Water Heater

[jrhaman]

Just got back from taking the 06 3400rl out for the 1st time. Everything went ok except I could not get any hot water. Both the gas and electric burners worked ok and the water in the tank got hot but only got cold from the faucets. Changed the by pass and I would not get any water. Cannot find any valves to turn on. Any ideas...thank j

[H. John Kohl]

If you change the bypass and do not get any water that may mean you were filling the hotwater tank.
remove the bypass and open the hot water faucet and see if air comes out. If so let the hot water tank fill.
If this is the case do not leave either the propane or electric heating on or it will do damage.
Good luck.

[sreigle]

I think John is on track. When you got only cold water, that probably is because the water heater is being bypassed, causing the incoming cold water to be diverted to the outgoing line.

When you reversed the bypass, hot water should come out of the heater and flow to the faucets. The only think I know of that would stop the flow is a defective checkvalve. It is screwed into the water heater and the outgoing line screws into it. We had this happen once. A dealer (any brand) will have one. It was around five bucks a couple of years ago.

If you get air hissing when you open a faucet, then the checkvalve is ok and the water heater is pushing out the air as it fills with water, as John said.

Your water heater is probably a Suburban. The dealer may need to know that to get you the right checkvalve.