79
TROUBLESHOOTING
11) Ice Duct Heater(option) has trouble
1) Wire connector
2) Replace Heater
Is MAIN PCB
connector (CN51,CN79,CN76)
inserted correctly?
Is the input voltage of IC01
MICOM #50 normal?
Start
NO
YES
YES
YES
Bad contact of connector/ insert correctly
NO
1) Recheck the wire
2) Replace PCB MAIN
NO
Normal(recheck)
ERROR Code
☞ Checking method of Flex Room Damper
resistance CN51-"2"(Brown) ↔ CN79-"2"(Yellow)
** ∞Ω: Open(wire disconnection, heater
disconnection) trouble / 0Ω: Short trouble
Start
YES
YES
YES
Is Tank Water Heater
normal?(about 60ohm)
Is Tank Water Heater
normal?(about72ohm)
Heater
Connector
ohm
Ice Duct
CN51-#2
↔
CN79-#2
60ohm
±
7%
Heater
Micom
(IC01)
Initial
power On
Heater
off
Working
heater
#50
3.5V ~
4.8V
3.5V ~
4.8V
0V
Ice Duct
AW3 SM-EN 2011.3.31 2:56 PM 페 이 지 7 9 i n
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