Troubleshooting 42 - Outdoor Unit Error Method: Inverter Communication Error (Only For Main Unit) - Fujitsu Airstage V series Service Manual

Trouble shooting 42
OUTDOOR UNIT Error Method:
Inverter Communication Error
(Only for Main Unit)
Detective Actuators:
Outdoor Unit Controller PCB circuit
Inverter PCB
Forecast of Cause : 1. Connection failure 2. Outside cause 3. Filter PCB failure 4. Inverter PCB failure
Check Point 1-1 : Restart Operation
Does LED error indication reappear?
YES
Check Point 2 :
Check connection of Inverter PCB
p Check connection between Inverter PCB and Controller
PCB, and between Inverter PCB and Filter PCB. (If there
is loose connector or cable open)
OK
Check Point 3 : Check Filter PCB
p Check Filter PCB (PARTS INFORMATION 4)
If it is not defective, Inverter PCB is considered as
defective. Replace Inverter PCB and check operation.
Indicate or Display:
Outdoor Unit : LED1 Flash, LED5
Indoor Unit : Operation LED
ERROR CODE : E : 32
Detective details:
When no signal is received for longer than 10 seconds from Inverter PCB.
NO
Check Point 1-2 : Check outside cause such as noise
p Check the complete insulation of the grounding.
p Check if there is any equipment that causes harmonic wave near
the power cable (Neon light bulb or any electronic equipment
which causes harmonic wave).
06-52
6 Times Blink
Blink, Timer LED 3Time Blinks,
Swing LED 3Time Blinks,