Question about RTO Bernzomatic Brushed Nickel Patio Heater

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I have a bernzomatic pato heater mo.ph325on, could not light and no clicking, replace battery and now clicking but still will not ignite.

I held button down in off position in case of air lock, no help. Disconnected hose from tank and turned on gas and could smell propane, reconnected. Disconnected tube from block and turned on gas, no propane smell.

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Posted on Jan 02, 2017

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SOURCE: I have been trying to ignite heater but it will

I had the same problem and fixed it with a small piece of Aluminum foil, an adjustable wrench, and a #2 screwdriver... If you're "handy", this is an easy 30 minute fix. I included a picture that may help you visualize the "fix" before attempting. In short, I'm not certain what happened or why/how it broke, but if you remove the valve/manifold you can blow air into the gas inlet (with your mouth) and adjust the knob and you will see that only when it's all the way pushed down you can blow air through the valve, otherwise n air/gas can not get through. Thats why the pilot will light, and when you let the knob out the flame goes out. If that is your problem, this fix will work. After I put the foil (explained below) to extend the brass pushrod that allows gas to enter the manifold, it worked as expected allowing air/gas to enter only when on "light" and through the LO to High sweep.

Step 1) Shut off gas and remove tank.

Step 2) Remove the black gas On/Off knob (pulls off)

Step 3) Remove the three on thumb screws inside the tank storage area to allow the entire top/heater mesh to slide down (like intended to store it, or how it came shipped in the box). Sliding this down will expose the bracket the manifold/valve mounts to.

Step 4) Remove the spring clip and washers from the stem on the valve. Remember the order, and dont lose any parts as this works your igniter. (I usually take a picture with my phone on these types of things, so I can recall how they went.)

Step 5) Carefully remove all the gas lines from the valve and the grounding wire at the rear of the manifold.

Step 6) Remove the two small Phillips screws that hold the valve to the bracket.

Step 7) Remove the valve from the unit.

Step 8) Remove the two small #2 Phillips screws that hold the aluminum and the brass parts together on the valve.

Step 9) Give a slight tug and the two pieces will come apart easily. A small aluminum part may fall out; this is okay as it only goes in one way.

Step 10) Take a small piece of aluminum foil 1 1/2 inches by 7 inches or so, and wadd it tight into a ball. I used pliers to get it tight and small (bigger than BB, but smaller than the end of a pencil eraser) You will see that it needs to go inside the channel where the brass stem will slide in and out of the "slotted" tube on the stem.

Step 11) Put it back together and try the "blow test" again to see if the aluminum ball was the right size to make it work ...again. I had to do this a few times to get the right size "extension". Also, be sure to blow into the "main" gas inlet and adjust the gas control knob through the push in and "light" the pilot mode all through the Hi/Lo sweep.

Reverse your steps and give it a try. Mine lights every time and works perfect. ...actually better than new, as it was always a task to light.

Hope this was helpful, as this was my first post...
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Posted on Dec 15, 2009

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SOURCE: i have a bernzomatic patio heater. i can get the

See my reply on this other post. http://www.fixya.com/support/t3536737-trying_ignite_heater_but_will

Posted on Dec 15, 2009

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SOURCE: Pilot light won't light with igniter or match.

Pilot is probably clogged with the tinyest bit of dirt ... blow it out with compressed air.

Posted on May 16, 2010

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SOURCE: bernzomatic patio heater will not light?

these had problems with purging air out of the system.that may take a while and make sure you have spark.

Posted on May 03, 2012

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1 Answer

Bernzomatic patio heater will not light?


these had problems with purging air out of the system.that may take a while and make sure you have spark.

May 01, 2012 | RTO Bernzomatic Brushed Nickel Patio...

1 Answer

I have a bernzomatic 94499 patio heater does anyone know where I can find an owners manual? The pilot will light but not the burner? There is a brass fitting towards the back that seems to be the burner...


You need to replace that brass piece . Its a thermocouple. Bernzomatic does not sell a replacement thermocouple, however I had success using Mr. Heater 12.5" replacement thermocouple. You can buy it from Ace hardware. Its also sold on Amazon.
http://www.amazon.com/Mr-Heater-12-5-Thermocouple-Heaters/dp/B000BP7LJ2/ref=sr_1_1?ie=UTF8&qid=1325746531&sr=8-1

To remove the nut on the old thermocouple I use a 13/32" socket. I think a 10mm would work also. Must be a deepwell socket. The new Mr. Heater nut takes a 7/16" socket. The old thermocouple runs to a black plastic piece with soldered on connectors. I removed this piece entirely. The electric igniter's ground wire runs to one of the bolts, so that must be put back after the piece has been removed. I did make the effort put the white cloth cover over the new thermocouple. I took it off the old one. I barely fits over the nut, and must be worked on like a Chinese finger trap but it will go. Good luck.

Sep 07, 2011 | RTO Bernzomatic Brushed Nickel Patio...

1 Answer

It will light but goes out after 3-5 minutes. Tank is full and there was no wind.


Chances are that it is the thermocouple. Ive seen many on their way to going bad that held the pilot valve open so it kept the pilot lit, but after a couple minutes of burning, the vent gases pull the flame away from the thermocouple just long enough for it to quit. You could replace it , or try to adjust the pilot flame orifice in the direction of the thermocouple so that it has better contact with the thermocouple.

Apr 10, 2011 | RTO Bernzomatic Brushed Nickel Patio...

1 Answer

When I try to ignite the heater, Im not even getting a clicking noise for the pilot. Any ideas/suggestions. Thanks for the help!


The clicking noise you are not hearing, sounds like your igniter has gone bad. You can light it manually with a barbecue lighter if you can reach in to the pilot. Hope that helps.

Dec 21, 2010 | RTO Bernzomatic Brushed Nickel Patio...

1 Answer

We have a problem with the starter. Once we start


Bernzomatic Heater will not light. Full tank, but not flame; however, I can hear the igniter trying to work.Could there be spider webs present? Where do I look to find them?

Jul 09, 2009 | RTO Bernzomatic Brushed Nickel Patio...

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