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i have an ole reznor in my garage been workiing for ten + years no problems , mine is gas , the pilot light does go out after it switches to main burner like ten seconds later , but does light back up when thermostat shuts main off ( i had to go look to make sure) not a real big flame maybe like an inch or so , has a spoon shaped air shield around it , maybe yoours is missing ?
rapidly? seconds or minutes.
Make sure you select hot water boiler in the thermostat setup. That can cause short cycling. Boiler need a longer cycle range. If not, remove stat and jump wires, Isolate the problem, is it stat or boiler?
If you cannot cancel the cycle then turn power off and back on.
Then try to program a short cycle from panel and see if it works.
I am assuming when you say that it keeps running you mean the water keeps churning and does not drain out.
If short cycle works ok then the dishwasher is not heating water to the correct temperature. Need to check thermostat or heater.
First check that exhaust, air ducts and filter are not blocked and free from lint. Make sure that the dryer has proper ventilation.
If there is no lint, there is proper ventilation and the machine keeps overheating, then either one of the thermostat is shorted or there is a contact in the wiring to the heater element.
A shorted cycling thermostat is quite a common fault. Testing is done reading impedance across the thermostat contacts. A shorted thermostat will read zero or an impedance smaller than 0.5 Ohms. If the cycling thermostat is shorted, the other thermostats in the heater assembly must also be tested.
If thermostats are OK check wiring to the heater looking for a contact that can keep the element 'hot' even when not directly energized from electronic control. Such fault is not common in recent appliance models.
If there is no problem concerning heater assembly you may have a defective control board.
One thing you might check is to make sure there is not cold air blowing across the thermostat from one of the vents. I've seen this many times make the thermostat short cycle.
Some less expensive thermostats may be programmed to short cycle. If you have instructions available for the thermostat, try to find information or the "heat anticipator". It may have an adjustable setting.
Any time a thermal cut off blows, it's because the cycling thermostat is bad. When it's bad, the machine cycles off of the thermal cut off rather than the cycling thermostat allowing the dryer to over heat. The thermal cut off is a re-setting safety and is not made to cycle off of. The thermostat you are looking for looks like a high limit thermostat but it cuts power to the element at a lower temp. Around 158 degrees + or - 25 degrees. It's located close to the high limit. It's a normally closed switch that opens on the rise and it will show closed now but the problem with it is that will not open. Replace it and your problem will be solved. Good luck.
Don't know what model Reznor Waste Oil heater you have but I happen to own a Reznor RA235. 235,000 BTU. If there is no oil being pumped up I would first check to see that the filter isn't clogged where the oil sucks up from the tank. There should be a gauge on yours with different color codes as to when the filter must be changed or cleaned. I already had to replace the pump on my Reznor RA235 as the pump went bad a couple of years ago. You can tell if it is pumping or not. There is also a filter built right outside of the pump on mine and one up on top of the unit that need to be cleaned at times. The manual shows all of this.
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