Procom MN100HPA Heater pilot goes out - Heating & Cooling

dmartin - Unless there is a strong draft, pilots don't normally don't blow out.

What you described, sounds more like the interior of the heater needs a thorough cleaning. Especially, the pilot assembly and the Oxygen Depletion Sensor (ODS), which is part of the pilot. Also, the placement of the gas grill tank you're using to fuel the heater, may also being playing a role in it, too.
How far away is the tank from the heater and what size gas line is running from the tank to the heater and was it professionally installed? If you live in a high altitude are (above 2000 feet) this may also, be causing the problem.

I have included a link, which demonstrates the proper way to clean a pilot assembly and the ODS sensor. This should be a big help to you.
http://www.desatech.com/techDocs/Cleaning%20Demonstrations.pdf

Please let me know about my questions above and I can provide you with more information on further troubleshooting the problem.

you have a cracked heat exchanger it will need to be replaced

Is the pilot light a nice blue colour, is it noisey only at start up. Could be air mixture on pilot and pressures not set correctly

The reason for a larger tank is so the LPG can vapourise enough to supply the heater using a smaller bottle it may freeze and not produce enogh gas

all the solutions quoted have nothing to do with my problem.
if any of them applied, it wouldn't be a problem with 2 new heaters, as well as the 3 year old heater.
the flame of the pilot jumps away from the orifice after varying periods of time.

Check thermocoupler!

there is an overheat switch attached to the draft inducer box where the vent attaches to the heater. It could be getting weak. If you can jump it to test, you may be able to replace it with a universal thermodisc if you can find out at what temperature is opens. Once you figure that out, go to grainger.com and view their selection of bi-metal switches.

Hi clean pilot out and replace thermocouple pilot should stay on

You can contact Master Parts at 800-446-1446. They are the parts distributor for ProCom. I hope this helps you...

It should like you may need to replace the ODS Pilot. This comes with the thermocouple, orifice, electrode, and the bracket that holds them altogether. If you need this part you can purchase it by calling 800-446-1446. Master parts is the part distributor for ProCom units. Thank you