Fujitsu AOU18RLB - Discharge Thermistor Error

Trouble shooting 12
OUTDOOR UNIT Error Method:
Detective Actuators:
Detective details:
Forecast of Cause :
62.5100.9129.8168.6221.1292.9Resistance Value (k )
Temperature (°F)
OKOK
OKOK
40.0
2.07.8 3.6 6.4 4.3Resistance Value (k )
Temperature (°F)
Discharge Thermistor Error
Outdoor unit Main PCB
Discharge pipe temperature thermistor
When Discharge pipe 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 erroneous connection.
Check if thermistor cable is open.
>>Upon correcting the removed connector or miss-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.
194°F176°F158°F
26.3
104°F
17.8
122°F
12.3
140°F
86°F
212°F
2.6
230°F
41°F32°F23°F14°F
68°F50°F
248°F
Indicate or Display:
THERMISTOR
(PIPE)
THERMISTOR
(DISCHARGE)
THERMISTOR
(OUTDOOR)
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
1
2
3
4
1
2
3
4
1
2
3
1
2
3
CN61
CN62
02-15
Outdoor Unit : No indication
Indoor Unit : Operation lamp: 7 time Flash, Timer lamp: 1 time Flash
Economy lamp: Continuous flash.
ERROR CODE : [E : 71]