Fujitsu AIRSTAGE V-II - Communication Error between Outdoor Unit; Noise, Momentary Open, Voltage Drop

Communication Error Between
Outdoor Unit
Outdoor unit main PCB
Check Point 1 : Noise, momentary open, voltage drop
Check if temporary voltage drop was not generated.
Check if momentary open was not generated.
Check if ground is connection correctly or there are no related cables near the power line.
OK
Check Point 2 : Check the power supply
Main power ON/OFF state check
Power cable connection, open check
OK
OK
Check Point 4 : Check the connection of communication lines
between outdoor units
Connection and open check of communication lines between outdoor units.
T Turn off the power and check.
OK
Check Point 5 : Replace Main PCB
Change Main PCB and set up the original address.
(Refer to 06-03 page Main PCB removal.)
Master unit: Master unit: State in which "number of connected slave units" by Dip-SW and
the number of slave units which can be recognized by
communication did not match continued for 10 seconds or more
after the start of control.
Slave unit: State in which communication from the master unit was not
received continued for 10 seconds or more after the start of control.
1. Noise, momentary open, voltage drop 2. Power supply defective
3. The number setting mistake of outdoor unit
4. Connection of communication lines between outdoor units defective 5. Main PCB defective
Indoor Unit : Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
Outdoor Unit : E. 13. 1
Error Code : 13
04-22
Check Point 3 : Check the number setting of outdoor units
Check the number setting of outdoor units
Number of outdoor unit
1 unit
OFF
ON
OFF
OFF
OFF
ON
DIP-SW
2 units
3 units
SET5-1
DIP-SW
SET5-2
Trouble shooting 14
Indicate or Display:
Detective Actuators:
Detective details:
OUTDOOR UNIT Error Method:
Forecast of Cause :