Radiation Fin Temperature Rise Abnormality - Daikin VRV S RXQ4/5ARV1 Service Manual

Troubleshooting by Error Code

5.43 Radiation Fin Temperature Rise Abnormality

5.43.1 Radiation Fin Temperature Rise Abnormality (4/5 HP Models)
Applicable
RXQ4/5AR
Models
L4
Error Code
Method of Error The radiation fin temperature is detected by the radiation fin thermistor.
Detection
Error Decision
The radiation fin temperature exceeds a certain temperature.
Conditions
Supposed
 Activation of radiation fin thermistor
Causes  Defective outdoor unit main PCB
 Defective radiation fin thermistor
Troubleshooting
268
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Is the radiation fin
temperature greater than the
designed temperature?
NO
Does the
connector X111A of fin
thermistor connect to the
outdoor unit main PCB
correctly?
YES
Connect to the power and then press
the INSPECTION/TEST button on
remote controller.
Does the remote
controller display error
code P4?
NO
When the unit starts
operating, is the error code L4
displayed again?
NO
YES
NO
YES
YES
SiAF332111E
Defective radiation from the power
unit
• Blocked air suction port
• Stained radiation fin
• High outdoor air temperature
Connect the connector correctly.
Eliminate P4 error.
Replace the outdoor unit
main PCB (A1P).
Keep operating.
Part 6 Service Diagnosis