Daikin REYQ-TA Series Service Manual page 228

Troubleshooting by Error Code
∗1. Make a comparison between voltage measured by the pressure sensor and that read by the
Note:
CHECK 4
CHECK 12
215
pressure and
low pressure checked
by the service checker the
same as the actual measured
values of the high and
low pressure
CHECK 4
Is the power transistor
pressure gauge.
(The pressure sensor makes measurement of voltage at its connector block to convert it to
pressure. CHECK 12 )
Refer to page 278.
Refer to page 285.
A
Are
the high
NO
sensors?
YES
NO
normal?
YES
SiUS371614E
Replace the outdoor unit main
PCB (A1P).
Replace the inverter PCB.
REYQ72TA: A3P
REYQ96-168TA: A3P, A6P
Replace the compressor.
REYQ72TA: M1C
REYQ96-168TA: M1C, M2C
Service Diagnosis