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  • I’ve a FryMaster FPPH455CSD, Propane Gas which the error (Help) will display from time to time. Please advise what to look for?

     ectofix updated 2 years, 8 months ago 1 Member · 5 Posts
  • guest

    July 15, 2017 at 12:00 am

    I’ve a Fry Master FPPH455CSD, Propane Gas which the error (Help) will display from time to time. Please advise what to look for?

  • fixbear - ADK NY

    July 15, 2017 at 7:49 am

    Drain valve handle is not closed all the way.

  • masterkitchen

    July 15, 2017 at 8:24 am

    Thank you Fixbear, anyother suggestion if it is not the D Valve Handle?

  • fixbear - ADK NY

    July 15, 2017 at 10:05 am

    Gas ignition problem?  In other words, failure to heat.

  • ectofix

    July 15, 2017 at 1:23 pm

    An intermittent problem?  Lovely…


    The most common ignition problems on that fryer are:

    1. possible connection issues within its flame proof circuit
    2. a problem with the ignition, gas supply or air flow components for the burners


    Here’s how I address ignition failure problems on those fryers:


    For number 1,

    • Remove and inspect the ignitors.  Look for cracked insulators and heat distortion of the enrichment tube.  Replace the ignitor(s) if either is the case.
      • Otherwise, you call polish oxidation off the old flame sensing rod with a Scotchbrite pad.
    • While the ignitors are out, shine a flashlight up inside the openings to the burner chambers for an inspection.
      • There should NO signs of grease in there.
        • If there is, then you have a cracked vat.  Replace the vat.
      • Inspect the burners.  If you see any of the follwing signs, replace the burner(s):
        • The burner tile faces should be flush with each other (none sticking out further than another).
        • As best you can, see if any tiles appear cracked. 
        • The insulation between the burner tiles shouldn’t be sticking out 
    • After that burner inspection, install the ignitors using new gaskets.  Make sure the screws holding them in are clean and tight.  Those are your ground connection for the flame sensing and ignition circuits.
    • Make sure there are good, clean, tight, corrosion-free connections of the flame wires to the ignitors.


    For number 2,

    • Check condition of the ignition leads.  Replace them if they’re damaged.
    • Check the 24v connections to the gas valve.  Make sure they’re clean and tight.
    • Inspect the gas valve vent.  There’s probably a vent tube screwed into it.  Remove the vent.  Make sure it and the vent opening in the valve are not clogged with grease.
    • Inspect the burner blower.
      • Its air shutters should be clean.
      • The blower shutter openings should be set about 1 1/2″ OPEN.
      • Make sure the blower input connector is clean and tight.
    • Behind the control panel, remove the latch relay from the interface board for inspection.  Its cover is somewhat transparent.
      • If the relay contacts are pitted, there will be black carbon buildup inside the relay cover next to the contacts.  Replace the relay if you see this.
    • Pull the fryer out from the wall and make sure the gas hose quick-disconnect is fully seated.
    • Connect a manometer to the gas valve and a micro-ammeter in series with one of the flame sensor wires.
      • Operate the fryer.
      • Check gas pressure.  It should be 3″WC.  If not, then adjust it there.
      • Monitor the flame current.  After an ignition sequence has begun, flame current should quickly rise above the module’s lockout threshold (within four seconds).
        • To check the other flame wire, turn the fryer OFF and connect you micro-ammeter lead to it like you did the other.  Turn the fryer back on and repeat the flame current test.
      • After the fryer temperature has surpassed the melt cycle and sustains contact burner operation, monitor your gas pressure and flame current reading for a bit.


    There’s other possibilities such as a failing drain switch, poor connections to the drain switch, a hi-limit that’s on its way to failure, intermittent grounding within the interface board, a defective ignition module or gas valve.

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