Daikin VRV K - 2.31 Malfunction of Transmission Between MAIN and SUB Remote Controllers

Si-95 Troubleshooting
Troubleshooting Inverter K Series 97
2.21 Outdoor Unit: Malfunction of Thermistor (R4T) for Suction Pipe
Remote Controller
Display
JJ
JJ
55
55
Supposed Causes ■ Defect of thermistor (R4-1T, R4-2T) 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.
(VF047)
Resistance
is normal when
measured after
disconnecting the thermistor
(R4-1T, R4-2T) 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 (R4-1T or
R4-2T)
YES
YES
Connector is
connected to X14A, X15A
of outdoor unit PC
board (A1P).
SI-95.BOOK Page 97 Friday, March 31, 2000 10:59 AM