Daikin R71FUV1 Service Manual page 208

Troubleshooting by Remote Controller
Troubleshooting
Caution
Turn the power supply
OFF, and turn the power
supply ON again.
Return to
normal?
NO
Electronic
expansion valve is
connected to X21A and
X23A of outdoor
unit PCB.
YES
Normal
when coil check
(∗1) of the electronic
expansion valve coil
is checked.
YES
The
connecting
cable is short-
circuited or
disconnected.
NO
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
YES
NO
NO
YES
Si20-701_B
External factor
other than error
(for example,
noise etc.).
After connecting,
turn the power
ON and then
restart again.
Replace the
electronic
expansion valve
coil.
Replace the
connecting cable.
Replace the
outdoor unit
PCB.
201