Radiation Fin Thermistor Abnormality - Daikin SkyAir RZR-P Series Service Manual

SiUS281117

2.41 Radiation Fin Thermistor Abnormality

P4
Remote
Controller
Display
Applicable RZR, RZQ
Models
Method of Error
Detection by open or short circuit of the radiation fin thermistor during the compressor stops
Detection operating.
Error Decision
When open or short circuit of the radiation fin thermistor is detected during the compressor
Conditions stops operating
 Defective radiation fin thermistor
Supposed
 Defective outdoor unit PCB (A1P)
Causes
 External factor (Noise, etc.)
Troubleshooting
1. Connector and indoor unit PCB
Note:
CHECK 5
160
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Disconnect the connector (∗1)
on inverter PCB, then check
the thermistor resistance at
the ordinary temperature.
CHECK 5
Is it normal?
YES
Error is displayed again.
YES
Connector for radiation fin thermistor
X111A
Refer to P.177, 178.
NO
NO
PCB
A1P
Troubleshooting by Remote Controller
Replace the outdoor unit
inverter PCB.
Replace the outdoor unit
inverter PCB.
Continue the operation.
Service Diagnosis