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Troubleshooting MWM-J_(ii)
Troubleshooting
Indicator Lights
IR Signal Receiver
When an infra red remote control operating signal has been transmitted, the signal receiver on the indoor unit
will respond as below to confi rm acceptance of the signal transmission.
ON to OFF 1 Long Beep
OFF to ON
Pump down/Cool force on
2 Short Beep
Others 1 Short Beep
Cooling Unit / Heat Pump Unit
The table below shows the LED indicator lights for the air conditioner unit under normal operation and fault
conditions. The LED lights are located at the middle of the air conditioner unit.
The heat pump units are equipped with an “auto” mode sensor whereby it will provide reasonable room
temperature by switching automatically to either “cool” or “heat” mode according to the temperature set by the
user.
IR Receiver
ON/OFF
Cool / Heat
Timer
Sleep
ON/OFF switch
IR Receiver
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