Fujitsu Airstage V series User Manual

Trouble shooting 29-1
OUTDOOR UNIT Error Method:
SC Heat Exchanger Outlet Temp
Sensor Error
Indicate or Display:
Outdoor Unit : LED1 Flash, LED3 8 Times Blink
Indoor Unit : Operation LED Lighted Continuously (Normal Operation)
ERROR CODE : E : 00
Detective Actuators:
Outdoor Unit Controller PCB circuit
SC Heat Ex. Gas Outlet Temp. Thermistor
Detective details:
When SC Heat Exchanger Gas Outlet Temperature Thermistor is detected as
SHORTED or OPEN.
Trouble shooting 29-2
OUTDOOR UNIT Error Method:
SC Heat Exchanger Inlet Temp
Sensor Error
Indicate or Display:
Outdoor Unit : LED1 Flash, LED3 13 Times Blink
Indoor Unit : Operation LED Lighted Continuously (Normal Operation)
ERROR CODE : E : 00
Detective Actuators:
Outdoor Unit Controller PCB circuit
SC Heat Ex. Gas Intlet Temp. Thermistor
Detective details:
When SC Heat Exchanger Gas Inlet Temperature Thermistor is detected as
SHORTED or OPEN.
OK (29-1) OK(29-2)
Forecast of Cause : 1. Connector connection failure 2. Thermistor failure 3. Controller PCB failure
Check Point 1 : Check connection of Connector
p Check if connector is loose or removed
p Check erroneous connection
p Check if thermistor cable is open
>>Reset Power when reinstalling due to removed connector or incorrect wiring.
OK
Check Point 2 : Remove connector and check Thermistor resistance value
Thermistor Characteristics (Rough value)
If Thermistor is either open or shorted, replace it and reset the power.
Check Point 3 : Check voltage of Controller PCB (DC5.0V) Check Point 3 : Check voltage of Controller PCB (DC5.0V)
Make sure circuit diagram of each indoor unit and check terminal
voltage at Thermistor (DC5.0V)
Make sure circuit diagram of each indoor unit and check terminal
voltage at Thermistor (DC5.0V)
Outdoor Unit Schematic(CN38)
If the voltage does not appear, replace Controller PCB and
reset the original address.
If the voltage does not appear, replace Controller PCB and
reset the original address.
DC
RCV Liquid Surface Thermistor
Thermistor (CN19)
1(CN38:1-2)
RCV Liquid Surface Thermistor 2(CN38:3-4)
RCV Liquid Surface Thermistor 3(CN38:5-6)
SC Heat Exchanger Gas Outlet Temp.
SC Heat Exchanger
Gas Intlet Temp.
Thermistor(CN38:7-8)
Heat Exchanger Temperature Thermistor
1 (CN38:9-10)
Resistance Value ( )
Temperature (°C)
4.9
25.0
6.1
20
3.9
30
7.79.712.416.120.927.5
15.0105.00-5.0-10
06-40
(No error display)
(No error display)

Fujitsu Airstage V series Specifications

General

Brand	Fujitsu
Model	Airstage V series
Category	Air Conditioner
Language	English