150,000 BTU propane Reddy Heater shuts off after ignition
After running well for years, 150,000 BTU propane Reddy Heater (model PRO 155, (RLP155) starts, flame good and blue, seems fine, then when spark stops (after perhaps 30 seconds), flame (gas) shuts down.
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Re: 150,000 BTU propane Reddy Heater shuts off after...
Is there a frost line on your LP tank, if so you may need to replace the tank with a larger tank or refill your tank. This can happen if the tank your using is too low or too small (use 100 lb tank or greater). If there is no frost line it may be an issue with the thermocouple. The manufacturer offers a service manual and owner's manuals on there site. This should assist you... www.desatech.com Thank you
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Check your fuel lines and most models have a fuel filter in line. A few things come to mind one how old is the fuel? Check the screen in the nozzle assembly by removing nozzle it sits directly behind the nozzle, these corrode and affect fuel flow. While you have this tore down clean the fire-eye with windex and terry cloth rag, it may not be seeing the flame. Check the air filter at the back of the heater as well. These are common problems with these heaters.
First, locate the true model of the heater. Pro 155 only designates a series of heaters. It does not designate the actual model or technology used.
The reset (Safety Device) is the system's safety shut off. If everything is in perfect operating form the photocell looks into the chamber for a flame. If the flame goes out (flame-out), the the photocell sends a signal to the reset and the heater shuts down.
You must troubleshoot to find out whether your problem is a fuel delivery problem or an electronics problem.
My first look would be to look into the eye of the photocell for an insect or nest of some sort. Next check the fuel tank for water or debris that may be restricting the fuel flow and causing a flame-out.
Sounds as though your heater is a bit different than mune - I havwe no gas supply button, at least I don't think so. I just replaced my nozzle however at the recommedation of a recent contact to this site. It worked. The replacement packaging suggests annual replacement, so I think I was due - after ~12 years!
the ignitor is faulty, mine also did that and I noticed one night that it was shorting out right from the ignition box. I put in a new ignitor and flame sensor and it's fine now. All ignitors are basically the same you just have to do some creative wireing. reddyparts.com still has most parts for your heater.
Ok, either your fuel pressure is too low or too high.. When you light the unit, Light it in low, then turn it up slowly Just crack open your tank valve.about1/4 turn. The air in the tubes has to be displaced with gas before you get a good flame
propane heater uses a hot surface ignitor. this operates off 120 volts and glows red/orange when actuated. it stays lit throughout the heater on operation. on the backplate of the combustion chamber is a high limit with two wires coming off it. these two wires connect to the spade connectors on the flame detector cappillary. Once you establish a fire, the flame detector generates a 750 millivolt signal which is applied to the pilot/main valve assembly. My diagram will show this.