Daikin ERQ, Service Manual

Page: 205 / 260

ESIE09-05 Troubleshooting by Indication on the Remote Controller
Troubleshooting 195
3.26 “
J6
” Outdoor Unit: Malfunction of Thermistor (R6T)
Remote
Controller
Display
J6
Applicable
Models
ERQ 125 ~ 200 A7V1
Method of
Malfunction
Detection
Malfunction is detected from the temperature detected by the heat exchanger thermistor.
Malfunction
Decision
Conditions
When a short circuit or an open circuit in the heat exchange thermistor is detected.
Supposed
Causes
„ Defect of thermistor (R6T) for outdoor unit heat exchanger
„ Defect of outdoor unit PC board (A1P)
Troubleshooting
∗
Refer to thermistor resistance / temperature characteristics table on P232.
(V3074)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Resistance
is normal when
measured after
disconnecting the thermistor
(R4T) from the outdoor
unit PC board.
(3.5k
Ω
~
360k
Ω
)
Replace outdoor unit PC board
(A1P).
Connect the thermistor and turn
on again.
NO
NO
Replace the thermistor (R6T).
YES
YES
Connector
is connected to X13A of
outdoor unit PC board
(A1P).
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