Heat Pump, Split System, Single Service, 3 phase
40 Maintenance Document 1394-1
Clear 18: Fan motor error (permanent stoppage)
Hydraulic Unit LED:
Green 9 flashes / Red 7 flashes
Outdoor Unit LED: 16 flashes (fan 1), 17 flashes (fan 2)
Probable causes:
• Fan motor failure.
• Motor protection.
• Main PCB failure.
Check:
1. Check fan rotation:
- Switch off the heat pump and rotate the fan manually.
- If the fan or bearings are faulty, replace them.
2. Check the ambient temperature around the motor:
- Check excessively high temperature around the fan.
Wait until the temperature comes down again and switch the
fan back on.
3. Check the main board output voltage:
- On the outdoor unit, check the output voltage (DC) of the following connectors:
Terminals Voltage
1 (red)/ 3 (black) 250 400V
4 (white)/3 (black) 15 ±2V
If the voltage is incorrect, replace Main PCB.
OK
OK
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