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

Troubleshooting by Remote Controller Display / LED Display
5.35 "P4" Malfunction of Radiator Fin Temperature
Thermistor
P4
Remote
Controller
Display
Applicable RZQ(S)71~140
Models
Method of Detection by open or short circuit of the radiator fin temperature thermistor during the
compressor stops operating.
Malfunction
Detection
Malfunction When open or short circuit of the radiator fin temperature thermistor is detected during the
Decision compressor stops operating
Conditions
Supposed
Causes
Troubleshooting
* Refer to P228~229 for "Thermistor temperature/Resistance characteristics".
210
Faulty radiator fin temperature thermistor
Faulty outdoor unit PC board
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Check LED on the
outdoor unit PC board.
Does the radiator
fin temperature thermistor
malfunction?
YES
Disconnect the connector
from (∗) on inverter PC
board, then check the
thermistor resistance at the
ordinary temperature.
Normal?
(Note)
YES
Is reset possible?
YES
Reset
(∗) Connector number
RZQ71~140C7,
RZQS71~140C7 (1φ),
NO
Probe other factors than the malfunction.
NO
Replace the outdoor PC board
(A2P).
NO
Replace the outdoor PC board
(A2P).
X111A
SiBE28-804
Troubleshooting