26
Indoor unit display
LED STATUS
P3
Compressor current protection
The trouble shooting is same with one of outdoor unit P3 protection.
8.4.1 Outdoor unit trouble shooting
Outdoor unit display
LED STATUS
E0
EEPROM error
Outdoor unit display
LED STATUS
E1
No 1 Indoor units pipe temp. sensor or connector of pipe temp. sensor is
defective
Circuit or software error on indoor
PCB
Replace indoor PCB
YES
Does
compressor
operate?
Is the connection
good?
Is
refrigerant
circulation
volume normal?
NO
NO
Charge refrigerant
Is abnormality the
same after gas
charging?
NO
Check refrigerant system (such as
clogging of capillary, etc)
Reconnect and retest.
NO
YES
Is
protector
normal?
Replace the protector.
NO
YES
Check the outdoor
main PCB. Is there
some problem?
Replace the outdoor PCB.
YES
