Dometic Water Heater Trouble

[John From Detroit]

Thanks for the reply.
After install of new parts, I watched it light initially and let it run for about ten minutes. Then I shut it off and moved on to other projects. While camping, the first day, the WH worked as it should and cycled several times as needed to heat the water. On day two, it lit off initially with no issues, got to temp then cycled off. When it was time to cycle back on, it went into trouble mode. I confirmed the fuses were good and power was where it needed to be. I turned the WH switch on and it lit off with no problems.
I will double check the igniter gap. I looked at it initially but didn’t actually measure it.
Thanks again.

Well rather than check it you need to listen to it start to light Muoltiple lights then off Spark gap is likely good other problem exists.. NO light at all., Spark gap may and I stress MAY be the issue.

 

[Fyrflie]

Duplicate post

 

[Fyrflie]

If your door does not have the extra louvers in the lower part of it, you want to either replace the door with one that does, or install vents of some sort in the door. I've seen pics of round screen wire vents snapped into holes in the door, and other similar venting setups.

This is the later style door, it also has slots for two latches, close to the corners, and the louvers in the lower center of it.

Below is the door for the conversion kit, which is wider than a standard door and has the two latch slots, you remove one latch from its place in the middle and mount it on one corner, and they give you a second latch for the other corner. It is wider to cover the filler plates that are part of the kit.

Here is the original style door that is lacking venting and has only one latch and the doors are know to peel off the RV when driving.

Here is the door hardware kit 92101

Old -Biscuit had this to say about the Dometic WH venting (On iRV2)
The Dometic WH-6GEA air intake is flawed........

Combustion air has to be pulled thru 3 open slots then DOWN thru the door latch bracket then pulled over to burner tube venturi opening and then mixed with propane flow to achieve proper air/fuel ratio
Propane has a narrow flammability range --- 2% to 9.5%
Disrupt either and no flame

Something similar to this is what I saw mentioned in various forum discussions after the Dometic WH problems appeared.

Charles

I did install the newer style door with the conversion kit.
One of the first modifications I made to address the air issue was to increase the amount of louvers from three to eight.
I originally bought two of the round vents you have posted above but found that there was clearance issues on the backside of the door. So I opted for a 4x6 flat louvered cover. I cut out the door as needed to maximize airflow through the new cover.