Outdoor Unit Liquid Pipe - Daikin ALTHERMA HT ERSQ 011 AA Service Manual

Troubleshooting by Indication on the Remote Controller
3.31 "J7 " Outdoor Unit: Malfunction of Thermistor (R7T) for

Outdoor Unit Liquid Pipe

J7
Remote Control
Display
Applicable Models ER*Q 011~016*
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
 Defect of thermistor (R7T) for outdoor unit liquid pipe
Supposed Causes
 Defect of outdoor unit PC board (A1P)
Troubleshooting
 Refer to thermistor resistance / temperature characteristics table on P251.
182
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
ESIE09-08A
Connect the thermistor and turn on again.
Replace the thermistor (R7T).
Replace outdoor unit PC board (A1P).
(V3074)
Troubleshooting