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7.Troubleshooting
7.1 Indoor unit
Failure phenomenon Operation lamp Timer lamp
Indoor fan speed has been out of control for over 1 minute ☆ X
Indoor room temp. sensor or evaporator temp. sensor is open circuit
or short circuit
☆ on
EEROM error on ☆
Over current protection of the compressor occurs 4 times in 1h X ☆
r Extinguish
☆ Flash at 5Hz
7.2 Outdoor unit (on mainboard)
Failure phenomenon LED1 LED2 LED3 Sensor in outdoor unit
Condenser high temperature protection ☆ ☆
RT3B or RT3A
RT3A sensor is open circuit or short circuit ☆
RT3A
RT4 sensor is open circuit or short circuit ☆
RT4
RT3B sensor is open circuit or short circuit ☆
RT3B
☆ Flash at 2Hz
Remark :
Standard by a unit working b unit working a unit and b unit working
LED1 Blinking at 0.5 Hz On Off On
LED2 Blinking at 0.5 Hz Off On On
LED3 Blinking at 0.5 Hz Off Off off
7.3 Outdoor unit (on LMFPQ1)
Standard by a or b unit working RT2 or RT1 sensor is open circuit or short circuit
LED Blinking at 0.5 Hz On Blinking at5 Hz
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