Oasis igniter failure

[Notsotalltexan]

Seasons Greetings to all!

I have a 2017 Ventana. I've done my ITR Oasis annual service as well as the three year kit. After only about six months after my last service, I began to see the red light below the burner switch that says heater module fault. So last week I installed an annual kit making sure I cleaned all parts as ITR recommends but I still do not get the boiler to ignite. I do however hear it attempt to start but no ignition. So I recorded the starting sound yesterday. It tries to start two times then the red flame out and fault light come on.

Does anyone recognize what this sound might point toward so I can diagnose what the problem is? If ITR was open today, I would call them and have them tell me what they hear to troubleshoot. They've been helpful in the past when the water temp sensor was the problem with no hot water.

If anyone can help me, I am eternally grateful.

Laurent

 

[Kevin D Pem]

So I heard the spark!
After listening to you all I am under the impression we are talking diesel burner! If that is the case it may be the pump!

 

[Kevin D Pem]

Thanks Kevin. So I think I'd want to turn the salesman switch to see if the problem is with my summer loop pump? I also might check the flame sensor to see if it is melted like a fellow member suggested.

Was not talking about water pumps. Sounds like a diaphragm, or plunger pump. You know, to pump fuel!

 

[Neal]

Give this guide a look (download button to view)

ITR Oasis Service & Troubleshooting Manual

ITR Oasis Service & Troubleshooting Manual

rvforums.com

 

[Notsotalltexan]

Was not talking about water pumps. Sounds like a diaphragm, or plunger pump. You know, to pump fuel!

Kevin--

You are correct. The startup noise comes from the compressor. I removed the four cover screws and it appears the compressor piston busted through the diaphragm. Looks like the screw was hitting the diaphragm and wore a dent.

 

[Notsotalltexan]

Give this guide a look (download button to view)

ITR Oasis Service & Troubleshooting Manual

ITR Oasis Service & Troubleshooting Manual

rvforums.com

Thank you Neal.

 

[Notsotalltexan]

The fault occurred in the Oasis compressor not the vacuum pump.

 

[Kevin D Pem]

Kevin--

You are correct. The startup noise comes from the compressor. I removed the four cover screws and it appears the compressor piston busted through the diaphragm. Looks like the screw was hitting the diaphragm and wore a dent.

Thank you for letting us know what you found!

 

[Rich W.]

Where are folks getting service kits these days? Looking for availability more than price but it would be nice to keep the cost reasonable too. I’ve always used Hydronic Heating Warehouse.

 

[Neal]

I've done my ITR Oasis annual service as well as the three year kit

Have you tried putting any of the removed components back in such as the old igniter?

 

[Notsotalltexan]

I have not.

 

[Notsotalltexan]

I was able to find and purchase a replacement diaphragm for the Dynaflo compressor for my ITR Oasis boiler from Hydronic Heating Warehouse for $52 plus tax and shipping. Dynaflo High Output Compressor replacement Diaphragm PR0001014A

A Google search also came up with Integrity RV Parts with a price of $85 plus tax and shipping.

I anticipate getting the screw back into the arm will be the tricky part.

Laurent

 

[Rich W.]

OK, time to fess up on my flame out. I‘ve been procrastinating once again and thought I had a service kit in my parts bin, but when I went to install it to hopefully cure my flame out, I found it was just a bunch of old parts I saved from last time. Hmmph! So I tinkered for a while to no avail, and hit the road again.

Today I took a more serious approach, removed, disassembled, and cleaned the nozzle (welding tip cleaners are good for this) , cleaned the fuel block filter (because I don't happen to possess a new one), and put it back together and still flame out. So I took it back apart and this time also cleaned the fuel block with carb cleaner. Put it back together again and now we have heat, which is a good thing because the Exalted One doesn’t exactly enjoy life at 40°. So all is well and we are warm.

The lesson learned is that there are other measures besides swapnostics. I should have taken a pic, but pull the fuel nozzle, and look in the fuel block and see if it looks like it has some dirty oil colored deposits around the fuel inlet hole. If so blast it out with carb cleaner and maybe you’ll get lucky too!

 

[Rich W.]

Have you tried putting any of the removed components back in such as the old igniter?

If the old igniter glows red its good and you can move on - that was a helpful rule-out for me. On mine I didn’t mess with the fuel pump diagnostics since I don’t have a spare pump anyway. But I did notice a brief tiny yellow flame while observing the ignitor so I figured it was a fuel delivery problem. The trouble shooting manual, post 4, was very helpful.

 

[Notsotalltexan]

UPDATE: Hydronic Heating Whse said they no longer sell the Dynaflo High Output Compressor replacement Diaphragm PR0001014A so looks like I will have to pay $85 from Integrity RV.

 

[newmarokie]

We just got back from South Texas. The first night out our oasis laid down. I was like Rich and had no new parts. I had a flame but terrible soot. It would and go to safety shut down. We were at the grandson's motocross race and boondocking. I opened up the oasis and removed both sintered filters and back washed with brake cleaner. I cleaned the nozzle with a welding tip cleaner and reassembled. The oasis worked the rest of the trip. I have a three year maintenance in the coach now.