Daikin VRV Inverter K Series - 4.2 How to use the Monitor Switch on the Inverter PC Board; 4.2 How to Use The Monitor Switch On The Inverter PC Board

Troubleshooting SiE-05C
308 Troubleshooting PLUS Series
3.10 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
Troubleshooting Troubleshoot the outdoor unit for which the HWL is lit in accordance with the following flow chart.
The alarm indicator is displayed when the fan is being used also.
3.11 Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R3T)
Remote Controller
Display
JJ
JJ
33
33
Supposed Causes  Defect of thermistor (R3T, R3-1T, R3-2T) for outdoor unit discharge pipe
 Defect of outdoor unit PC board
Troubleshooting Troubleshoot the outdoor unit for which the HWL is lit in accordance with the following flow chart.
The alarm indicator is displayed when the fan is being used also.
YES
YES
Connect the thermistor and
turn on again.
Replace the thermistor
(X20A)
Replace outdoor unit PC
board.
INV outdoor unit : A1P
Constant speed outdoor unit :
A1P
Connector
is connected to X20A of
outdoor PC board.
Resistance
is normal when
measured after disconnecting
the thermistor (R1T) from the
outdoor unit PC board.
(3.5kΩ~
360kΩ)
NO
NO
(VF144)
YES
YES
Connect the thermistor and
turn on again.
Replace the thermistor (R3T,
R3-1T, R3-2T)
Replace outdoor unit PC
board.
INV outdoor unit : A1P
Constant speed outdoor unit :
A1P
Connector is
connected to X17A (18) of
outdoor unit PC
board.
Resistance
is normal
when measured after
disconnecting the thermistor
(R3T, R3-1T, R3-2T) from
the indoor unit PC
board. (3.5kΩ~
400kΩ)
NO
NO
(VF145)
SI-05C.BOOK Page 308 Monday, November 6, 2000 4:13 PM
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