Chigo CS-25V1A-H1; CS-35V1A-E2; CS-50V9A-S; CS-70V9A-T - 12, The malfunction code: FF (The outdoor unit fault)

12，The malfunction code: FF (The outdoor unit fault)
Fig.32 the DC motor
Turn off the power
Check the resistance value of the motor each port are normal.
The reference resistance value of motor port.(Vm-GND ∞、
Vcc-GND 125kΩ、Vsp-GND 200kΩ、PG-GND ∞)
N
The motor is bad or there is trouble
in the circuit. Please change it
Y
Power up and turn on the unit, check motor port
voltage value whether the VCC and Vm are
normal (the normal voltage value:VCC:15Vdc，
Vm/P:340Vdc，Vsp:0~5V)
Refer to Fig. 32
Y
The outdoor PCB is bad. Please
change it
The motor circuit is bad. Please change this
motor
N
The faulty cause：
1， The motor is bad or there is
trouble in the indoor PCB
2， The outdoor PCB is bad
3， Motor is bad
The reference resistance value of motor
port.(Vm-GND： ∞， Vcc-GND ：125kΩ，
Vsp-GND ： 200kΩ，PG-GND： ∞)