Some of the problems on the equipment can be resolved by you or at times by communicating with the service technician over the phone. To avoid a service call the following items are the most common service problems that you could check / resolve yourself.

• Symptoms: Low air flow, Compressor short cycling or cycling on internal overload - no or very little cooling, iced up evaporator on coolers. Brush condenser with soft bristle brush, vacuum or blow out with compressed air.

• Symptoms: Low air flow, iced up evaporator, heating units cycling on high limit.

• Thermostat set too low: Below 68 degrees on air conditioners, below freezing on coolers.
• Cooler door left open: Humidity commonly causes evaporator to ice up.
• Fan belt broken: Motor runs but there is no air circulation.

• Shut off the outdoor compressor by turning the thermostat to the OFF or heat position. Turn the blower switch to ON to allow air to circulate and thaw out the ice - this may take 2 or 3 hours to completely remove all the ice.

• Turn the switch off to the compressor power or turn the thermostat up high enough to prevent the compressor from running (not always possible).
• The fans inside run all the time and will defrost the evaporator. An air drier or hot water can be used (if you can handle the overflow of water) safely to help remove the ice build up. A small torch can be used to speed up the process - BUT BE CAREFUL OF ELECTRICAL WIRES THAT CAN BE IMBEDDED IN THE ICE AND CAUSE AN ELECTRICAL SHORT.

• Loss of one leg of power: Often the small fans will run, but the compressor will short cycle or larger units will lock out on the oil or thermo overload circuit. Beware of reversing rotation of components. By switching two wires on the incoming power, the rotation of the 3 phase components is reversed. Newer Scroll compressors are very noisy and do not pump properly when run in reverse.