Daikin VRV Inverter K Series - Outdoor Unit: Malfunction of Thermistor (R4 T) for Suction Pipe; Outdoor Unit: Malfunction of Thermistor (R2 T) for Heat Exchanger

SiE-05C Troubleshooting
Troubleshooting Inverter K Series 145
3.21 Outdoor Unit: Malfunction of Thermistor (R4T) for Suction Pipe
Remote Controller
Display
JJ
JJ
55
55
Supposed Causes  Defect of thermistor (R4T) for outdoor unit suction pipe
 Defect of outdoor unit PC board (A1P)
Troubleshooting
The alarm indicator is displayed when the fan is being used also.
3.22 Outdoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger
Remote Controller
Display
JJ
JJ
66
66
Supposed Causes  Defect of thermistor (R2T) for outdoor unit coil
 Defect of outdoor unit PC board (A1P)
Troubleshooting
The alarm indicator is displayed when the fan is being used also.
(VF047)
Resistance
is normal when
measured after
disconnecting the thermistor
(R4T) from the indoor unit PC
board. (3.5kΩ ~
360kΩ)
Replace outdoor unit PC board A1P.
Connect the thermistor and turn on
again.
NO
NO
Replace the thermistor (R4T)
YES
YES
Connector
is connected to X16A of
outdoor unit PC board
(A1P).
(VF048)
Resistance
is normal when
measured after
disconnecting the thermistor
(R2T) from the indoor unit
PC board. (3.5kΩ~
360kΩ)
Replace outdoor unit PC board A1P.
Connect the thermistor and turn on
again.
NO
NO
Replace the thermistor (R2T)
YES
YES
Connector
is connected to X19A of
outdoor unit PC board
(A1P).
SI-05C.BOOK Page 145 Monday, November 6, 2000 4:13 PM
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