Air source heat pumps are popular devices for cooling and heating homes and offices in an energy-efficient manner. However, there may be situations where an air source heat pump does not cool as expected. In this text, we will discuss six common causes and solutions to these problems.
1. Device settings
The first thing to check if your air source heat pump is not cooling is the settings of the unit. Make sure that the cooling mode is on on the remote control and that the air source heat pump is powered. Cooling mode is identified on most air source heat pumps by a symbol that looks like a snowflake. Also check on the remote control that the temperature setting is around 23-24 degrees Celsius. Try to avoid using automatic mode. In addition, the fan speed should be high enough to effectively circulate the air in the room.
Go through these:
- Make sure that the heat pump's power supply is on, i.e. the plug is in the wall or the safety switch is in the ON position.
- Check with the electrical company that the heat pump's power supply fuse, circuit breaker, or residual current device has not tripped.
- Turn off the equipment using the remote control and check if the indoor unit shuts down normally.
- Replace the batteries in the remote control if the indoor unit does not respond to the remote control command or the remote control display is dim.
- Restart the equipment using the remote control and observe during the startup process.
2. Low refrigerant
Low refrigerant is the most common reason why an air source heat pump does not cool or does not blow cold air. An air source heat pump needs refrigerant to function, and if the amount is too low, the device will not be able to cool the air effectively. Low refrigerant can be caused by a leak, which must be located and repaired. This task requires the help of a professional service technician, as handling refrigerant requires special skills and equipment. Repairing the leak and adding refrigerant can quickly restore the device to normal operation.
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3. Dirty indoor unit
Dirty filters on the indoor unit, especially the fins behind them, can block airflow and reduce the efficiency of the unit. Filters should be cleaned regularly, preferably every 2-3 months, to ensure optimal performance. It is not recommended to wash the fins yourself. It is also important to clean other parts of the indoor unit to ensure airflow is not blocked and cooling is effective.
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4. Outdoor temperature
The cooling capacity of an air source heat pump may be reduced if the outdoor temperature is very high. This is because the device is not able to remove enough heat from the interior. Make sure that the outdoor unit receives enough air and that there are no obstacles around it that would hinder the air circulation. In addition, the outdoor unit should be cleaned regularly of leaves and other debris.
5. Age and condition of the device
Older air source heat pumps can lose their efficiency over time. Regular maintenance of the device is key to maintaining its performance. It is recommended that the air source heat pump be serviced by a professional every 2-3 years. Hesatek offers comprehensive maintenance services to ensure a long service life and optimal operation of the device.
6. Other fault
Other faults, such as those in the indoor unit, may prevent the unit from operating efficiently. The fan or other components may be faulty or worn out. A thorough inspection and maintenance by a professional can resolve these issues and restore the unit to normal operation.
Checklist – Air source heat pump does not cool
- Power supply: Make sure that the heat pump's power supply is turned on.
- Remote control: Replace the batteries and check the remote control operation.
- Device settings: Make sure cooling mode is on and the target temperature is correct.
- Error codes: Monitor the indoor unit display or indicator lights for error codes.
- Filters: Check that the filters on the indoor unit are clean and that air can circulate unhindered.
- Outdoor unit: Make sure the outdoor unit is free of leaves or other debris and is not frozen.
- Remote control: Make sure that no timers have been set on the remote control or via remote control that interfere with heating operation.
- Monitoring: Wait quietly and observe the equipment. Check the operation of the outdoor unit, such as the noise of the fan and compressor.
Summary
Air source heat pump cooling problems can be caused by a number of reasons, such as device settings, low refrigerant, faulty indoor or outdoor unit components, dirty indoor unit, outdoor temperature, or the age and condition of the device. Many of these problems can be solved by regularly checking and maintaining the device. However, if the problem persists or you are unsure of what to do, it is recommended to contact a specialist.
Hesatek offers expert help with all problems related to air source heat pumps. Book maintenance in time and ensure that your air source heat pump works flawlessly, both in the heat of summer and in the cold of winter. For more information and to order maintenance, visit Hesatek's website.
Customer service is open weekdays from 8 am to 3 pm. Calling is free of charge.
