I have a 15 year old (+ or -) Bryant gas package unit (model 36E93) and the pilot keeps going out. If I turn the t-stat to off, turn the gas to the off position at the unit, turn the gas back on a the unit and flip the t-stat back to the "heat" position it will activate the auto ignitor and light the pilot. The burner then kicks on and everything appears to be working fine. But, it has gotten to where the pilot goes completely out and will not reignite at least once a day for the last 3-4 days. Any suggestions as to what may be causing this to occur?
Thanks for your input!...............Joel
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Re: Bryant 36E93 gas package (pilot won't stay lit)
If your unit has a thermo-coupling this is most likely the issue This little sensor sends a milli-voltage to the gas valve telling it to keep sending gas for the pilot since its lit and all is good. They wear out and the gas valve thinks the flame has gone out (whick is hasnt) and kills the gas flow.
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Under the gas valve is a removable panel. On models of that era there should also be a second panel behind the first. remove both.
the pilot light should be clearly visible.
If no pilot, turn the gas valve to OFF. wait 60 seconds. locate the tubes from the gas valve to the pilot location. turn the valve to pilot, and with a long match or grill lighter lit, place flame at the pilot location and press down on the pilot button beside the main valve.
pilot should light. If not shut off the gas and call a technician. If yes, hold the pilot button for 60 seconds, then slowly release. Pilot should stay lit. If not, shut off gas and replace thermocouple, start relight sequence over. If pilot stays lit, replace inner cover and adjust temp to 120 deg. If heater fires up, replace outer cover. Done.
If heater does not light, replace gas valve or entire unit. Water heaters have a limited life expectancy, and if my recollection is correct your unit is 10yrs past warranty.
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.
If pilot lights and flame is robust and clear blue, and pilot goes out later, then some suspects can be excluded: air in gas line, low gas pressure, thermocouple is overtightened (finger-tight + 1/4 turn), thermocouple not positioned correctly in the flame, dirty pilot tube. If flame is yellowish and small: then clean pilot tube and combustion parts. http://waterheatertimer.org/How-to-install-gas-water-heater.html#clean Remaining suspects can include: air in gas line, low gas pressure, bad gas control valve, tight house so household vent fans pull air down water heater vent that blows out pilot, hot attic with inadequate ventilation, water dripping down vent.
Turn the gas valve to pilot. Push knob down & hold. While holding, light pilot & keep knob held down for one minute. Let go of knob & see if pilot stays lit. then turn knob to on position. Boiler should then turn on.
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
YOUR WATER HEATER HAS WHAT IS CALLED A STANDING PILOT-STAYS LIT ALWAYS WHEN THE PILOT GOES OUT YOU LOOSE EVERYTHING. YOU HAVE TO REPLACE THE THERMOCOUPLE WHICH KEEP THE PILOT LIT. ONCE THE PILOT IS LIT THE THERMOCOUPLE SENDS IN MILLIVOLTS TO THE BURNER TO SAY ITS READY FOR BURNING
IF YOU ARE NOT FAMILURE WITH THIS REPLACEMENT PLEASE FIND SOME ONE WHO CAN. IT IS NOT HARD TO DO ASK A NABOR OR FRIENDS SOME HAS TO KNOW HOW. SERVICE COMPANYS ARE OUT FOR THE MONEY FOR A 10 MINUTE JOB