Troubleshooting
Samsung Electronics
4-13
4-4-4 When indoor temperature sensor error code is "
" indicated on the indoor
temperature display area
1. Cause of malfunction
1) Disconnected or loosely connected indoor temperature sensor
2) Cold soldering joint of indoor Main PBA MICOM
3) Faulty sensor itself (penetration of moisture into sensor)
2. Check procedure
Replace faulty temperature sensor itself
Replace the Main PBA if the same problem
occurs even after re-soldering the micom
pin due to the faulty Main PBA
Yes
Turn off the main power switch.
Turn on the main power switch.
Replace the Main PBA if the same
problem occurs even after re-soldering
the micom pin due to the faulty Main PBA
No
After assembling
The temperature sensor on the PBA,
Is the voltage of both ends between
DC1V~DC4V?
Yes
Yes
No
When measuring the
Resistance of both ends of the temperature
sensor by itself, is the reading 10kω at room
Temperature of 25°C?
Replace faulty temperature sensor itself
No
Is the sensor wire disconnected
or loosely connected?
<Measure voltage>
<Measure voltage>