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. happen. 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 unit’s poor performance. In case of special situation, the job must be carried out by service person only.

18Room Air Conditioner

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Heat Controller VMH18SB-1, VMH24SB-1, VMH12SB-1, VMH09SB-1 manual Troubleshooting Tips! Save time and money
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VMH09SB-1, VMH18SB-1, VMH12SB-1, VMH24SB-1 specifications

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