3.25 " J3 " Outdoor Unit; J3" Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R3, R31~33T) - Daikin VRV II RXYQ5MATL Service Manual

Si39-504

3.25 " J3 " Outdoor Unit:

Thermistor (R3, R31~33T)
J3
Remote
Controller
Display
Applicable RXYQ5MA~48MA
Models
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
Supposed
Causes
Troubleshooting
The alarm indicator is displayed when the fan is being used also.
Note: 5 HP class ··· R3T
8~12 HP class ··· R31T, R32T
14, 16Hp class ··· R31T, R32T and R33T
∗ Refer to "Thermistor Resistance / Temperature Characteristics" table on P300.
Troubleshooting
Malfunction of Discharge Pipe
Defect of thermistor (R31T, R32T or R33T) for outdoor unit discharge pipe
Defect of outdoor unit PC board (A1P)
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Connector
is connected to X34A
of outdoor unit
PC board
(A1P).
YES
Resistance
is normal when
measured after
disconnecting the thermistor
R31, 32T or R33T from the
outdoor unit PC board.
(3.5kΩ~
400kΩ)
YES
Troubleshooting by Indication on the Remote Controller
NO
NO
Connect the connector and turn on
again.
Replace the thermistor (R31, 32T
or R33T)
Replace outdoor unit PC board
(A1P).
(V3072)
199