Carrier 38MVC, 38MVQ, 40MVC, 40MVQ CHART 1 -- INDOOR FAN SPEED OUT OF CONTROL

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CHART 1 -- INDOOR FAN SPEED OUT OF CONTROL
Reset main power and
restart system using remote.
Problem persists?
Replace indoor fan motor
No further action is
required
No
Yes
Check IFM output and input
on indoor board.
Values good?
Yes
Check motor connection.
Connection good?
No
Fix connection
Yes
No
Replace indoor board
Reset main power and
restart system using remote.
Problem persists?
Replace indoor fan motor
No further action is
required
No
Yes
Yes
Check motor connection.
Connection good?
No
Fix connection
Yes
No
Replace indoor board
A08166
38/40MVC, MVQ