Daikin VRVII Manual page 103

Troubleshooting
Caution
Are
the high
pressure switch
connectors connected
to the outdoor
main PCB
(∗1)
Contact
pressure switch
or pressure switch
is open.
Operation is
normal when turned
ON again by remote
controller.
Note:
∗1. Actuation of high pressure switch
• The outdoor unit PCB connector is disconnected.
• Is the outdoor unit heat exchanger dirty?
• Defective outdoor unit fan
• Is the refrigerant overcharged?
• Defective high pressure sensor
98
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.
NO
YES
YES
NO
YES
NO
Connect the
connector and
operate again.
Actuation of high
pressure switch.
(∗1)
There was an
instantaneous
power failure or
a past safety
device actuated.
Re-check the
refrigerant
system.
Replace the
outdoor unit
PCB.