Fujitsu R407C User Manual

ERROR
ERROR CONTENTS
CAUSE
COUNTERMEASURE
00 No errors
02
1. Error occurrence condition
When power is turned on.
Error for the model informa-
tion, which is memorized
in EEPROM, occurs.
2. Relevant operation
1) Relevant indoor unit is
stopped (Not started).
2) Error is displayed on LED of
indoor unit or output to
communication bus line.
3. Clearance 
Model information, which is
memorized in EEPROM is
recovered normally.
1. Error occurrence condition
Communication between two
microcomputers on indoor
unit control printed circuit
board is not performed
correctly.
2. Relevant operation
1) Relevant indoor unit is
stopped (not started).
2) Error is displayed on LED of
indoor unit or output to
communication bus line.
3. Clearance
The communication between
microcomputers is
performed correctly.
Replace control printed circuit board of
indoor unit.
1. When power is turned off, and then
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.
2. Replace indoor unit control printed
circuit board.
Model information is not
memorized or erased because
of some reason.
1. Effect of extraneous noise
2. Control printed circuit board
of Indoor unit is faulty.
Model
information
error
03
Microcomputer
communication
error
1. Error occurrence condition
When control printed circuit
board of Indoor unit detects
frequency, which is not
specified.
2. Relevant operation
1) Relevant indoor unit is
stopped (not started).
2) Error is displayed on LED of
indoor unit or output to
communication bus line.
3. Clearance
Control printed circuit board
of Indoor unit detects the
specified frequency.
Check power supply frequency and
apply the power whose frequency is
within the specified frequency.
Power supply frequency is in
the following range. Lower than
45Hz or Higher than 65Hz.
04
Power supply
frequency
abnormal
1. Error occurrence condition
After indoor unit operation is
started, EEPROM cannot
be accessed because of
disturbance or device error.
2. Relevant operation
Error is displayed on LED
of indoor unit.
3. Clearance
Access to EEPROM is
performed correctly.
1. Remove noise sources near indoor
unit.
2. Replace control printed circuit board
of indoor unit.
EEPROM cannot be accessed
because of disturbance, device
error, etc.
06
EEPROM
access error
INDOOR UNIT TROUBLESHOOTING
ERROR
CODE
5-5 ERROR CODE & TROUBLESHOOTING
5-5-1 TROUBLE SHOOTING WITH ERROR CODE
05-10

Fujitsu R407C Specifications

General

Brand	Fujitsu
Model	R407C
Category	Air Conditioner
Language	English