Midea MFH180-G1302DS F01E-US Technical Service Manual page 58

Error Code Description
E50/E55 inverter board
speed signal lost
or blocked.
frequency board
E50/E56
motor
overtemperature.
frequency board
E50/E57
radiator
overtemperature.
E50/E58 frequency board
motor overload
or motor open
phase.
E50/E5B inverter board
reset fault.
E50/E5C inverter board
overvoltage.
E50/E5D inverter board
undervoltage
E50/E5E
inverter board
ultra high voltage.
inverter board
E50/E5F
read write flash
fault.
E50/E5A Inverter
Communication
Failed.
NOTE: It's important to note error codes should only be used to help identify those components which
require testing. Never replace a part based solely on an error code. The control can generate a false error
if the right conditions exist . Use the code only as a reference and always check the component before
replacing.
Problem
inverter • change the inverter.
board speed
signal lost
motor
• change the inverter.
overtemperature
frequency board • change the inverter
radiator
overtemperature
frequency 1. check motor wire
•
board motor
2. change inverter
overload or
3. check whether the system is blocked.
motor open
phase.
• change the inverter.
inverter board
reset fault.
inverter board • check power system
overvoltage.
inverter board • check power system
undervoltage.
inverter board
check power system
•
ultra high
voltage.
inverter board • change the inverter.
read write flash
fault.
• Check the inverter communication wire
Can not check
• Chek the inverter
the
Check the main contorl
communication •
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Possible Cause/Action