Detective Actuators:
Detective details:
Forecast of Cause :
Check Point 2 :
62.9
103.3
134.2
176.0
233.2
312.3
579.6
1131.9
Resistance Value (k )
Temperature
OK
OK
OK
17.1
25.6
39.6
Resistance Value (k )
Temperature
Indoor unit Controller PCB
Heat Ex. temperature thermistor
When Heat Ex. Temperature Thermistor open or short-circuit is detected.
1. Connector connection failure 2.Thermistor failure 3. Controller 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 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 Controller PCB (DC5.0V)
Make sure circuit diagram of indoor unit and check terminal voltage at Thermistor (DC5.0V)
If the voltage does not appear, replace Controller PCB.
02-17
20°C
10°C
5°C
0°C
-5°C
-10°C
-20°C
-30°C
50°C
11.6
60°C
10.4
63°C
40°C
30°C
THERMISTOR
(ROOM TEMP.)
THERMISTOR
(PIPE)
BLACK
P1
1
2
3
4
1
2
3
4
BLACK
BLACK
BLACK
Trouble shooting 14
INDOOR UNIT Error Method:
Indoor Heat Ex. Thermistor Error
Indicate or Display:
Outdoor Unit : No indication
Indoor Unit : Operation lamp: 4 time Flash, Timer lamp: 2 time Flash
Economy lamp: Continuous flash.
ERROR CODE : [E : 42 ]
