes
NG
2096_THS_I
Start
Remote controller judges itself
with self-diagnostic functions
Replace the remote controller.
Correct the wiring.
Open the inspection pin.
Is there an open or a contact
defect in the No. 1 line of the
remote controller?
No
Yes
Yes
Is there 230 -208 V AC between
U1 and U2 of terminal plate?
Mis-wiring between the power
supply line and indoor/ outdoor
unit operation lines.
Correct the wiring, and pull out the
socket connected to the OC plug
to replace with the EMG plug.
Is the indoor unit PCB’s inspection
pin shorted?
Replace the indoor
unit PCB .
3) Symptom: LCD on the remote controller displays “CHECK E02”. (Unusual
communication between remote controller and indoor unit)
OK
NG
2097_M_I
Start
Replace the remote controller.
Remote controller judges itself with
self-diagnostic functions.
Replace the indoor unit PCB.