Publication No. 1-07-184
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Replacing mod motor
The Model M7284C-1000 Honeywell motor replaces all inoperable mod motors used on past and present Heatec HC and HCS heaters with modulating burner. Do not use a resistor harness or resistor board (Figures 11 and 12) with this motor.
Be sure to use the new wires that come with the new mod motor (Figure 13) and connect directly to the low-fire and high-fire switches. Do not use the old wires. Although the old wire colors may be the same as the new wires they may not be connected to the same terminals on the low-fire and high-fire switches.
See wiring diagram (Figure 9A) and cover of mod motor (Figure 14) for wiring information. Note differences in terminal markings indicated below:
