Outdoor Unit Error Method; Noise, Momentary Open, Voltage Drop; Check The Power Supply; Check The Number Setting Of Outdoor Units - Fujitsu Airstage VR-II Series Service Manual

Trouble shooting 4

OUTDOOR UNIT Error Method:

Communication Error Between
Outdoor unit
Detective Actuators:
Outdoor unit Main PCB

1. Noise, momentary open, voltage drop

Forecast of Cause :
3. The number setting mistake of outdoor unit
4. Connection of communication lines between outdoor units defective
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
Check Point 3 : Check the number setting of outdoor units

Check the number setting of outdoor units.

Number of outdoor unit
1 unit
2 units
3 units
OK
Check Point 4 : Check the connection of communication lines
between outdoor units
Turn off the power and check.
Connection and open check of communication lines between outdoor units.
OK
Check Point 5 : Replace Main PCB
Change Main PCB and set up the original address.
Indicate or Display:
E
1 3. 1
Outdoor Unit : E. 1 3. 1
Indoor Unit
Error Code
Detective details:
Master unit: State in which "number of connected slave units" by Dip-SW and
Slave unit: State in which communication from the master unit was not
DIP-SW DIP-SW
SET 5-1 SET 5-2
OFF OFF
OFF ON
ON OFF
: Operation LED 9 times Flash, Timer LED 15 Times Flash,
Filter LED Continuous Flash.
: 9 U / 1 3
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.
received continued for 10 seconds or more after the start of control.
04-13
2. Power supply defective
5. Main PCB defective