A.O. Smith FPS 75 - Page 34

FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK
FPS 40 and 50 SERVICE AND OPERATION cant.
BLOWER RUNS CONSTANTLY (No call for heat) cant.Trouble-
shooting cont.
RESULTS
If: then:
the fan continues to run,
replace the harness
the fan stops,
replace the gas pressure switch.