Honeywell F300, Operation, Page: 3 / 3

Note:
The last bypass procedure (1990 -2006) will light the neon indicator and bring the power supply to full power but it does
not fool the optional W8600F remote indicator. The LCD indicator will remain off itndicating the air cleaner is not running.
Permanently disabling the AFS is outlined the Honeywell F50F Product Data Manual, see page 11.
Air Flow Switch Voltages
We measured these voltages
WIRE OFF ON
Black gnd gnd
Gray 13.7 vdc 13.2 vdc
Orange 0.7 vdc 13.2 vdc
Violet 5 vdc 0 vdc
Dimensions
We measured the 4074ETH:
Four 5/32” dia holes on 2-23/32” center.
Overall size 3-5/16” square. Height 15/16”
Tech Note ©
October 2013
Honeywell Air Flow Switch (AFS)
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