Wellea Monobloc
65
Procedure
4.12.4
H6 / HH
Strong wind is blowing towards the
fan, making the fan running in the wrong
direction
Yes
Changer the outdoor unit’s installation
direction or build a shelter to protect the
fan from strong wind
No
Some power wires or communication
wires of fan are not connected properly
1
Yes
Ensure power and communication wires
are connected properly
No
The fan motor is blocked or has failed
Yes
Remove obstruction or replace the fan
motor
No
The power supply is abnormal
Yes
Check the power supply equipment
No
The PFC module is damaged
2
Yes
Replace PFC module
No
The IPM module is damaged
3
Yes
Replace IPM module
No
Replace refrigerant system main PCB
Notes:
1.
Refer to Figures 4-1.1 to 4-1.7 in Part 4, 1 “Outdoor Unit Electric Control Box Layout” and to the
Wellea
Mono Engineering Data Book, Part 2, 5 “Wiring
Diagrams”.
2.
Only applies to single-phase power supply models. Check the voltage between “+” and “-” terminals on the PFC module on the inverter module.
The
normal range is 277V to 354V. If the voltage is outside this range, the PFC module is damaged.
3.
Measure the voltage between the DC fan motor power supply’s white and black wires. The normal voltage is 15V when the unit is in standby. If the
voltage
is significantly different from 15V, the IPM module on the inverter module is damaged. The fan connections on each type of refrigerant system
main PCB
are labelled in Figures 4-2.2, 4-2.4 and 4-2.6 in Part 4, 2.3 “Main PCBs for Refrigerant System, Inverter Modules and Filter Boards”.
