Fujitsu R407C User Manual

ERROR
CONTENTS
CAUSE
COUNTERMEASURE
0D
1. Error occurrence condition
The condition of thermistor,
which is short or open, is
detected.
2. Relevant operation
Indoor unit is stopped. Error is
displayed on LED of indoor unit
and output to communication
bus line.
3. Clearance
Thermistor detection is other
than short or open.
1. Error occurence condition
Float SW is ON
continuously for 3 minutes.
2. Relevant operation
Indoor unit is stopped. Error
is displayed on LED of
indoor unit and output to
communication bus line.
3. Clearance
Float SW is OFF.
1. Clean drain hose.
2. Clean drain outlet.
3. Check drain pump operation. If it's
faulty, replace pump.
4. If float SW is shorted, replace SW.
1. Drain hose is clogged.
2. Drain outlet is clogged.
3. Drain pump is faulty.
4. Float SW operation is faulty
(short)
Blower
temperature
thermistor
error
11 Drain abnormal
1. Error occurence condition
Room temperature
thermistor detects higher
than 60 C continuously for
30 minutes or longer during
indoor unit operation.
2. Relevant operation
Indoor unit is stopped. Error
is displayed on LED of
indoor unit and output to
communication bus line.
3. Clearance
It's cleared by turning off the
power .
12
Room
temperature
abnormal
1. Error occurr condition
Fan speed feedback of large
ceiling type, slim body cassette
type and ceiling wall type is
lower than 1/3 of target speed.
2. Relevant operation
Indoor fan is stopped, error
is displayed on LED of indoor
unit and out put to communica-
tion bus line.
3. Clearance
It's cleared by turning off the
power.
13
Indoor unit fan
error
1. Check if the connector of blower
temperature thermistor loosens or
comes off.
2. Check resistance of blower
temperature thermistor. If it's not
normal, replace thermistor.
1.Connector connection is
faulty.
2. Blower temperature
thermistor is faulty.
1. Check if the connector of room tempe-
rature thermistor loosens or comes off.
2. Check resistance of room temperature
thermistor. If it's normal, replace
thermistor.
1. Connector connection is
faulty.
2. Room temperature
thermistor is faulty.
1. Check the wiring of indoor fan motor
lead wire .
2. Check if rated power supply voltage
is applied.
1. Indoor fan motor lead wire
connection is faulty.
2. Power supply voltage
abnormal.
1. Error occurrence condition
Communication can not be
performed between standard
wired remote controller and
indoor unit or between indoor
units in same remote controller
group for a certain time.
2. Relevant operation
Error is displayed on LED of
indoor unit.
3. Clearrance
Standard wired remote
controller communication
is recovered.
18
Standard wired
R.C. communi-
cation error 1,2
1. Check if communication line is
connected to each indoor unit. Check
if communication line is disconnected
or loosen.
2. Replace control printed circuit board of
indoor unit.
3. Replace standard wired remote
controller printed circuit board.
1. Communication line is not
connected, connection fault,
or disconnection.
2. Indoor unit control printed
circuit board is faulty.
3. Standard wired remote
controller printed circuit
board is faulty.
ERROR
CODE
05-12

Fujitsu R407C Specifications

General

Brand	Fujitsu
Model	R407C
Category	Air Conditioner
Language	English