1. unit just started, not running
Check the unit is normal, after the power switch, delay 3 minutes to start; in operation suddenly shut down, then start 3 minutes delay start;
Excluded: normal phenomenon.
2. host endothermic fin frosting
Check the failure of the defrost probe, or (measurement) whether the refrigerant content is lacking, or capillary micro plugging, dirty plugging, ice jam.
Exclude: replace defrost probe; charge the same type of refrigerant, vacuum after necessary and then filling operation, cleaning capillary.
3. fan does not rotate compressor operation
Check whether the plug of fan and motherboard is loose and the refrigerant is too small,
Exclusion: open the upper cover of the main engine, plug the fan joint; charge the same type of refrigerant, vacuum when necessary, and then charge operation.
4. main engine running without heating
Check whether the refrigerant content of the unit is not enough, and whether the air in the heat exchanger is exhausted at the time of installation
Exclusion: when the air in the water tank heat exchanger is not discharged, it will start operation, charging the same type of refrigerant, vacuum pumping must be carried out after charging operation.
The 5. main engine has not run since it is switched on
Check whether the power supply line phase sequence and the host phase sequence are consistent; whether the power supply is energized or not, and the power failure
Exclusion: according to the "left zero right fire" standard sequence connection, into the power supply voltage measurement re connect or replace the matching power supply; identify the reason to solve the power failure.
6. main engine cooling, not heating
Check control, four way valve setting of display,
Excluded: F37 into the display will be "0" set to "1", so that the four way valve power can be resolved.
If you are interested in our products or have any questions, you can either leave us a message or contact us directly. We will contact you in the first time after receiving your information.