Toyotomi CFT35A-R Service Manual page 45

Troubleshooting
(2) For the outdoor unit
a. Phase sequence error:
Phase sequence error
Change the order of two of the wires to power supply.
Switch on the unit again.
If the problem cannot be solved, the outdoor PCB is defective
b. Overload of current
Overload of current
Check the current, normally
Is the current in rated range?
Yes
The outdoor PCB is defective
c. Lack of phase
Check the power supply, is it 3 phase,
Yes
Check the connection between power supply and terminal,
is the voltage in outdoor terminal is 3 phase, 380-415V?
Yes
Outdoor PCB is defective
50
Lack of phase
380-415V?
No
Possible reason
1. Outdoor fan is defective
2. The compressor is defective
3. Refrigerant is over charged
4. Air enter the refrigerant system
Electrical Control