Fujitsu R407C User Manual

ERROR
ERROR CONTENTS
CAUSE
COUNTERMEASURE
1F
1. Error occurrence condition
Communication between
indoor unit and outdoor unit
cannot be performed for a
certain time.
2. Relevant operation
Current operation is
continued.
Error is displayed on
standard wired remote
controller, and displayed on
indoor unit LED.
3. Clearance
Communication between
indoor unit and outdoor unit
is recovered.
1. Error occurrence condition
Indoor unit communication
printed circuit board is not
initialized normally.
2. Relevant operation
Error is displayed on
standard wired remote
controller and displayed on
LED of indoor unit.
3. Clearance
Indoor unit communication
printed circuit board is
initialized correctly.
1. When power turned OFF and turned
ON again:
1) If error doesn't occur, printed circuit
board is normal. Then, remove
noise sources near indoor unit.
2) If error occurs again, remove noise
sources and take measure with the
following countermeasure No.2-3.
2. Replace printed circuit boards with
following procedures,
and check the operation.
1 Replace Indoor unit communication
printed circuit board.
2 Replace Indoor unit control printed
circuit board.
1. Effect of extraneous noise.
2. Printed circuit board is faulty.
Transmission
error
20
Node setting
error
1. When power is turned OFF and
turned ON again:
1) If error doesn't occur, printed circuit
board is normal. Then, remove noise
sources near outdoor unit.
2) If error occurs again, remove noise
sources and take measure with the
following countermeasure No.2-4.
2. Check if communication line is
connected to all indoor unit. Check if
communication line is disconnected.
3. Check the insertion of indoor unit
communication printed circuit board
and outdoor unit communication
printed circuit board.
4. 1) If communication of some indoor
units in same refrigerant system is
abnormal and the compressor
operates, replace printed circuit
boards with following procedures
and check the operation:
1 Replace Indoor unit communication
printed circuit board.
2 Replace Indoor unit control
printed circuit board.
2) If communication of all indoor units
in same refrigerant system is
abnormal and the compressor does
not operate, replace printed circuit
boards with following procedures and
check the operation:
1 Replace Outdoor unit communication
printed circuit board.
2 Replace Outdoor unit control printed
circuit board.
3 Replace Indoor unit communication
printed circuit board.
4 Replace Indoor unit control printed
circuit board.
2. Communication line is not
connected, connection fault,
or disconnection.
3. Insertion for communication
printed circuit board of
indoor unit or outdoor unit
is faulty.
4. Printed circuit board is faulty.
1. Effect of extraneous noise.
ERROR
COCE
05-13

Fujitsu R407C Specifications

General

Brand	Fujitsu
Model	R407C
Category	Air Conditioner
Language	English