J7" Outdoor Unit: Malfunction Of Thermistor (R7T) For Outdoor Unit Liquid Pipe; Pipe - Daikin ERSQ 011AAV1 Service Manual

ESIE09-08
3.30 "J7" Outdoor Unit: Malfunction of Thermistor (R7T) for
Outdoor Unit Liquid Pipe
J7
Remote Control
Display
Applicable
ER*Q 011~016*
Models
Method of
Malfunction is detected from the temperature detected by the liquid pipe thermistor.
Malfunction
Detection
Malfunction
When a short circuit or an open circuit in the heat exchange thermistor is detected.
Decision
Conditions
Supposed
Causes
Troubleshooting
∗ Refer to thermistor resistance / temperature characteristics table on P229.
Troubleshooting
Defect of thermistor (R7T) for outdoor unit liquid pipe
Defect of outdoor unit PC board (A1P)
Be sure to turn off power switch before connecting or disconnecting connector,
otherwise parts may be damaged.
Caution
Connector
is connected
NO
to X13A of outdoor unit
PC board (A1P)
YES
Resistance
is normal when
measured after
NO
disconnecting the thermistor
(R7T) from the outdoor
unit PC board.
(3.5kW~360kW)
YES
Troubleshooting by Indication on the Remote Controller
Connect the thermistor and turn on again.
Replace the thermistor (R7T).
Replace outdoor unit PC board (A1P).
(V3074)
169