2) Symptom: LCD on the remote controller displays “CHECK E01”.
(Unusual communication between remote controller and indoor unit.)
3) Symptom: LCD on the remote controller displays “CHECK E02”. (Unusual communication between
remote controller and indoor unit)
OK
No
No
No
Yes
Yes
Yes
NG
1905_M_I
Start
Remote controller judges itself
with self-diagnostic functions
Replace the remote controller.
Correct the wiring.
Correct the setting.
Open the forced OPR pin.
Is there an open or a contact
defect in the No. 1 line of the
remote controller?
No
Yes
Yes
Is the indoor forced
OPR pin shorted?
Replace the indoor
.
OK
No
NG
Yes
0334_M_I
S
TART
Repair the wiring.
Replace the remote controller.
Is the No. 1 line wire (red) for the
remote controller connected to
another line (2 or 3) or are No. 1
and No. 3 (black) wired reversed?
Replace the indoor unit PCB.
32
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