Specifications

99
Troubleshooting MVCU-2009
MWM-G Series
IR Signal Receiver
When there is infrared remote control operating
signal, the signal receiver on indoor unit will made a
(beep) for signal acceptance confi rmation.
Cooling unit
The table below shows the LED indicator light for air
conditioner unit under normal operation and fault
condition. The LED indicator lights are located at the
middle of the air conditioner unit.
LED Indicator Lights : Normal Operation and Fault Conditions for Cooling Unit

COOL/HEAT
(GREEN/RED)

Normal Operation / Fault Indication Action
Green
Cool mode -
Timer on -
Sleep mode on -
Ionizer on -
Fan mode on -
Dry mode on
1 time
Room air sensor contact Loose / Short Call your dealer
3 times
Outdoor coil sensor open Call your dealer
Indoor coil sensor open Call your dealer
1 time
Compressor overload / Indoor coil
sensor short / Outdoor coil sensor short
Call your dealer
3 times
Gas leak Call your dealer
5 times
Outdoor coil sensor exist (MS mode) Call your dealer
6 times
Hardware error (tact switch pin short) Call your dealer
- ON - ON or OFF - Blinking
IR Receiver
LED indicator lights
Cooling : LED Indicator Light Display
13_Troubleshooting.indd 9913_Troubleshooting.indd 99 4/28/2009 11:30:54 AM4/28/2009 11:30:54 AM