Attwood GC10A-4E Water Heater Problem
I have an Attwood GC10A-4E (10 gallon, combination gas/electric) water heater in a 6-year old Holiday Rambler motorhome that has been completely problem-free until today. I usually leave it on ‘electric’ and only use the ‘gas’ mode when dry-camping (very seldom) or in combination with the ‘electric’ mode when needing an extra boost to heat a lot of water.
When I got up this morning, I happened to hear the burner running so I checked the switches, thinking the ‘gas’ mode must have been inadvertently turned-on. It wasn’t, and in fact the ‘gas’ switch was in the OFF position with the DSI FAULT light lit. The ‘electric’ switch was in its usual ON position (element was also ON, based on the power draw).
I played with the switches a bit, and found that I’d get the burner to light with either the ‘gas’ or ‘electric’ switch turned on, and the DSI FAULT light would come on within 5-10 seconds. The ‘electric’ element would come on only when its respective switch was on, and then I’d also get the DSI FAULT light to come on in 5-10 seconds.
Right now, it’s dark, very cold and raining so I’m not ready to go outside to troubleshoot. I wanted to throw this out in advance to see if anyone has encountered this before or has any suggestions to help minimize the time outside. Brrrr…