A.O. Smith FPSE50, fps50, FPS40, FPS 75 manual CAlliNG FOR HEAT, NO PilOT, Blower Runs Constantly

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FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK

FPS 75 SERVICE AND OPERATION cant.

BLOWER RUNS CONSTANTLY

(CAlliNG FOR HEAT, NO PilOT)

First make the Preliminary Checks (see page 71) then perform each of the following tests until cause of the failure is determined:

1.	Air Pressure Switch Test
2.	Vent High Limit Test	-
3.	Blower Test

4.Cable Test

5.High Limit Test

6.TH Wire Test

7.PV - MV/PV Test

8.Spark Test

9.Pilot Solenoid Test