Daikin RXYQ-TA Series Service Manual page 251

SiUS341615E
Troubleshooting
CHECK 12
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
(1)Mount a pressure gauge on the
high pressure service port.
(2)Connect the Service Checker for
VRV systems.
Are the
characteristics of
the high pressure sensor
normal? (Make a comparison
between voltage characteristics and
gauge pressure.)
CHECK 12
YES
Is the PCB
detection pressure
normal? Make a
comparison between data on
pressure checked by the Service Checker
and the voltage characteristics.
CHECK 12
YES
Reset the operation, and restart
operation.
Are the
characteristics of the
high pressure sensor
normal?
YES
Refer to page 302.
NO
NO
NO
Troubleshooting by Error Code
Replace the high pressure sensor
(S1NPH).
Replace the outdoor unit main PCB
(A1P).
Replace the high pressure sensor
(S1NPH).
Replace the outdoor unit main PCB
(A1P).
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