Midea MFE-60ARN1-RB4W Service Manual page 38

calculate time again).
(3) Accumulated time when temperature of outdoor heat exchanger coil T3 is below 3° C
reaches to 80 minutes, then consecutive 3 minutes less than -2 degrees (Just for the
AC is turn on , whether or not the heating mode the temperature was detected, start
to statistical time when reach the temperature condition . Shut down or defrosting
calculate time again).
(4) Under evaporator high temperature protection, the accumulated time when outdoor
fan motor is off and compressor is on reaches up to over 90 minutes .( Shut down or
defrosting or T3 is over 15° C, calculate time again.)
--- Defrosting Action
Four-way valve, indoor fan, outdoor fan are shut down. Compressor keeps on.
--- Ending Of Defrosting Condition (meet one of the following is ok):
(1)Time of defrosting lasts 10 minutes.
(2) Temperature of outdoor coil T3 is up to 8° C and continues to 80 seconds.
(3) Temperature of outdoor coil T3 is up to 15° C.
The others modes:
---Defrosting Conditions
Starting Of Defrosting Condition:
T3< 0° C and the compressor keeps running over 45 minutes. Meanwhile T3＜-3° C for
3minutes.
--- Defrosting Action
Four-way valve, indoor fan, outdoor fan are shut down. Compressor keeps on.
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