Fujitsu R407C User Manual

ERROR
CONTENTS
1F
ERROR CAUSE
COUNTERMEASURE
6. 1) If communication error occurs after
parallel communication error occurs,
replace printed circuit boards with
the following procedure, and make
sure the operation.
Replace Transmission adapter
communication printed circuit board.
Replace Transmission adapter
control printed circuit board.
2) For other cases, replace printed circuit
boards with following procedure and
make sure the operation
Replace Indoor unit communication printed
circuit board.
Replace Indoor unit control printed circuit
board.
1
2
1
2
21
1-1 Check continuity error.
1) If error is cleared automatically,
printed circuit board is normal.
Then, remove noise sources near
central remote controller.
2) If error isn't cleared automatically,
check following.
1-2 After ACL key is pressed, or power
is turned on again:
1) If error doesn't occur, printed circuit
board is normal.
Then, remove noise sources near
control panel.
2) If error occurs again, remove noise
sources and take measure with the
following countermeasure No.2,3.
2. The power supply is shut
down or power supply
voltage is abnomal.
3. Replace printed circuit boards
with following procedures and
check the operation.
Replace Transmission adapter
control printed circuit board.
Replace Operation panel printed
circuit board.
1
2
22
2. Transmission adapter
control printed circuit board
is faulty.
2. Replace transmission adapter control
printed circuit board.
3. Printed circuit board is
faulty.
2. Check power supply voltage and
operate after turning on power.
1. Effect of extraneous noise
1. Error occurrence condition
If CPU of central remote
controller is initialized by
momentary power
interruption during the
operation setting or
changing, the setting is
reset.
2. Relevant operation
Error display. Only error
code display can be
operated. Other operations
are ineffective.
1. Error occurrence condition
Operation condition of
indoor units, which is
memorized in transmission
adapter is abnormal.
2. Relevant operation
Error display. Central
remote controller can be
operated.
3. Clearance
When contents of memory,
which is memorized in
transmission adapter is
normal.
Software
error
(INPUT)
Software
error
(OUTPUT)
1. Effect of extraneous noise
4. Check insertion of the communication
printed circuit board of transmission
adaptor and the communication
printed circuit board of indoor unit.
5. Perform initialization.
Transmission
error
3. Clearance
For 2-1), the
communication with indoor
unit is restored.
For 2-2), the
communication between
control printed circuit
board and communication
printed circuit board of
transmission adapter is
performed.
ERROR
CODE
4. Transmission adapter
communication printed circuit
board or indoor unit
communication printed circuit
board insertion is faulty.
5. Initialing setting after indoor
unit address is changed, is
forgotten.
6. Printed circuit board faulty.
1-1 Check error continuity.
1) If error is cleared automatically, printed
circuit board is normal. Then, remove noise
sources near central remote controller.
2) If error isn't cleared automatically,
check following.
1-2 After RESET key on control printed
circuit board of transmission adapter
is pressed, or power is turned on again:
1) If error doesn't occur, printed circuit
board is normal. Then, remove noise
sources near operation panel.
2) If error occurs again, remove noise
sources and take measure with the
following countermeasure No.2.
05-32

Fujitsu R407C Specifications

General

Brand	Fujitsu
Model	R407C
Category	Air Conditioner
Language	English