OM 1263 • MICROTECH UNIT CONTROLLER 78 www.DaikinApplied.com
ERROR CODE: E7 – Malfunction of Outdoor Unit Fan Motor
Remote
Controller
Display
E7
Method of
Malfunction
Detection
Detect a malfunction based on the current value in the INVERTER PC board (as for motor
2 current value in the fan PC board).
Detect a malfunction for the fan motor circuit based on the number of rotation detected by
hole IC during the fan motor operation.
Malfunction
Decision
Condition
● Overcurrent is detected for INVERTER PC board (A2P) or fan INVERTER PC board
(A5P) (System down is caused by 4 times of detection.)
● In the condition of fan motor rotation, the number of rotation is below the xed number
for more than 6 seconds. (System down is caused by 4 times of detection.)
Supposed
Causes
● Failure of fan motor
● Defect or connection error of the connectors/ harness between the fan motor and PC
board
● The fan can not rotate due to any foreign substances entangled.
● Clear condition: Continue normal operation for 5 minutes
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