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Troubleshooting by Remote Controller
Si20-701_B
161
Refer to P.464.
Refer to P.475.
Are
the
characteristics of
the outdoor unit
intermediate
thermistor
normal?
YES
YES
High pressure is too
high.
YES
NO
YES
Replace the high
pressure switch.
NO
Replace the
indoor unit
intermediate heat
exchanger
thermistor.
NO
Replace the
outdoor unit
intermediate heat
exchanger
thermistor.
Turn the power ON and
restart.
"
H3
" is
displayed?
[In cooling]
[In heating]
CHECK 4
CHECK 10
NO
Replace the
outdoor unit
PCB.
If error is
displayed again,
replace the
inverter PCB.
Are
the
characteristics of
the indoor unit
intermediate
thermistor
normal?
A
CHECK 4
CHECK 10