Troubleshooting - Midea PTAC Series Service Manual

10.Troubleshooting

10.1 Error Display
Codes
AS
ES
CS
oS
HS
Lo
HI
E4
LE
Open or short circuit of T1 temperature sensor
Open or short circuit of T2 temperature sensor
Open or short circuit of T3 temperature sensor
Open or short circuit of T4 temperature sensor
Open or short circuit of T5 or T6 temperature sensor
Temperature is lower than display range(0℃/32℉)
Temperature is higher than display range(37℃/99℉)
Communication malfunction between main control board and display board.
Drive-by-wire control failure
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