A.O. Smith fps50 Water Heater User Manual


 
FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK
FPS 75 SERVICE AND OPERATION cant.
Trouble-
shooting
cont.
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