Troubleshooting by Remote Controller
SiBE281013
122
Service Diagnosis
Troubleshooting
Refer to P.168.
Refer to P.174.
Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
CHECK 9
Replace the outdoor unit PCB
(A2P).
If error is displayed again,
replace the inverter PCB (A1P).
NO
YES
NO
YES
NO
YES
YES
Open the stop valve.
Replace the indoor unit
intermediate heat exchanger
thermistor.
Replace the high pressure
switch with no continuity.
Is the stop valve open?
NO
YES
Is there continuity in the
high pressure switch?
Replace the connecting line.
Replace the outdoor unit
intermediate heat exchanger
thermistor.
NO
NO
YES
NO
[In cooling]
[In heating]
Is there continuity in the
high pressure switch
connecting line?
NO
Are the
connection of the
connector on PCB and the
connection to the switch
unit normal?
YES
Correctly connect.
Turn the power ON and restart.
Are the characteristics
of the outdoor unit
intermediate thermistor
normal?
After turning OFF the power and
stopping the compressor for 10
minutes, check the items below.
High pressure is too high.
CHECK 2
YES
Replace the high pressure
switch.
"
H3
" is displayed?
Are the
characteristics of the
indoor unit intermediate
thermistor normal?
CHECK 2
CHECK 9
