Daikin RXYQ-TA Series, Service Manual

Page: 242 / 337

Troubleshooting by Error Code SiUS341615E
229 Service Diagnosis
Troubleshooting
Note:
∗
1. Thermistors
Refer to page 293.
Refer to page 299.
NO
Is the
“temperature”
checked by the
Service Checker same as
the measurement of the
temperature?
NO
Replace the relevant thermistor.
Replace the outdoor unit main
PCB (A1P).
YES
YES
Service Checker
Connect the Service Checker, and then make a
comparison between “discharge pipe temperature” (or
“compressor surface temperature” and “low pressure”
checked by the Service Checker and the
measurements of discharge pipe temperature (or
“compressor surface temperature.”)
Connect the Service Checker.
Reset the system operation,
and then restart it.
Are the characteristics
of the discharge pipe and
compressor body thermistors
normal? (
∗
1)
• All thermistors are normal, and temperature detection
with the outdoor unit main PCB is also normal.
• The discharge pipe temperature (or compressor surface
temperature) has really become high.
CHECK 3 : Eliminate the causes of superheat operation.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
CHECK 11
Applicable
Thermistor
RXYQ72TA RXYQ96/120TA RXYQ144/168TA
Electric
symbol
Connector
Electric
symbol
Connector
Electric
symbol
Connector
Discharge pipe
(M1C) thermistor
R21T X29A R21T
X29A
(Group
connector)
R21T
X29A
(Group
connector)
Discharge pipe
(M2C) thermistor
— — — R22T
Compressor body
thermistor
— — R8T —
CHECK 3
CHECK 11