Trouble shooting 5
INDOOR UNIT
INDOOR UNIT Error Method:
Detective Actuators:
Detective details:
Forecast of Cause :
Check Point 2 :
Check Point 2 : Remove connector and check Thermistor resistance value
Check Point 1 : Check connection of Connector
Check Point 3 :
Check Point 3 : Check voltage of Controller PCB (DC5.0V)
10.0
12.5
15.8
20.2
25.9
33.6
44.0
58.2
Resistance Value (k )
Temperature
OK
OK
5.3
6.5
8.0
Resistance Value (k )
Temperature
Room temperature sensor error
Indoor unit Controller PCB
Room temperature thermistor
When Room Temperature Thermistor open or short-circuit is detected.
1. Connector connection failure 2.Thermistor failure 3. Controller PCB failure
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.
Thermistor Characteristics (Approx. value)
If Thermistor is either open or shorted, replace it and reset the power.
Make sure circuit diagram of indoor unit and check terminal voltage at Thermistor (DC5.0V)
If the voltage does not appear, replace Controller PCB.
02-08
25
°C
20
°C
15
°C
10
°C
5
°C
0
°C
-5°C
-10°C
40
°C
4.4
45
°C
35
°C
30
°C
THERMISTOR
(ROOM TEMP.)
THERMISTOR
(PIPE)
BLACK
CN4
1
2
3
4
1
2
3
4
BLACK
BLACK
BLACK
Indicate or Display:
Refer to error code table.
Summary of Contents for AO*G09LTCN
Page 4: ......
Page 5: ...1 DESCRIPTION OF EACH CONTROL OPERATION R410A WALL MOUNTED type INVERTER ...
Page 26: ......
Page 27: ...2 TROUBLE SHOOTING R410A WALL MOUNTED type INVERTER ...
Page 64: ......
Page 65: ...3 APPENDING DATA R410A WALL MOUNTED type INVERTER ...
Page 71: ...1116 Suenaga Takatsu ku Kawasaki 213 8502 Japan September 2011 Printed in Japan ...
