Originally Posted by u30363
We also have a 2016 Berkshire 34QS and are having trouble getting hot water. Sounds like you are saying you turn off the switch inside the MH and then go to the outside access panel near the passenger rear and press a black button and then turn the heater back on inside. Not getting any help from our dealer and getting frustrated as we need hot water for my elderly parents.
If you have a 2016 my guess is you have a Atwood water heater. This post is getting confused as it is about a Gen lll water heater made by Gerard. You may what to start a new post to get more help. As this is old I can try to help but I doubt other Atwood people will see it.
A couple of things to try. First obviously make sure you are getting LP to the heater. Next check the switch on the wall. It has a red light on it. Make sure that is on. Now go outside and check the black tube that sticks out the hole. This is a favorite place for bugs especially mud daubers. Pull it off the pressure switch and run a piece of wire or a pipe cleaner something like that. Now check the bottom of the pressure switch where the black tube goes. A MD will seal that end. That's easy to miss I know first hand. When you put the tube back on turn it so it points inside not through the hole. This is recommended by the manufacturer. Also seal the hole as the damn MD will go in and find his tube and start all over. Also I know that form first hand experience. If all that doesn't get it going pull both brown wires off the pressure switch. That's where the black tube goes. With the hot water running touch the wires together. If it starts up double check the black tube again. If clear and I mean completely clear you have a bad pressure switch.
Also there is a reset button in the heater compartment. It is on the left side about half way up. When you push it you will feel it click. If you don't feel that click it doesn't need resetting.
If no joy call Atwood customer service and they will help trouble shoot.
A couple of things that will help understand the Atwood.
First you need good water pressure. 50-60 is great. Below 40 and you will hate it. Also I start with full hot and slowly add cold. If you go to far with the cold it will shut off because there is not enough flow through the heater. So if it's very hot I turn the BTU's down. This is outside again and it's a orange or red valve that you can turn to increase or decrease the gas flow. I have mixed results with turning it down but you can play with it.
Once you learn how the heater works and you get used to it you will love it. I do mine. Well honestly it's a love hate thing but mostly love. Let us know how it works.