Fujitsu AO*G09KXCA Series, Инструкция по эксплуатации

Страница: 54 / 110

Trouble shooting 17
OUTDOOR UNIT Error Method:
Detective Actuators: Detective details:
Forecast of Cause :
OK OK
OK OK
Heat Ex. Liquid Outlet Thermistor Error
Outdoor unit Main PCB
Heat exchanger temperature thermistor
When Heat exchanger temperature thermistor open or
short-circuit is detected at power ON or while running the compressor.
1. Connector connection failure 2. Thermistor failure 3. Main PCB failure
Check Point 1 : Check connection of connector
Check if connector is removed.
Check if connector is erroneous connection.
Check if thermistor cable is open.
>> Upon correcting the removed connector or mis-wiring, reset the power.
Check Point 2 : Remove connector and check thermistor resistance value
Thermistor characteristics (Approx. value)
If Thermistor is either open or shorted, replace it and reset the power.
Check Point 3 : Check voltage of Main PCB (DC5.0V)
Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor (DC5.0V)
If the voltage does not appear, replace Main PCB.
02-21
7.7
5
9.7 12.4 16.1 20.9 27.5 49.2 Resistance value (k )
0 -5 -10 -20
92.3
-30 Temperature (°C ) 10 15
0.9 1.3 1.8 2.6 4.0 Resistance value (k )
70
0.7
80
0.5
90 60 50 40 30
6.1
20 Temperature (°C )
Indicate or Display:
Indoor Unit :
Operation indicator: 7 time Flash
Timer indicator : 3 time Flash
BLACK
BLACK
BLACK
BLACK
Thermistor (PIPE temp.)
1
2
3
4 1
2
3
4
P1
Error code: [ E : 73 ]
Economy indicator: Continuous Flash