Thermistor Characteristics (Rough value)
If Thermistor is either open or shorted, replace it and reset the power.
Detective Actuators:
Indoor unit Controller PCB
Heat exchanger (MID) Thermistor
Detective details:
Heat exchanger (MID) thermistor is open or short is detected always.
Forecast of Cause :
1. Connector failure connection 2. Thermistor failure 3. Controller PCB failuer
Check Point 1 : Check connection of Connector
Check if connector is loose or removed
Check erroneous connection
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
OK
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)
If the voltage does not appear, replace Controller PCB and execute the check operation again.
DC
BLACK
BLACK
BLACK
BLACK
1
2
1
2
CN3
CN1
1
2
3
1
2
3
RED
WHITE
H/E Thermistor
Room Temp. Thermistor
02-09
Trouble shooting 7
INDOOR UNIT Error Method:
Indicate or Display:
Indoor Heat Ex. Thermistor Error
Refer to error code table.
31.7
39.6
49.7
62.9
80.3
103
134
176
17.1
20.9
25.6
Resistance value (k )
Temperature (°C )
Temperature (°C )
0
40
45
50
5
10
15
20
25
30
35
3.09
4.19
5.78
8.12
11.6
60
70
80
90
100
Resistance value (k )
Содержание AO*G24LFLAO*G24LFCC
Страница 3: ......
Страница 4: ...1 DESCRIPTION OF EACH CONTROL OPERATION R410A WALL MOUNTED type INVERTER ...
Страница 25: ...2 TROUBLE SHOOTING R410A WALL MOUNTED type INVERTER ...
Страница 63: ......
Страница 64: ...3 APPENDING DATA R410A WALL MOUNTED type INVERTER ...
Страница 75: ...1116 Suenaga Takatsu ku Kawasaki 213 8502 Japan Oct 2012 Printed in Japan ...