Fujitsu R407C User Manual

ERROR
CONTENTS
ERROR CAUSE
COUNTERMEASURE
Pump down
error
Switch pump down DIP SW1-3 in
control printed circuit board of outdoor
unit from ON to OFF.
Pump down SW remains ON.
1. Error occurrence condition
Six minutes have elapsed
since pump down is
performed, or discharge
pressure sensor PH is 3MPa
or higher.
2. Relevant operation
1) All compressors and
outdoor fans are stopped.
2) Error is displayed on LED of
outdoor unit and output to
communication bus line.
3. Clearance
Pump down DIP SW1-3 is
switched from ON to OFF.
28
1. When power turned off, then turned
back on:
1) If error doesn't occur, PC 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.
2. Replace printed circuit boards with
following procedure, and check the
operation.
(1) Replace Outdoor unit communication
PC board
(2) Replace Outdoor unit control
PC board
1. Effect of extraneous noise
2. Printed circuit board
is faulty.
Indoor unit error
Error occurs on indoor unit
in same refrigerant system.
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.
1. Effect of extraneous noise
See indoor unit troubleshooting.
Indoor unit is faulty.
2. Check the insertion of outdoor unit
communication printed circuit board.
2. Outdoor unit communication
PC board insertion is faulty.
Node setting
error
1. Error occurrence condition
Communication printed
circuit board of outdoor unit
isn't initialized correctly.
2. Relevant operation
Error is displayed on LED of
outdoor unit.
3. Clearance
Communication printed
circuit board of outdoor unit
is initialized correctly.
Parallel
communication
error
1. Error occurrence condition
Communication between
control printed circuit board
and communication printed
circuit board of outdoor unit
isn't performed correctly.
2. Relevant operation
1) Current operation is
continued. Error is displayed
on LED of outdoor unit.
2) If error is kept for 90
seconds since error occurs,
new communication
error (1F) occurs.
3. Clearance
The communication
between control printed
circuit board and
communication printed
circuit board of outdoor unit
is performed correctly.
3. Replace printed circuit boards with the
following procedure, and check the
operation.
(1) Replace outdoor unit communication
printed circuit board
(2) Replace outdoor unit control printed
circuit board
3. Printed circuit board
is faulty.
ERROR
CODE
Outdoor unit fan motors are
faulty.
Check outdoor unit fan motors operation.
Remove the obstruction in wind path.
If the fan motors are faulty, replace the
motors.
05-27

Fujitsu R407C Specifications

General

Brand	Fujitsu
Model	R407C
Category	Air Conditioner
Language	English