The system should be serviced by a qualified person every 12 months depending on use. Before servicing, establish the refrigerant that has been used in the system.
- Inspect the filters, blower and indoor coil for dirt or obstructions.
- Check the airflow.
- Check the output temperature.
- Clean the condenser coils as follows:
Clear the outside of the coil of debris.
Vacuum the coil fins using a soft bristle brush attachment – take care to avoid bending the fins.
Spray water from the inside to the outside of the coils to remove stuck debris using a hose and spray gun.
Vacuum or remove by hand any debris remaining in the unit.
If there are no bent coil fins, replace grille covers.
- Check coil fins for damage – if coil fins are bent, straighten using a proprietary tool.
- Lubricate fan bearings if required – sealed bearing units do not require oiling.
- Inspect fan for damage and repair as required.
- Check that the condenser unit is secure and level in both directions. If necessary, adjust the levelling feet, or make level with timber/plastic shims. If the unit is seriously out of level, repair or replace the base the unit sits on. Do not spray the fan motor or wires with water.
- Check the operation of the air-on/air-off with a digital thermometer.
- Check pipe joints for refrigerant leakage with bubble solution.
- Check terminals and connections – clean and tighten if necessary.
- Check fan motors for lubrication.
- Check that the electric control is operating correctly.
- Check that the thermostat is operating correctly.
- Check the voltage.