Question about Procom QL300TYLA Heater

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Heater will not stay light

Pilot & gas system shuts down after a few minutes, we reset pilot it runs an then shut down again...

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90% of the time, this problem is caused by either a clogged gas orifice on the pilot light's gas line, or by dust/debris in the pilot air intake, as stated by tradesman1. Start by blowing compressed air through the pilot air intake, both directions. If that doesn't solve the problem, remove the pilot assembly, then the pilot orifice, and blow compressed air backwards through the small orifice. The bottom line is that anything that causes the pilot flame to reduce in size will trigger the oxygen depletion system and that will result in the unit shutting itself off. This is a safety measure. Other possible causes: insufficient gas pressure to the unit, high altitude, defective thermocouple.

Posted on Jun 11, 2009

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I had this same problem and the only thing that I found was a small spider web in the pilot air intake which had traped a small piece of lint I blew this out and the heater worked great

Posted on Jan 12, 2009

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Pilot light keeps going out


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Have a Raypak RP2100. When I turn it on the pilot lights fine but after a few minutes (~30 minutes) the heater turns off and PLT is indicated on the control panel. If I recycle the power it lights fine and...


If your Raypack (mine is a 2100 but most have the same electronic ignition pilot) lights and runs for about 2-5 minutes an then shuts off, you need to clean the pilot sensor. The pilot sensor tells the unit the Burners are running. If the pilot sensor becomes corroded, carbon, etc. the unit will light but will shut off after a few minutes as it thinks the unit is not operating properly. The unit will try to re light, but fail, and then PLT will show on the main programming screen. To fix the probelm, shut off the unit power. Remove the pilot assembly which is located at the bottom right of the unit. There is one screw holding the pilot assembly in place. Gently remove the pilot assembly. There is a fork like probe sensor (not the one with ignition and gas feed) that needs to be cleaned. Take some rough sand paper and clean it thoroughly. Re insert pilot assembly and fire the unit. If this fails, clean the sensor again. Problem solved!

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