Question about Teledyne Laars Laars Lite 2 Pool Heater 125,000 Btu / Propane Gas

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My pilot light lights and heats the house but then goes out and i have to relight it. Replaced the thermocouple already and had it cleaned. Any ideas? Is it the gas valve?

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Probably. Take a voltage reading off the thermo to be sure it is putting out the correct voltage and if it is you would then replace the valve. If not, try adjusting the pilots gas pressure setting. The solenoid in the valve is likely failing and is why the valve likely needs to be replaced.

Posted on Dec 13, 2009

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My empire full room heater not working like use to I can light it up it heats then after I shuts down pilot light gos out to what can I do to fix this ?


When the pilot goes out what do you have to do to get it to start again, just relight the pilot? Are you resetting any switches? First I would clean the burner and pilot. If this doesn't help then it could be a few things like a bad thermocouple or generator.

Jan 05, 2018 | Empire Heating & Cooling

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I have a standing pilot that wont stay lit.


If you have a standing pilot that wont stay lit and you have to keep relighting it, it can only be a couple of things that will do this.<br /> 1. Try tighting the thermocouple at the gas valve. (this is a thin copper line that goes from the gas valve and goes to the pilot light.)<br /> 2. Make sure that the tip of the thermocouple is in the pilot light flame.<br /> 3. Make sure that the thermocouple is clean.<br /> <br /> if you have done these and it still doesnt stay lit, buy a new thermocouple.

on Mar 14, 2011 | Heating & Cooling

2 Answers

Pilot wont light


Pilot won't light ...

If we are talking about an OLD TIME "open flame"
PILOT...

There is a lighting sequence... Push & hold the button
put a MATCH to the gas and count to 30 (thirty seconds)...

Will USUALLY get the job done...

The HOLDING for 30 seconds... ALLOWS
time for the THERMOCOUPLE to warm...
assuring the flame is active and RAW GAS is
not escaping (important safety feature)...

MOST common cure for FAILURE to stay lit: REPLACE
that THERMOCOUPLE...

Still carried by most hardware stores... it is important
not to OVER-TIGHTEN the new replacement...

Ideally... you should MEASURE THE LENGHT and
make sure you are buying the right length/size...

Amazon example
Honeywell CQ100A1013 24 Inch Replacement Thermocouple for Gas Furnaces...

eBay example
Universal Thermocouple 24 works with Most Gas Furnaces water heaters...

I buy two...
(I have a SPARE IGNITER or Thermocouple for
every oven, water-heater... heater and patio heater
that keeps my wife happy).

Carnac the Magnificent

Nov 18, 2017 | Heating & Cooling

2 Answers

Pilot light wont stay lit on gas logs


If the pilot lite comes on, but will not stay on after it has had enough time to heat the thermocouple, you got a bad or the wrong thermocouple. It does take some time to heat that thermocouple.

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1 Answer

RHFE Rinnai 551FT gas heater is not working after 7 years


see this steps and fix it. God bless you
.
If there is no heat, check the electrical service panel for a burned fuse or tripped breaker. Relight the pilot light (see below).
If there is not enough heat, adjust the burner air shutter (see below); and clean the burner ports (see below).
If the pilot light does not light or does not stay lit, clean the pilot orifice carefully with a toothpick, test the thermocouple and replace it if it is faulty (see below).
If the flame flickers, adjust the pilot (see below).
If there is an exploding sound when the burner ignites, adjust the pilot to a higher setting and clean the pilot orifice and the burner ports.
If the burner takes more than a few seconds to ignite, clean the pilot orifice and adjust the pilot light.
If the burner flame is uneven, clean the burner ports. If the burner flame is very yellow, clean the burner; open vents in the furnace room to provide more air; adjust the burner air shutter.
To light the pilot on a standing-pilot (always on) ignition system, follow the lighting instructions located near the control. Otherwise, try these steps:
Light the pilot:
  1. gasfurnace1.jpg Press and hold the pilot control knob to start the pilot. Set the control knob to the pilot position. Hold a long match under the pilot gas port.
  2. Press the control knob; the pilot should light. Hold the control knob down until the flame is burning brightly (about 30 seconds). Release pressure on the knob, and turn it to the on position.
  3. If the pilot goes out when you release the control knob, try relighting, holding the control knob down longer. If the pilot again goes out, check the thermocouple (below).
Adjust the pilot:
  1. Remove any cap covering the pilot adjusting screw on a combination control.
  2. Turn the adjusting screw counterclockwise to increase the flame or clockwise to decrease it. It is correctly adjusted when the flame envelops the thermocouple bulb by 1/2 inch and appears dark blue with a small yellow tip.
Test and replace a thermocouple:
  1. Hold the control knob to pilot and light the pilot as above.
  2. Unscrew the thermocouple fitting with an open-ended wrench.
  3. Set a multimeter to the DVC (lowest voltage) scale.
  4. Clip one multimeter lead to the end of the thermocouple tube nearest the pilot and the other lead to the fitting on the other end of the tube.
  5. If the multimeter shows a reading besides zero, the thermocouple is functioning. Replace the thermocouple tube.
  6. If there is no reading, you will need to clean or replace the thermocouple following steps 7 through 11.
  7. Release the control knob and shut off the main gas valve on the gas-supply pipe that leads into the burner. Shut off power to the burner at the electrical service panel .
  8. Remove the thermocouple from its mounting bracket.
  9. Wipe the combination control clean and install a new thermocouple, tightening it by hand, then give it a one-quarter turn with a wrench.
  10. Insert the thermocouple into the pilot bracket, being careful to not crimp the tubing.
  11. Turn on power to the furnace and relight the pilot (above).
Adjust an adjustable burner air shutter:
  1. Set the thermostat to its highest setting to keep the burner running. Once the furnace has heated up, remove the burner access panel and loosen the locking screw.
  2. Open the shutter by turning it to the right until the blue base of the flame appears to lift slightly from the burner port surface. Then close the shutter until the flame reseats itself on the surface.
Clean removable burner tubes and ports:
  1. Shut off gas and power to the furnace.
  2. Unscrew or loosen and remove the tubes from the supporting bracket.
  3. Carefully clean the tubes with a brush or vacuum, making sure not to damage the burner ports.
  4. Use a stiff wire to clear any debris from clogged ports.

Sep 30, 2012 | Heating & Cooling

2 Answers

The pilot light on our tankless water heater will not stay on.


The pilot light has a thermocouple that allows gas to the pilot light while the flame is burning. If flame goes out it shuts gas off to the pilot jet. It seems that your thermocouple is faulty and needs to be replaced if pilot light keeps going out

Sep 20, 2010 | Bosch Water Heaters

1 Answer

Have to light the pilot every morning, then furnace fires up but fan short cycles for about 4 minutes then goes off and comes back on.When the fan goes off the burners stay on. Will do this for a while....


hi clean the air filter , then clean the the afc sense at the bask of it , try this sounda as it is over heating and shutting of on the fan over heat

Feb 17, 2010 | Heating & Cooling

1 Answer

Pilot goes out after heat cycle, relight and it stays burning untill next heat cyle has run.


This sounds like a dirty pilot jet orifice or a weak thermocouple. The pilot orifice can carbon up (natural gas is a fossil fuel), become weak and keep going out whenever the main burner lights, which causes a pressure drop in the gas line. The thermocouple can also become dirty and not sense properly.

The pilot light assembly should be cleaned. The gas must be turned off and it's best if the pilot assembly can be removed. Automotive carb cleaner can be used to clean the orifice. Do not try to insert any object into the pilot orifice valve as this can result in damage.

If cleaning does not resolve the problem, replace the thermocouple first. Make sure it is installed correctly and is squarely in the pilot flame.

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I have a Charmglow ventless fireplace. When I light the pilot the furnance will run properly until it reaches temp. then it shuts off the pilot goes out and requires relighting if it relights. I took your...


In any gas heating appliance there will be a thermocouple that sense if the pilot flame is lit (lighted?).
You bypass this with the regulator by holding the button temporarily and that allows you to light the main burner. If the thermocouple is bad (not uncommon- they sit in a hot seat all the time), it will disable the gas supply.
The thermocouple should normally measure nearly zero Ohms on a multimeter; if it doesn't, it's bad.
If the thermocouple checks out OK, then the regulator has failed.

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