Fujitsu AOYG07KMTA, Руководство по обслуживанию

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Detective Actuators: Detective details:
Forecast of Cause :
OK OK
OK OK
Indoor unit Main PCB
Heat Ex. temperature thermistor
Room temperature thermistor
4-way valve
When the indoor heat exchanger temperature is compared with
the room temperature, and either following condition is detected
continuously two times, the compressor stops.
1. Connector connection failure 2. Thermistor failure 3. Coil failure 4. 4-way valve failure
5. 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 mis-wiring, reset the power.
Check Point 3 : Check the solenoid coil and 4-way valve
Remove P60 from PCB and check the resistance value of coil.
Resistance value is 1.88k 2.29k (at 20°C).
>> If it is Open or abnormal resistance value, replace Solenoid Coil.
02-25
Cooling or Dry operation
[Indoor heat exchanger temp.] - [Room temp.] > 10degC
Heating operation
[Indoor heat exchanger temp.] - [room temp.] < - 10degC
If the same operation is repeated 5 times,
the compressor stops permanently.
[ Solenoid coil ]
Check each piping temperature,
and the location of the valve by the temperature difference.
>> If the value location is not proper, replace 4-way valve.
[ 4-way valve ]
OK OK
Check Point 4 : Replace Main PCB
If Check Point 1- 3 do not improve the symptom, replace Main PCB.
Check Point 2 : Check each thermistor
Isn’t it fallen off the holder?
Is there a cable pinched?
>> Check characteristics of thermistor (Refer to Trouble shooting14,15),
If defective, replace the thermistor
Trouble shooting 22
OUTDOOR UNIT Error Method:
4-Way Valve Error
Indicate or Display:
Outdoor Unit : No indication
Indoor Unit : Operation lamp: 9 time Flash, Timer lamp: 9 time Flash
Economy lamp: Continuous flash.
ERROR CODE : [E : 99 ]