Alarm code
14
Abnormal operation of thermistor for indoor unit heat exchanger gas refrigerant pipe
temperature (gas pipe thermistor).
• The RUN indicator flashes and the ALARM indication is displayed on the remote control switch.
• The unit no., the alarm code and the unit code are alternatively displayed in the temperature setting section and the unit
no. and alarm code are displayed on the outdoor unit's PCB1 display.
* This alarm is indicated when the thermistor is short-circuited (less than 0.24 kΩ) or cut (greater than 840 kΩ) during
the cooling or heating operation. The system automatically restarts when the fault is eliminated.
Refer to "Alarm Code 11"
for thermistor resistance.
Yes
Yes
Connect it.
No
Faulty Thermistor
Faulty PCB
No
Is it connected to
THM5 of PCB?
Is resistance of THM5
between 0.24kΩ and
840kΩ?
Thermistor for
Heat Exchanger
Gas Pipe
In Case of 4-Way Cassette Type
PCB1: Control PCB in Outdoor Unit
PCB: Indoor Unit PCB
Cause Check Item
Action
(Turn OFF Main Switch)
Phenomenon
Faulty Gas Pipe
Thermistor
Check resistance.
Replace thermistor
if faulty.
Fault
Check wiring to PCB.
Connect wiring
correctly.
Incorrect Connection
Replace PCB and
check operation.
Replace PCB if faulty.Faulty PCB
8 Troubleshooting
196
SMGB0065 rev. 1 - 12/2010
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