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Hobart C-44 gas dish machine backfire

We are looking at a c-44 gas machine that had the board changed but it fires for several seconds then the delay and starts again for several seconds-then the delay and starts again running for several seconds and then it drops out.
sometimes it will spark then a bang a slight delay and sparks and then a bang again--is it possible one of the gas valves are getting stuck .
The flue is clear-no warter in the pan below-good vent above unit--the blower motor is working-even tried blocking off some flow.
the cover is sealed and on tight-could it be the new board is bad.
could the valves modulate mechanically from a spring problem and the 24 volt coil is ok-it was checked and it is ok.

thanks

Posted by on

  • jd182 Jun 07, 2008

    not sure-however one of the techs replaced the ignition cable and probe and it is working for now
    however before replacing the part the probe and spark seemed to respond to a propane torching normally

    when the probe was in it was going on 7 seconds then delay-another 7 sec then delay

    sometimes it would delay then explosion--delay then explosion
    hopefully it went away with the new spark assembly
    have you had this problem and what could be other causes
    thanks

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How old is this unit?

Posted on Jun 06, 2008

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1.Low water pressure — check for clogged hose strainer; check that site water pressure meets minimum flow pressures.
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If this doesn't help let me know and I will get to the bottom of it....good luck and thanks for rating my effort...The Fang.

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Hi drogers77,

I'm not a Hobart technician, but here what I founded in my manual for the LX30 error message:

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1. Low water pressure - check for clogged hose strainer; check that site water pressure meets minimum flow pressures.

2. Make sure probes are clean

3. No water pressure - main water supply valves may not be working

4. Drain valve open - turn machine OFF to drain machine, then ON. Repeat twice (this assists in clearing any drain valve obstructions). Wait for machine to reach READY mode and press WASH. Slowly open door several seconds later and note water level. Close door; 30 seconds later, open door slowly and check that water level is the same as it was. If not, repeat the OFF-ON procedure. If problem persists, call your local Hobart Service Office.

5. Delime machine.

Hope it will help you.

pepsicrazy

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