Manually Adjusting The Fan Motor Speed - A.O. Smith 240 T-H3J Service Manual

12-15. Manually adjusting the fan motor speed

Only 540 (T-H3)models
While the FM+ DIPswitch will automatically increase the fan speed by 6%, the fan motor speed on
the 540 (T-H3) models can also be manually adjusted. In order to perform manual adjustments to the
speed, a controller is required.
WARNING
has given consent and authorization.
Adjusting maximum fan motor speed
Section 12-1).
3. Press and hold down the "MAX"
button, press either the "Increase" or "Decrease"
desired value.
Adjusting minimum fan motor speed
Section 12-1).
3. Press and hold down the "MIN"
button, press either the "Increase" or "Decrease"
desired value.
DIPswitch setting on the 540 (T-H3) models
(Upper bank of DIPswitches)
1 2 3 4 5 6 7 8
ON
OFF
The dark square is the direction
the DIPswitch should be set to.
240 (T-H3J), 340 (T-H3S) and 540 (T-H3) models Service Manial
Decrease button
85
Page
CONFIDENTIAL
(T-H3) models will change the
540 (T-H3) models
computer board
Ver. 1.00