Daikin VRV III-S RXYMQ36 48PVJU, Service Manual

Page: 147 / 264

Troubleshooting by Indication on the Remote Controller SiUS34-907
138 Troubleshooting
3.17 “
E7
” Malfunction of Outdoor Unit Fan Motor
Remote
Controller
Display
E7
Applicable
Models
RXYMQ36 · 48PVJU
Method of
Malfunction
Detection
Detect a malfunction based on the current value in the inverter PCB (as for motor 2, current value in
the fan PCB).
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
Conditions

Overcurrent is detected for inverter PCB (A2P) or fan inverter PCB (A3P)
(System down is caused by 4 times of detection.)

In the condition of fan motor rotation, the number of rotation is below the fixed number for more
than 6 seconds. (System down is caused by 4 times of detection.)
Supposed
Causes

Failure of fan motor

Defect or connect ion error of the connectors/ harness between the fan motor and PCB

The fan can not rotate due to any foreign substances entangled.

Clear condition: Continue normal operation for 5 minutes