Daikin ALTHERMA HT EKBUHAA6 V3 - J3 Indoor Unit: Malfunction of Discharge Pipe Thermistor (R6 T)

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