Daikin RWEYQ28PY1 [220/342] Malfunction of heat exchanger gas pipe thermistor r4t

Daikin RWEYQ30PY1 [220/342] Malfunction of heat exchanger gas pipe thermistor r4t
Si30-813 Troubleshooting by Indication on the Remote Controller
Troubleshooting 209
2.26
J4
Malfunction of Heat Exchanger Gas Pipe Thermistor
(R4T)
Remote
Controller
Display
J4
Applicable
Models
Outside unit
RWEYQ8P, 10P
Method of
Malfunction
Detection
Malfunction is detected according to the temperature detected by heat exchanger gas pipe
thermistor.
Malfunction
Decision
Conditions
When the heat exchanger gas pipe thermistor is short circuited or open.
Supposed
Causes
Faulty heat exchanger gas pipe thermistor (R4T)
Faulty outside unit PC board
Troubleshooting
1: Refer to thermistor resistance / temperature characteristics table on P.309.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is the
resistance
measured after
removing the thermistor
(R4T) from outside unit PC
board normal?
(3.5 k to
360 k)
1
Replace outside unit PC board
(A1P).
Connect the connector and
operate unit again.
NO
NO
Replace thermistor (R4T).
YES
YES
Is
the connector
for heat exchanger
gas pipe thermistor
connected to X37A on
outside unit PC
board (A1P)?

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