E5": Voltage Protection Error - Midea LRSJF-V120 Technical Manual

MCAC-RTSM-2012-07
E. "E5": Voltage protection error
Outdoor Unit
Display
Method of
malfunction
detection
Supposed
Causes
Troubleshooting
E5
Measure the voltage, is at
the normal range?
ON
Use a voltage regulator, adjust to
normal voltage, turn the power on
again, is"E5"displayed?
NO
Continue operation
E5
Check whether the power supply voltage is at normal range.
1. The power supply voltage is too high or too low
2. Something wrong with the detecting element on the main board
YES
Replace the main board
Replace the main board
YES
M-thermal Technical Manual (part 4)