J3" Indoor Unit: Malfunction Of Discharge Pipe Thermistor (R6T) - Daikin ALTHERMA HT ERSQ 011 AA Service Manual

Troubleshooting by Indication on the Remote Controller
3.27 "J3 " Indoor Unit: Malfunction of Discharge Pipe Thermistor
(R6T)
J3
Remote Control
Display
Subcode 46
Applicable Models All indoor units
Method of
Malfunction is detected from the temperature detected by discharge pipe temperature thermistor.
Malfunction
Detection
Malfunction When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.
Decision Conditions
 Defect of thermistor (R6T) for indoor unit discharge pipe
Supposed Causes
 Defect of indoor unit PC board (A4P)
Troubleshooting
 Refer to thermistor resistance / temperature characteristics table on P252.
178
Be sure to turn off power switch before connecting or disconnecting connector,
otherwise parts may be damaged.
Caution
Connector
is connected to
NO
X12A [1,2] of indoor unit
PC board
(A4P).
YES
Resistance
is normal when
measured after
NO
disconnecting the
thermistor R6T from the
indoor unit PC board .
(5.0k ~640k )
YES
Bad wire connection
value < -20°C
Faulty thermistor
value > 165°C
ESIE09-08A
Connect the thermistor and turn
on again.
Replace the thermistor (R6T).
Replace indoor unit PC board
(A4P).
Troubleshooting