J5" Malfunction Of Thermistor (R3T, R5T) For Suction Pipe 1, 2 - Daikin VRV III-S RXYMQ36 48PVJU Service Manual

Troubleshooting by Indication on the Remote Controller
J5
3.23 " " Malfunction of Thermistor (R3T, R5T) for Suction Pipe
1, 2
J5
Remote
Controller
Display
Applicable
RXYMQ36 · 48PVJU
Models
Method of Malfunction is detected from the temperature detected by the thermistor for suction pipe 1, 2.
Malfunction
Detection
Malfunction
When a short circuit or an open circuit in the thermistor for suction pipe 1, 2 are detected
Decision
Conditions
 Defect of thermistor (R3T or R5T) for outdoor unit suction pipe
Supposed
 Defect of outdoor unit PCB (A1P)
Causes
 Defect of thermistor connection
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting the connector, or parts may be damaged.
Confirm which thermistor is abnormal
using outdoor unit "monitor mode".
(Refer to P.105, 106)
connected to X12A of outdoor
measured after disconnecting
the thermistor (R3T or R5T)
from the outdoor unit PCB.
∗ Refer to "Thermistor Resistance / Temperature Characteristics" table on P.241.
148
Connector is
NO
unit PCB. (A1P)
YES
Resistance
is normal when
NO
(3.5kW to
360kW)
YES
Connect the connector and turn
on again.
Replace the thermistor (R3T or
R5T).
Replace the outdoor unit PCB
(A1P).
Troubleshooting
SiUS34-907