Daikin R71FUV1 Service Manual page 168

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