OPERATION INDICATOR lamp blinks 14 times or more — Other abnormality detected

What does OPERATION INDICATOR 14+ blinks mean?

The indoor unit's upper lamp blinks 14 or more times, indicating a general abnormality that isn't covered by other specific blink patterns. This could include issues with indoor thermistors, defrost thermistor, or ambient temperature thermistor.

• Abnormality of indoor thermistors
• Abnormality of defrost thermistor
• Abnormality of ambient temperature thermistor
• Problems with the stop valve or 4-way valve

Click steps to track your progress.

1. 1

   Check the stop valve on the outdoor unit and the 4-way valve for proper operation.

2. 2

   Use the failure mode recall function for the outdoor unit to check the abnormality in detail (refer to the outdoor unit service manual).

3. 3

   Refer to the TEST POINT DIAGRAM AND VOLTAGE section in the service manual for thermistor characteristics.

4. 4

   Do not restart operation without repair to prevent hazards; contact a qualified technician.