Daikin VRV Inverter K Series Manual page 322

SI-05C.BOOK Page 308 Monday, November 6, 2000 4:13 PM
Troubleshooting
3.10 Outdoor Unit: Malfunction of Thermistor for Outdoor Air (R1T)
H H H H 9 9 9 9
Remote Controller
Display
Supposed Causes
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)
J J J J 3 3 3 3
Remote Controller
Display
Supposed Causes
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.
308
Defect of thermistor (R1T) for outdoor unit outdoor air intake
Defect of outdoor unit PC board
Connector
NO
is connected to X20A of
outdoor PC board.
YES
Resistance
is normal when
NO
measured after disconnecting
the thermistor (R1T) from the
outdoor unit PC board.
(3.5kΩ~
360kΩ)
YES
Defect of thermistor (R3T, R3-1T, R3-2T) for outdoor unit discharge pipe
Defect of outdoor unit PC board
Connector is
NO
connected to X17A (18) of
outdoor unit PC
board.
YES
Resistance
is normal
when measured after
NO
disconnecting the thermistor
(R3T, R3-1T, R3-2T) from
the indoor unit PC
board. (3.5kΩ~
400kΩ)
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
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
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Troubleshooting PLUS Series
SiE-05C
(VF144)
(VF145)