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Vangaurd vn3000 nat gas heater

Heater will light and go completely out in 2 mins,ive replaced the ods....need help can keep buying parts

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Posted on Jan 02, 2017

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SOURCE: have a problem

Over the summer months dust gets into the ODS safety pilot. You must blow out the dust and whatever is diminishing the dlame ans causing the premature shutdown. CLICK HERE for photos of where you must clean.

Posted on Feb 09, 2009


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The heater will shut down after about ten seconds.

Graham there are a couple of things that could be causing what you described.

The Oxygen Depletion Sensor (ODS) which is part of the pilot assembly could be clogged with dust, lint or pet hair. When this happens, the ODS reads the oxygen level as unsafe for operation. Using canned compressed air with a straw nozzle (like you clean your computer with) to blow out the ODS and the pilot tip should solve the problem.

Also, if the air louvers of the cabinet of the heater may also be clogged. Keeping them clean is important.

The Thermocouple, which keeps the pilot lit, may have failed. In which case it will need to replaced.

I hope this helps you to further troubleshoot & solve the problem. Thanks for choosing FixYa.

Sep 09, 2011 | Rinnai RHFE-1004FA 38,400 BTU Energy Saver...

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I have a everdure 6 burner gas heater. its pretty old and works sometimes. the problem is that it take a while to turn on and once it started it just turns its self off with in minutes. this happens...

Your flue-less gas heater may simply need a a good interior cleaning and servicing. From what you described it sounds like the Oxygen Depletion Sensor (ODS) may be clogged with dust, lint etc. The ODS is part of the pilot assembly and constantly reads the oxygen level in the room, when the heater is in use.If the oxygen level drops to 25% the ODS shuts the unit OFF by closing the gas valve. This can occur if the ODS is dirty, because it's falsely reading the oxygen level.

One other thing that can mimic this problem is a faulty Thermocouple. With age, they wear out. It's also a safety feature that controls the gas flow to the pilot.

Everything I have mentioned is repairable. But, if you want to make it a DIY project, it will require some dismantling of the heater cabinet to access everything and replace parts. If the heater is as you say "pretty old", you may want to consider buying a new heater. Sometimes, it's just not worth the time and effort to repair an old heater.

Hope this helped you to troubleshoot and solve the problem.

May 27, 2011 | Heating & Cooling

1 Answer

Hello. I fire it up. It runs one minute and shuts off. Piolet and all. I start it up. Runds 5 min and same thing.

Here's the problem. The Oxygen Depletion Sensor (ODS) which is part of the Pilot is clogged with dust, lint and/or pet hair. When that happens, the ODS sensor reads the oxygen level as unsafe for operation and shuts the unit down, by closing the gas control valve. This problem occurs quite often when the heater doesn't receive Annual Maintenance and Service.

To solve this problem yourself. You will need to dismantle (remove) the front part of the heater, carefully remove the log set and you will be able to access all of the interior workings that need to be cleaned. A Shop Vac with a brush attachment and a can of compressed air with a straw nozzle (like you clean your computer with) works well in completing the clean process. Be sure to vacuum all of the interior of the firebox, as well as the burner(s). Be sure to clean/vacuum thoroughly. While you have the logs out, vacuum them on all sides. To clean the pilot, use the can of compressed air with the straw nozzle attached and blowout the pilot tip with a quick blast of air. Look down the pilot from the tip (where the flame comes out) and about 2/3rd's of the way down, you will see a small hole in the side of the pilot. That's the ODS Sensor. Place the tip of the straw nozzle just barely into that hole and give it a quick blast of air. You will probably see debris blow out the other side. Once you have completed all of this, start to reassemble the heater. Be sure to install the logs identically to the way they were original installed. Failure to do this correctly, will cause sooting problems. If in doubt, consult your Owners Manual. Once you have completed reassembling the heater, light the pilot. Be sure to hold the Pilot Control Knob in for one minute, before releasing it and turning it to ON. If everything now works as it should, pat yourself on the back, As you just completed what's called "Annual Maintenance". This should be done every Fall, before firing the heater up for the season. If you have house pets, you should do this twice a season. First in the Fall and again in mid-January.

If all of the above did not solve the problem, the Thermocouple, which is part of the Pilot Assembly has started to fail and needs to be replaced.

Hope this helped you solve the problem. Please let me know and be sure to rate my response to you. Thanks!

Apr 14, 2011 | Procom QL300RYLA Heater

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I replaced the thermalpile in my wall heater and when I turn the stat up the pilot goes out what do I do

The air intakes of the burner may be clogged or you wired the "thermopile" to the wrong contacts on the control valve.

You didn't mention if this was a vented or vent-free heater. If it's a vent-free heater the same things listed above still apply. However, it may be that the Oxygen Depletion Sensor (ODS) which is part of the pilot may be clogged with dust, lint and/or pet hair. When the T-stat calls for gas to light the burners, the ODS senses there's not enough oxygen for safe combustion and closes the gas valve.

Also, gas pressure to the heater may be low. Only enough to keep the pilot burning, but not enough to ignite the burner(s).

Hoe this helps to head you in the right direction on further trouble shooting the problem.

Mar 02, 2011 | Heating & Cooling

1 Answer

Can not get the pilot light lit again

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Have a problem

Over the summer months dust gets into the ODS safety pilot. You must blow out the dust and whatever is diminishing the dlame ans causing the premature shutdown. CLICK HERE for photos of where you must clean.

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