Affordable Expert Sydney Wide Service (02) 9831 3700
Sydney North, South & West
Trusted since 1983
Service Tips and Tricks
Our quality air conditioning repair services are performed by professionally qualified, HVAC service technicians. This means we have the experience, skills and tools to fix HVAC problems right the first time.
Did you know, poorly maintained coils or filters not only hurt the energy efficiency of your entire units, but also greatly affect the air quality your family breathe?
To ensure highly efficient and reliable operation we recommend that a regular service health check be carried out at least annually, and your return air filters should be cleaned every 6 weeks.
Custom Air Conditioning is fully licensed and insured in air conditioning repair, sales, service, installation and air conditioning maintenance for all brands of air conditioning units, and most importantly we are ARC Tick certified which means we are authorised to purchase, handle refrigerants and work on your air conditioning equipment without voiding your warranty.
Check batteries in the remote control - is the machine beeping you when you operate the control?
Check the main switch inside the unit's front cover - is it on?
Try the emergency switch located inside the front cover.
Ensure the outdoor unit is not covered - it must have a free passage of air through it.
Check that the remote control is set for either heat or cool and the set temperature is above or below the room (ambient) temperature. N.B. If unit is set to 'dry' it will not cool in extreme temperatures.
Remember that the unit incorporates an automatic time delay before starting.
Is the unit in defrost mode? If so, leave the unit on and it will automatically return to heating mode. N.B. In defrost mode water vapour is emitted from the outdoor unit.
Read the instruction book.
Call us on 9831 3700
P8' (Mitsubishi Electric) or 'spanner' symbol (Daikin) showing on the controller and flashing light. This fault usually occurs if there has been a local power failure. Sometimes it may be necessary to allow time for the power supply to be rectified. If problem persists then call us on 9831 3700.
If system is operating but not efficiently - check the return air filter behind the air intake grill in ceiling is clear - ALL air must pass through here before supplying outlets.
Check that the zone or zones that are switched on allow air to return to the air intake filter - close off areas that are not being air conditioned, that is, toilets, bathrooms, outside doors and windows.
Check that the selected temperature is above or below ambient temperature and that 'cool' or 'heat' is selected. Not 'fan' and not 'dry'.
Is the outdoor machine running? Remember to allow a five minute delay.
Make sure that nothing is obstructing air flow through the outdoor machine.
Call us on 9831 3700 or fill out the form in our contacts page, and one of our staff will get back to you as soon as possible.