Outdoor Unit Transmission Pcb Parallel Communication Error - Fujitsu Airstage VR-II Series Service Manual

Trouble shooting 34
OUTDOOR UNIT Error Method:
Outdoor Unit Transmission PCB
Parallel Communication Error
Detective Actuators:
Outdoor unit Main PCB
Forecast of Cause : 1. Noise
4. Main PCB defective
Check Point 1-1 : Turn the power on again.
Error displayed again?
YES
Check Point 2 : Check the communication PCB connection
Communication PCB connection ( Lose connection ) check
OK
Check Point 3 : Check the communication PCB
Communication PCB check
No any damages on the PCB, replace the communication PCB.
OK
Check Point 4 : Replace Main PCB
Change Main PCB and set up the original address.
Indicate or Display:
E69. 1
Outdoor Unit : E. 6 9. 1
Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash,
Error Code
*When this error occurs on the Slave outdoor unit, Error code 69.1 is transfered to
each device on the network.
When this error occures on the Master outdoor unit, the indoor unit on the network
indicates 14 (14.3 No communication from Outdoor unit), and Service tool indicates
14.1 (Outdoor unit Netwrok communication Error).
Detective details:
When Parallel communication error (Communication reset occurs
continuously more than specified times) is detected.
2. Communication PCB connection defective
Check Point 1-2 : Noise
NO
Check if ground is connection correctly or there are
no related cables near the power line.
Filter LED Continuous Flash. / Operation LED 1 time Flash,
Timer LED 4 Times Flash, Filter LED Continuous Flash.
: 9 U / 6 9 / 1 4 / 14.1 / 14.3*
3. Communication PCB defective
04-43