Reactor Temperature Abnormality - Daikin VRV S RXQ4/5ARV1 Service Manual

Troubleshooting by Error Code

5.51 Reactor Temperature Abnormality

Applicable RXMQ8AR
Models
P3
Error Code
Method of Error Detect according to the value detected with the reactor surface thermistor.
Detection
Error Decision
When the system is in operation and the thermistor causes wiring disconnection or short circuit
Conditions in it.
Supposed
 Defective connection of thermistor
Causes  Defective reactor surface thermistor
 Defective inverter PCB
Troubleshooting
288
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Make measurement of
resistance of the radiation
fin thermistor.
Is the
resistance of the
thermistor normal?
YES
Turn ON the
power supply.
Does the error
recur?
NO
NO
YES
SiAF332111E
Replace the inverter PCB (A3P).
Replace the inverter PCB (A3P).
Continue operation.
Part 6 Service Diagnosis