Service Manual

10.2 Troubleshooting

10.2.1 Open circuit or short circuit of temperature sensor diagnosis and solution(AS/E5/CS/oS/HS)

Error Code

AS/E5/CS/oS/HS

Malfunction decision

conditions

If the sampling voltage is lower than 0.06V or higher than 4.94V, the

LED will display the failure.

Supposed causes

● Wiring mistake

● Faulty sensor

● Faulty PCB

Troubleshooting:

Check the connection

between temperature

sensor and PCB.

Correct the connectionNo

Yes

Replace indoor main PCB

Measure the resistance

value of the sensor

Repalce the sensorNo

Yes

T5/T6