Daikin VRVII Manual page 139

Troubleshooting
Caution
Turn power supply OFF,
and turn power supply ON
again.
Return to
normal?
NO
Electronic
expansion valve is
connected to outside
unit PCB.
YES
Normal
when coil check
(∗1) of the electronic
expansion valve is
checked.
YES
The
relay cable is
short-circuited or
disconnected.
NO
Note:
∗1. Coil check method for the electronic expansion valve
coil
Discount the electronic expansion valve from the
PCB and check the continuity between the connector
pins.
134
Troubleshooting by Indication on the Remote Controller
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
YES
NO
NO
YES
External factor
other than error
(for example,
noise etc.).
After connecting,
turn the power
OFF and then
back ON again.
Replace the
electronic
expansion valve
coil.
Replace the relay
cable.
Replace the
outside unit PCB.