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My hot water heater will not stay lit. What could be the problem and would I be able to fix it?

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The thermal couple that senses the heat from the pilot and holds the gas valve in the ready condition must be bad. It is not difficult to replace. Note: When you first lite the pilot flame you must hold the button down for at least 30 seconds before releasing it. Also check the size of the pilot flame that contacts the thermocouple.

Posted on Jun 28, 2008

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Mark, It sounds like the gas valve may be bad. You may want a tech to diagnose and repair.There are other things to check also air intake and exhaust must not be plugged and the exhaust fan must be operational if equipped.
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Does the pilot light always stay lit on this water


Many water heaters today are pilotless.
Call manufacturer with model and serial number

Gene.

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Lowe's hot water heater pilot light will not stay


Hi,

If it is one of the new ones with the fancy gas control and the blinking light... does the light blink?? or not??
If it is blinking then the pilot should stay lit...
If it will not blink then the sensor is bad or not in the right place...

Or... the gas control is bad... this is happening alot...

If it is brand new... take it back...

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1 Answer

Reliance 606 natural gas water heater - model #640YORT - water does not stay hot. pilot has to be clicked to heat and then u can use hot water til tank empty and it will not continue to heat water.


If I understand correctly, the pilot light is not staying lit.
You light the pilot and water in the tank reaches temperature.
Once hot water is gone, then pilot light has to be lit again.

Gas pressure is good, and gas is flowing.
Thermostat is working at high end because it cuts off heating.
Vent is working because tank heats up.
Air intake is working.

Gas control thermostat might not be reading low temperature. Replace gas control valve.
Pilot tube might be dirty. Clean burner parts and combustion chamber, and air intake, and vent.
Backdraft might be blowing out pilot. Check for constant updraft by running water heater 5 minutes, and then light match under vent hood and see if smoke goes up.
Very hot air can put out pilot, especially when water heater located in attic. Add ventilation.
Improper vent might have water dripping back down into combustion chamber and putting out pilot light and rusting out the parts. Inspect for rusted parts and water.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot
http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf

Aug 09, 2011 | Reliance Natural Gas Water Heater Control

1 Answer

Pilot liht wont stay lit on hot water heater.


You will need a new thermo coupler to keeep the pilot ight on. It is a probe that touches the pilot flame to sense the the regulator to feed the gas flow. Upon failing it shuts off the gas to the regulator so the unit does not catch on fire. In other words it is a fail safe part that is required

Apr 12, 2010 | Water Heaters

1 Answer

Little Giant Hotomatic water heater not staying lit.


Sounds like the thermocouple/flame sensor. Change it.

Mar 09, 2017 | Heating & Cooling

2 Answers

Natural gas hot water heater not stying lit


Probably a bad solenoid in the gas valve. Higher voltage of a new thermocouple keeps it open longer but it still fails over a period of time. Look into a new gas valve for the water heater.

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Gsw heater pilot stays lit, but when the main


It sounds like your main valve. The diaphram may be loose fitting or it has a small leak.

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