Daikin VRV K - 2.32 Malfunction of Transmission Between Indoor and Outdoor Units in the Same System

Troubleshooting Si-95
98 Troubleshooting Inverter K Series
2.22 Outdoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger
Remote Controller
Display
JJ
JJ
66
66
Supposed Causes ■ Defect of thermistor (R2-1T, R2-2T) for outdoor unit coil
■ Defect of outdoor unit PC board (A1P)
Troubleshooting
The alarm indicator is displayed when the fan is being used also.
(VF048)
Resistance
is normal when
measured after
disconnecting the thermistor
(R2-1T, R2-2T) 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 (R2-1T, R2-2T)
YES
YES
Connector is
connected to X18A, X19A of
outdoor unit PC board
(A1P).
SI-95.BOOK Page 98 Friday, March 31, 2000 10:59 AM