Heat Controller VMC30SB-1 manual Troubleshooting Tips! Save time and money

Maintenance and Service

TroubleshootingTips!Savetimeandmoney!

The air conditioner may be operating abnormally when:

Problem Possible Causes What To Do

Air conditioner does not start

■ The air conditioner is	• Make sure the air conditioner plug is
unplugged.	pushed completely into the outlet.
■ The fuse is blown/circuit	• Check the house fuse/circuit breaker box
breaker is tripped.	and replace the fuse or reset the breaker.
■ Power failure.	• If power failure occurs, turn the mode
	control to OFF.
	When power is restored, wait 3 minutes to
	restart the air conditioner to prevent
	tripping of the compressor overload.
■ High voltage.	• If the voltage is unusually very high or low
	the Circuit Breaker will trip.

Air conditioner does not cool as it should

■Airflow is restricted.

■The air filter is dirty.

■The room may have been hot.

■Cold air is escaping.

■Check the temperature settings.

■There might be a heating source in the room.

•Make sure there are no curtains, blinds, or furniture blocking the front of the air conditioner.

•Clean the filter at least every 2 weeks. See the Maintenance and Service section.

•When the air conditioner is first turned on, you need to allow time for the room to cool down.

•Check for open furnace floor registers and cold air returns.

•Make sure they are correct.

•Check and remove such source or turn it off while using the air conditioner.

Calltheserviceimmediately inthefollowingsituations

1.Anything abnormal such as burning smell, loud noise etc. happens. Stop the unit and turn the breaker off. Never try to repair by yourself or restart the system in such cases.

2.Main power cord is too hot or damaged.

3.Error code is generated by self diagnosis.

4.Water leaks from indoor unit even if the humidity is low.

5.Any switch, breaker (safety, ground) or fuse fails to work properly

User must carry routine checkup & cleaning to avoid poor performance. Any other types of service must be carried out by service person only.

Owner's Manual 17