Daikin VRV K - 2.29 Malfunction of Transmission Between Remote Controller and Indoor Unit

Si-95 Troubleshooting
Troubleshooting Inverter K Series 95
2.19 Outdoor Unit: Malfunction of Thermistor for Outdoor Air (R1T)
Remote Controller
Display
HH
HH
99
99
Supposed Causes ■ Defect of thermistor (R1T) for outdoor unit outdoor air intake
■ Defect of outdoor unit PC board (A1P)
Troubleshooting
The alarm indicator is displayed when the fan is being used also.
(VF045)
Resistance
is normal when
measured after
disconnecting the thermistor
(R1T) from the outdoor
unit PC board.
(3.5kΩ~
360kΩ)
Connector is
connected to X20A of outdoor
PC board (A1P).
Replace outdoor unit PC board A1P.
Connect the thermistor and turn on
again.
NO
NO
Replace the thermistor (R1T)
YES
YES
SI-95.BOOK Page 95 Friday, March 31, 2000 10:59 AM