Troubleshooting - GD Midea Refrigeration Equipment MSG-18HRN2 Technical & Service Manual

7.Troubleshooting

7.1 For all cooling only model
Failure phenomenon
Indoor fan speed has been out of control for over 1 minute
Indoor room temp. or evaporator sensor is open circuit or short
circuit
Over current protection of the compressor occurs 4 times
EEPROM error
No over-zero signal
r Extinguish
Flash at 5Hz
7.2 For all heat pump model
Failure phenomenon
Over current protection of the compressor occurs 4 times
Indoor fan speed has been out of control for over 1 minute
No over-zero signal
Temp. sensor on indoor evaporator is open circuit or short circuit
Indoor room temp. sensor is open circuit or short circuit
EEPROM error
r Extinguish
Flash at 5Hz
Operation lamp Timer lamp
X
On
Operation lamp Timer lamp
X
X
X
On
18
X
On
Defrosting lamp
X
X
X
X