74
troublesHooting
11) PANTRY Room Damper Heater has trouble(OPTION)
1) Wire connector
2) Replace Heater
Is Damper Heater
normal?(about135ohm)
Is the input voltage of
IC01 MICOM #56 normal?
Start
NO
YES
YES
YES
Bad contact of connector/ insert correctly
NO
1) Recheck the wire
2) Replace PCB MAIN
NO
Normal(recheck)
Measure the voltage of Resistance
between
①
-
②
after
CN77 connector open / 1350 ohm
±
7%
ERROR Code
☞
Checking method of Flex Zone Room Damper
resistance CN77-"1"(Black)
↔
"2"(Brown)
**
Ω∞
: Open (wire disconnection, heater
disconnection) trouble / 0
Ω
: Short trouble
Start
YES
YES
YES
Initial
power On Heater off
Working
heater
3.5V ~
4.8V
MICOM
#56
condition
3.5V ~
4.8V
0V
Is MAIN PCB connector
(CN77) inserted correctly?