1-time blink every 0.5-second — Room temperature thermistor short or open circuit

What does 1-time blink (0.5-second interval) mean?

The left lamp of the OPERATION INDICATOR blinks once every 0.5 seconds. This indicates that the room temperature thermistor has a short circuit or an open circuit, detected during operation.

• Room temperature thermistor is short-circuited.
• Room temperature thermistor has an open circuit.

Click steps to track your progress.

1. 1

   Turn OFF the power supply to the unit.

2. 2

   Refer to the characteristics of the room temperature thermistor (Section 9-7) for detailed information.

3. 3

   Consider contacting a qualified technician to check or replace the thermistor.