I have been experiencing problems with the hot water tank in my RV for several months now and would appreciate any advice you can give me. The RV is parked permanent and I don't have a vehicle to pull it into a service centre and the mobile RV repairman wants two arms and a leg to come out to look at it. The problem started with the heater not always igniting after flicking the ignition switch inside the trailer, which incidentally always glowed red, even after the unit ignited and stayed lit. Eventually I could get it to stay lit by trying several times in a row (turning off the switch, waiting a few minutes and then flicking the switch again). It got to the point where nothing at all would happen - wouldn't even hear a click or anything when I turned the switch on. I replaced the thermostat and a couple of other parts that came in a kit with the thermostat (sorry can't remember the name - two circular spring loaded things that the thermostat and another wire connects to). It did light and stay lit a couple of times thereafter but still wasn't consistent in operation. Within a few weeks it got to the point that the light wouldn't glow red at all when I flicked the ignition switch but the pilot would light and then promptly shut itself off again. The light glowed once thereafter but hasn't ever since. It now consistently lights when I flick the switch and then turns itself off although the light never glows red now. I've been told it could be the circuit board or the regulator. I'm wondering if it might be a wiring problem also. Thank you in advance for any help/advice you can give me in this regard - I'm desperate!