P4" Malfunction Of Radiator Fin Temperature Thermistor - Daikin ESIE13-02 Service Manual

ESIE13-02

"P4" Malfunction of Radiator Fin Temperature Thermistor

4.18
P4
Remote controller
display
Method of Detection by open or short circuit of the radiator fin temperature thermistor during the compressor
malfunction stops operating.
detection
Malfunction When open or short circuit of the radiator fin temperature thermistor is detected during the compressor
decision conditions stops operating
Supposed causes


Troubleshooting
Disconnect the connector
from X111A on inverter PC
board, then check the
thermistor resistance at the
ordinary temperature.
(*) See also "Check No.4 - Resistance Conversion Table (Ambient, Coil, Fin)" on page 153.
Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
occurred.
Faulty radiator fin temperature thermistor
Faulty outdoor unit PC board
Check LED on the
outdoor unit PC board.
Does the radiator
NO
fin temperature thermistor
malfunction?
YES
Normal? NO
(*)
YES
NO
Is reset possible?
YES
Reset
Probe other factors than the malfunction.
* Replace the inverter PC board (A2P) ERHQ***W1* / ERLQ***W1*
* Replace the outdoor PC board (A1P) ERHQ***V3* / ERLQ***V3*
* Replace the outdoor PC board (A1P) ERHQ***V3* / ERLQ***V3*
* Replace the inverter PC board (A2P) ERHQ***W1* / ERLQ***W1*
137
Error Codes: Outdoor Units
Part 4 – Troubleshooting
4
3
4 4
5