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Piezo ignition combustion tripped

Will light for only a few seconds and goes out again

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It sounds like the thermocouple is going out. That's the solid copper line that the pilot heats up telling the gas valve when to open and close. You could try to replace it or pull burner from under heater and using a dollar bill clean the tip and replace. If its not completely out, this should do the trick

Posted on Feb 25, 2014

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No spark visible through mica glass inspection cover when piezo igniter button is operated.


Piezo igniters can fail for a few reasons. Often they short or spark in the wrong place. Sometimes they can be corroded. Try cleaning it and see if it will spark. Otherwise, you might need to replace it or just use matches. Is your heater under warranty?

Jun 11, 2015 | Water Heaters

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Self igniting hot water heater won't reset.


Today's water heaters have sealed combustion chamber and piezo igniter.
If igniter is bad, then water heater will not light... replace igniter.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#pilot
http://waterheatertimer.org/How-to-light-gas-water-heater.html

Gene h

Mar 31, 2014 | Water Heaters

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Bosch aquastar a125b piezo wiring diagram


Piezo igniter only needs 1 wire to cause spark.
The other wire might connect to electronic gas control to report error, but brand type and age of product is not described in question.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

Gene h

Mar 18, 2014 | Water Heaters

1 Answer

Piliot light goes out


If pilot light has gas, then ECO is not tripped so water heater has not experienced overheating event.
Remaining suspects include bad thermocouple, bad air quality, not enough air, bad vent, water dripping down vent, backdraft down vent, hot attic with bad ventilation, low gas pressure, air in gas line, dirt water or debris clogging gas control thermostat, bad gas control thermostat, tripped FVIR, dirty pilot orifice, dirty combustion parts, damaged combustion parts from exposure to trace chemicals like bleach and wax.
Suspects include one or more from list above.

Start with thermocouple.
Open following links:
http://waterheatertimer.org/How-to-test-water-heater-thermocouple.html
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

Oct 02, 2011 | Water Heaters

1 Answer

Having problems with models sutting down. Relates to combustion shut off system. Explain how system works, with corrective action, especially draft system. Pilot ignites, burner operates for second or two...


As a general rule with Rheem gas water heaters, the manufacturer suggests calling trained service technician and their products do not have specific service bulletins.
I cannot explain combustion shut-off adequately. Post question on water heater forum.
http://www.thetankatwaterheaterrescue.com/forums/

Most likely the combustion and combustion parts need cleaning and maintenance, as a start point.
Gas water heaters today require yearly cleaning and maintenance.
That work would cover possible causes and combination of causes: from air in gas line, faulty venting, inadequate air supply, dirty parts, overheating, leaks, exposure to chemicals, corrosion, faulty gas control valve thermostat, sediment build-up.
You have a standing pilot light that is working, so gas supply sounds correct, and ECO is not tripped, so cleaning is major suspect right off.

Light a match under the vent hood and check if smoke drafts immediately upward.
Your water heater vent has a natural upward draft that pulls combustion by-product upward so the poison gas is vented outdoors to kill the world slowly instead of remaining inside the house. If vent is clogged, the air flow might not support combustion. Likewise if water heater does not have adequate incoming air supply, for example a tightly sealed house, then combustion is not supported. Also if you store bleach and pool chemicals and other assorted chemicals in trace amounts in same room or nearby, the burning chemicals will corrode combustion parts so they no longer perform.
http://waterheatertimer.org/images/Test-water-heater-vent-400.jpg

See general illustrations for cleaning combustion parts, and read 2 pdf files about cleaning typical gas water heaters.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot
http://waterheatertimer.org/9-ways-to-save-with-water-heater.html

Read Reliance gas water heater handbook. It may or may not apply to your circumstance and heater.
http://waterheatertimer.org/pdf/Reliance-2006-Service-Handbook.pdf

Jul 11, 2011 | Rheem 30 Gallon FVR NATGAS Water Heater...

1 Answer

Can no light up a new Rheem 22V40FN water heater


Air in system. Make sure there is no sources of ignition and loosen the supply line at the heater and purge all air. Mske sure your source valve is open. then turn off yje heater after tightening the line. Let sit in off position for 15 minutes. Then turn therm knob to on slowly and then over to pilot, depress pilot button and hold a ffew seconds. Pilot should light. If so, hold for a few and then release and turn ti on position. Good Luck.

Jun 14, 2009 | Rheem 40 Gallon FVR NATGAS Low WATER...

2 Answers

Bosch water wizard 600 pilot light out


First check your gas supply, gas in bottle or lines? I know, this is basic & I'm not having a shot at you, but you'd be surprised at how many times it gets overlooked.

If you do still have gas supply, evident by that low hiss when you hold the pilot feeder button in (you might have to lean in close to hear it), then you need to check that the piezo is working. This is the bit which produces the spark to ignite your pilot. You will be able to see it sparking at the pilot outlet when you push the button (if you're looking in the right spot).

Ok, you have gas & a working spark? Not sure which buttons to press?

You mentioned the manual no longer being in a helpful condition...do you know which of the 4 buttons, 2 taps, 1 slide control & 1 dial do what?
Well just in case, here we go in simple form... first button on the left is the pilot feeder (lets gas through the pilot), second button from the left is the 'ON' button, third from left is the 'OFF' button & the fourth from the left is the piezo ignite button (gives you that much needed spark!). The slide controls your flame (how much gas gets fed to it). The dial, below the pushbuttons & slide, controls how much water flows through the system which then helps regulate the heat. Make sure the taps on your gas & water lines to the unit are on. There you go...2 taps = gas & water supply, 4 buttons = pilot gas, on, off, piezo (spark), 1 slider = gas/flame control, 1 dial = water flow control.

Ok let's see if we can light it! Water & gas supply turned on, slider set about 25% from left, dial set roughly in the middle, push in button 1 (1st from left) & hold in for about 10 seconds, you should hear a very faint hiss from pilot area. Yes? OK, keep holding button 1 in & press & release button 4 several times until pilot lights, you may not see a difference but if you can't see it and it does light you will hear the faint hiss change to a soft fluttering sound as the flame consumes the gas. Still OK? if so then the next step is to push in button 2 quite firmly & then release button1 as well. If all works as planned you will shortly have hot water supply restored.

If the above has not worked then your hot water service may just need a service to clean everything up & maybe replace a few worn or excessively corroded parts. Otherwise ,if there are no blockages in supply lines etc, then it may be time to replace it.

You neglected to say how long you've had it.

Cheers, hope this has helped.

Dennis

Feb 18, 2009 | Water Heaters

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