Midea MSR1-09HRN1-QC2, Service Manual, Page: 27 / 31

Service manual
24
10. Troubleshooting
10.1 Display board
 Operation
The indicator flashes once every second after power is on and illuminates when the air conditioner is in
operation.
 Timer indicator:
The indicator illuminates then TIMER is set ON.
 PRE-DEF. indicator (For cooling & heating mode only)
The air conditioner starts defrosting automatically if outdoor unit frosts in heating operating.
At this time, PRE-DEF. indicator illuminates.
 Auto indicator:
This indicator flashes when the air conditioner is in AUTO operation.
 ECON indicator
This indicator illuminates while the air conditioner is in economic operation.
10.2 Troubleshooting
Failure phenomenon
Operation
lamp
Timer
lamp
Indoor fan speed has been out of control for over 1 minute
☆
X
Indoor room temp. or evaporator sensor is open circuit or short circuit
☆
On
Over current protection of the compressor occurs 4 times X
☆
EEROM error On
☆
No over-zero signal
☆ ☆

Extinguish
☆ Flash at 5Hz