Troubleshooting 43 - Outdoor Unit Error Method: Parallel Communication Error - Fujitsu Airstage V series Service Manual

Trouble shooting 43
OUTDOOR UNIT Error Method:
Parallel Communication Error
Detective Actuators:
Outdoor Unit Controller PCB circuit
Outdoor Transmission PCB
Forecast of Cause : 1. Connection failure 2. Outside cause 3. Transmission PCB failure 4. Controller PCB failure
Check Point 1-1 : Restart Operation
Does LED error indication reappear?
YES
Check Point 2 : Check connections
p Check if Outdoor Transmission PCB connection is loose.
OK
Check Point 3 : Replace Transmission PCB
p Replace Transmission PCB
If the symptom does not change, replace Controller
PCB and set up the original address.
Indicate or Display:
Outdoor Unit : LED1 Flash, LED5
Indoor Unit : Operation LED Flash, Timer LED 3 Times Blink
ERROR CODE : E : 32
Detective details:
When the parallel communication (communication between the Master Micon
and Nuron Chip) is failed for 5 times.
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).
Note : Master Micon
Master Micon is the Main Micon that is installed
on the Controller PCB.
Note : Nuron Chip
Nuron Chip is the Micon that can be installed
into a device, making the device to have an
intelligence, and becomes able to communicate
each other. This is equipped on Transmission
PCB.
06-53
7 Times Blink
Swing LED 3 Times Blink