A.O. Smith fps50, FPSE50, FPS40 manual Trouble- PilOT PROBLEMS, FPS 75 SERVICE AND OPERATION cant

FPS/FPSE/FPD TECHNICAL TRAINING AND SERVICE WORKBOOK

FPS 75 SERVICE AND OPERATION cant.

Trouble- PilOT PROBLEMS

shooting cont.

The following are possible causes of pilot problems:

1.An open E.C.O. (high limit) will not allow the heater to relight. (See page 84).

2.Incorrect pilot gas pressure: it should be 3.5" for natural gas and 10" for propane.

3.Excessive equivelant foot length on vents can cause pilot outages.

4.Incorrect pilot position; the pilot should engulf the tip of the flame sensor 3\8" to 1\2".

5.A leak in pilot tube will cause candling.

@1995

A.D.Smith	92	Technical Information
Water Products Co.		Irving, Texas