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90-21283-02 pilot does not stay on - Ruud UBHC Air Conditioner

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Pilot light stays lit but burner on gas logs goes out


You may need a new pilot assembly. Typically one of two issues result from a bad pilot assembly:
1. The pilot won't stay on after lighting it
2. Pilot stays on but logs won't light.

Depending on the unit, you may need a new thermopile or a whole new pilot assembly.

Feb 02, 2014 | Home

1 Answer

How do I troubleshoot a Carrier Gas Furnace 58GS125-JA that Pillot stayed On but Burner will not fire


Good afternoon Victor. It is a good sign that your pilot light is staying on. That means that the gas valve is recognizing the open flam and is keeping the pilot valve open. Now onto your issue. Can you tell me if the unit is a standing pilot or intermittent pilot(doe the pilot stay on all the time or is it lit with a spark upon a call for heat)?

Dec 04, 2013 | Office Equipment & Supplies

3 Answers

Pilot lite won't stay lit


Thermostat flame sensor. Do you see a little rod next to the pilot? That is what tells the main gas valve that the pilot is lit and it is safe to give gas. Easy swap, and you can usually just pick up a generic one.

Apr 14, 2013 | Heating & Cooling

1 Answer

Pilot light won't light the low flame or stay on


If the pilot light will light at all but not have a good strong flame I would remove pilot assembly and clean it thourghly,being careful not to damage pilot orifice. Reinstall pilot and seeif you have any improvement. If pilot still won't stay lit I would replace thermocouple being careful to make sure top inch or so is in pilot flame. Hope this helps. Thanks

Nov 20, 2010 | Blue Rhino Heating & Cooling

1 Answer

I have a readyheater model 65-85 the flame will not stay lit im thinking thermal couple is there a way to test this part? or could it be another problem?


If your pilot light will not stay lit when you release pilot light button then chances are that your thermocouple is bad. Make sure that the tip of thermocouple is directly in line with pilot light. Tip of thermocouple should be cherry red if it is properly placed. If pilot will not stay lit then replace it. If you aren't sure about placement of thermocouple you can heat thermocouple with a seperate heat source. If you do this and pilot light stays lit then reposition thermocouple in pilot flame. If it still won't keep pilot burning then replace thermocouple. Hope this helps. Thanks.

Nov 19, 2010 | Reddy Heater-30-55,000 BTU Variable

3 Answers

Light pilot on Royal deep fryer. Pilot will not stay lit. Second fryer has larger pilot have no trouble keeping it lit. How can I adjust the pilot so that it will stay lit?


there is a small adjustment screw on the gas valve,turn it clockwise to increase pilot,if that does not work the vent cap on the gas regulator on the back of the unit could be stopped up,remove that cap ,clean out or replace unit can operate without it just fine.If you increase the pilot and it still wont stay lit replace the thermocouple

Feb 06, 2010 | Vulcan GR45 Deep Fryer

1 Answer

I don't know how to restart my old bosch water wizard 10p, pilot light has gone out.


get a long stick match, a flashlight remove lower inspection cover, find thermocouple and pilot light will be next to it,turn gas valve to pilot light and hold down,stick the match in by thermocouple till the pilot lights and hold valve down till pilot stays lit,this may take a minute or more,then release gas valve and see if pilot stays lit, if not retry,if it wont stay lit,the thermocouple is defective and needs replacement

Jul 12, 2009 | Bosch & Tankless LP Hot Water Heater

1 Answer

Pilot won't stay on


check to make sure that the thermocouple is in the flame pilot heats this up and sends milli volt signal to gas valve to maintain pilot and main flame if bad lowes or any whare gas water heaters are sold have them hope this helps

May 20, 2009 | Raypak Free Hydraulic Lift Gate Delivery -...

1 Answer

Pilot flickers replkaced ther-cup now pilot wont lite/stay lit.


Blow out the dust from the pilot and reposition the pilot where the flame hits the tip. more

Jan 26, 2009 | Williams 2509612 Ceramic Mid-Size Heater

1 Answer

Patio Heater pilot lights won't stay lit


crappy pilot flame (not properly heating the thermocouple), bad thermocouple, thermocouple loose where it screws into the pilot safety valve, bad safety valve magnet.

One or more of those is the problem.

Oh...there is also a saftey switch...in case it tips over. It will also cause the pilot to not stay lit (if the switch or wires that go to i are faulty)

May 30, 2008 | Coleman (5040B750) Patio Heater

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