147
Troubleshooting
Alarm
Code
14
Abnormality of Thermistor for Gas Refrigerant Pipe Temperature at Indoor Unit Heat Exchanger
(Gas Pipe Thermistor)
● The RUN indicator (Red) is ashing
● The indoor unit number, the alarm code, the unit model code and the connected number of indoor units are displayed on
LCD. Meanwhile, the indoor unit number and the alarm code are displayed on the 7-segment of outdoor unit PCB.
★
This alarm code is indicated when a short circuit (less than 0.24kΩ) or disconnection (more than 840kΩ) of the thermistor
is detected during the heating
*1)
or cooling operation. The operation is automatically restarted when the malfunction is
removed.
Faulty Thermistor
Refer to "Alarm Code 11"
for thermistor resistance.
Yes
Yes
Connect it.
No
Faulty I.U. PCB
No
Is the thermistor
connected to THM5
(gas pipe) of
I.U. PCB?
Is resistance of THM5
between 0.24kΩ and
840kΩ?
Cause Check Item
Action
(Turn OFF Main Switch)
Phenomenon
Faulty Thermistor
for Indoor Unit
Heat Exchanger
Gas Pipe Temp.
Check resistance.
Replace thermistor
if faulty.
Fault
Check wiring to
I.U. PCB.
Connect wiring
correctly.
Incorrect Connection
Replace I.U. PCB
and check operation.
Replace I.U. PCB
if faulty.
Faulty I.U. PCB
THM5
Gas Pipe Thermistor
*1): The heating operation is available only during the test run.
THM5
Gas Pipe Thermistor
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