Does the air energy heat pump unit need maintenance?

Maintenance method:

1. Check and tighten the terminals on the circuit, and check the burning of each contactor contact.

2. Polish the contacts with canvas to remove oxides. If the burn is serious, it is recommended to replace it.

3. Check whether the solenoid valves, such as the solenoid valve of the four-way reversing valve, the loading and unloading solenoid valve of the unit, the liquid spraying solenoid valve and the electric heating are normal, or replace or repair the maintenance standard: the contacts are clean, no burnt oxide, synchronous contacts and no alternating sound. 4. Check the safety device.

Maintenance method: Check and test various safety devices (thermal protector, flow switch, high voltage switch and other protection devices) and check the set parameters.

Maintenance standard: the thermal protection is fixed well, the wiring is intact, the flow switch is refueled, the opening and closing actions are normal, and the high and low voltage switches operate at 24.5±0.5 bar.