J3" Indoor Unit: Malfunction Of Discharge Pipe Thermistor (R6T) - Daikin ALTHERMA HT 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
All indoor units
Applicable
Models
Malfunction is detected from the temperature detected by discharge pipe temperature
Method of
thermistor.
Malfunction
Detection
When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.
Malfunction
Decision
Conditions
 Defect of thermistor (R6T) for indoor unit discharge pipe
Supposed
 Defect of indoor unit PC board (A4P)
Causes
Troubleshooting
 Refer to thermistor resistance / temperature characteristics table on P240.
168
Be sure to turn off power switch before connect or disconnect
connector, or parts damage may be occured.
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
ESIE09-08B
Connect the thermistor and turn
on again.
Replace the thermistor (R6T).
Replace indoor unit PC board
(A4P).
Troubleshooting