Your heat pump evaporator is frosted
Frost is the result of the cold generated by the heat pump on the wet evaporator. This is therefore quite normal. In the case where the amount of frost is very high, this may be due to a lack of gas, or an electronic defect.
1 - Automatic defrost
Our heat pumps are all equipped with a defrost system (passive or active depending on the model). A temperature sensor will trigger this system.
Passive defrosting will shut down the compressor, while keeping the ventilator running.
The active defrosting will reverse the compressor cycle. The compressor will then generate heat to defrost the evaporator more quickly.
Once defrosted, the heat pump will start heating again automatically.
2 - Gas defect
If the amount of frost is very large, or it creates very quickly, we ask you to check the correct amount of gas in the heat pump using the manometer / pressure gauge located on the casing of the pump. To ensure that the gas quantity is correct, please check the value when the pump is switched off. The needle should then indicate within relative degrees of the equivalent of the outside temperature. For example (blue arrow), 20°C of outdoor air, corresponds to about 200PSI, or 1.37MPa or 13.7bar.
* If the gauge needle indicates more than 10°C difference from the actual outside temperature, there is likely a gas leak in the heat pump. Please create a service folder (link)
* If the gas quantity is correct, please check the defrost parameters.
3 - Defrost parameters
It is possible to act directly on the de-frost settings of the heat pump. To do this, please bring your manual (link to POOLEX notice) and go to the paragraph "setting default parameter", as well as on the page of the "table of parameters". You can then act on:
- defrost activation temperature;
- defrost de-activation temperature;
- duration of defrost (or defrost interval)
- Self-activation time before defrosting begins (depending on model)
4 - Permanent Frost
If the heat pump does not meet the defrost parameters (Chapter 3 above), and the amount of ice is significant (see photo) the problem may be from the defrost sensor which is misplaced or defective, or the electronic card itself.
- Please disconnect the heat pump electrically.
- Remove the top cover from the heat pump to access the electrical box and open the cover.
- Ensure that all connection plugs, especially temperature sensors, are properly connected (by pressing).
If the problem persists, then the electronic card is to be replaced.
In case your product is out of warranty (more than 2 years or more than 3 years for the Jetline Premium only), fill out the form (poolex link).
If your product is still under warranty (less than 2 years or less than 3 years for the Jetline Premium only), fill out the form (poolex link) with your purchase invoice and a photo of the problem attached.