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No
5
Checking flow
Damper checking method.
Inputting TEST Mode,
Check the damper and PCB.
6Check the F-Fan Motor.
Rotate fan using your hand.
It feel sticky, change the motor.
(cause of ice or rust inside of motor)
Result & SVC Action
(1)
(4)
(3)
(2)
1 Mode
2 Mode
1, 2 mode
Closed
Open
Not working
Damper is
normal.
(Go to the 7)
Change the
damper
Damper state
SVC Action
Test
Mode
(1) To (2)
(3) To (4)
270 ~ 330
Ω
Other
270 ~ 330
Ω
Other
It’s normal
Change damper
It’s normal
Change damper
Result
SVC Action
Test
Point
<CON7>
(1)Pin8, (2)Pin10, (3)Pin12
StickyMotor Change the motor
Point Result SVC Action
7 Check the F Fan motor voltage.
Below 7 V
0 or 5 V
(2) ~ (3)
(1) ~ (3)
Change the Main PCB
Change the F Fan
Point Result SVC Action
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