Originally Posted by Cloud 9
I have a 2021 Thor Omni SV34 with the Girard GSWH-2 Tankless Water Heater.
After de-winterization the water heater will not ignite. There is power to the unit but no icons on the control panel when water is flowing and no activity on the unit itself.
I have checked:
- water pressure
- every valve I can find
I have talked to the Girard tech who says it's probably a plumbing issue.
I feel like its something right in front of me, but cannot find it.
Any help would be greatly appreciated!
Back to your original question. WHERE did you check the propane? Unless you pulled off the propane fitting right at the Girard box itself (what you call the unit), and measure it there - then don't assume the coach propane is working at the Girard unit. Also pull the white plastic cover off of the control board in the unit and check the led(s), refer to manual..... If the control board is working and you think water is flowing thru the Girard then the blower should come on at least.
... In my case the furnace and stove both worked and their flames did not change when I requested hot water from the Girard. The reason will be explained in gory detail below.. Another thing I was going to have a tech try is to connect a separate source (like from a 20# bottle with a regulator), and see if it worked ok.
Here's my situation, mystery solved but not repaired yet (under Thor warranty)...
I have a 2022 Thor Tiburon 24RW with the exact same Girard GSWH-2. I bought it winterized slightly used and the first time I de-winterized it a month ago it too had issues. Girard techs are priceless mainly because they are always answering and helping. They may jump to the wrong answer but they understand their product. This is my understanding, but they have awesome User and Service manuals online which helped me a LOT! American made detailed documentation!
What you're calling the control panel (in the bathroom) and icons on the LCD display I will elaborate on to be clear. Across the bottom there are the 3 icons across the bottom that only appear when each item is successful:
1) Blower fan on 2) Gas flame on 3) Water flow adequate (on)
Usually the order they turn on is: 1 and 3, then 2. When it senses water flow, it then tries to turn on the blower and makes sure it is on. Then the flame ignites to warms the water.
I assume you are saying that inside the unit itself the little toggle on/off switch (1/0) is turned on, but the control panel LCD screen only shows the desired temperature - if it is just blank then that seems like a different problem.
In my case, the initial problem was that my blow motor shaft had frozen and would not turn and I would not get Icon 1 and then it showed E05. None of the 3 icons were on. However this only occurred because I turned on a shower faucet so the Girard until control board did indeed sense water flow. I think the blower motor shaft was just a little stuck, perhaps from below zero weather this winter (I was in PHX when I first tried it out). I just wiggled the motor shaft and it started spinning.
Next problem - request 106 degrees and it would warm up from 70 to 85 or so on the display. In my case I only had icons 1) Blower and 3) Water flow. The 2) Gas flame icon would only come on sporadically and then sometimes give E01 or E02 error, all indicating poor gas flow / i.e. low gas pressure and shut down.
My problem was that the Girard is in the slider and both the propane and water lines (water in and out) were all kinked when the slider is out but not when the slider is in. This restricted the propane flow enough that the flame was barely on at all and might shut off. The furnace and stove worked fine with the Girard on or off, didn't matter because the Girard had a separate tee line running out to it. Also outdoor quick connect propane worked. All of This was showing that the RV propane pressure was fine, just not at the Girard.
The routing of the lines is a ridiculous design (or build quality?) the lines fold like a pyramid smashing until it is a telephone pole.
Currently being evaluated by CW sending photos to Thor.
For manuals, google: Girard GSWH-2 manual