What is the Reason Why the Air Source Heat Pump does not Shut Down?

The following are some common reasons why the air source heat pump does not shut down:

1. Temperature setting problem

If the temperature setting value is too high, the heat pump may keep running in an attempt to reach this temperature. For example, if the indoor temperature is set to 30℃ and the heat pump has limited heating capacity, it will continue to work.

2. Thermostat failure

The thermostat is a key component for controlling the start and stop of the heat pump. If the thermostat fails and cannot accurately sense the temperature, it cannot correctly send a signal to the heat pump to stop running, causing the heat pump to not shut down.

3. System leakage

The cooling or heating cycle of the air source heat pump depends on the refrigerant. If there is a leak in the system and the refrigerant is insufficient, the heat pump will not be able to reach the set temperature and will not shut down.

4. Compressor failure

The compressor is the core component of the heat pump. If the exhaust valve or suction valve of the compressor is damaged, the compressor may not be able to compress or discharge the refrigerant normally, causing the heat pump to not work properly and not shut down.

5. Abnormal defrosting function

In heating mode, when the outdoor unit is frosted to a certain extent, the heat pump needs to enter defrosting mode. If the defrosting function fails, such as a defrost sensor failure, the heat pump may continue to run without normal defrosting and will not stop.