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Old 05-25-2009, 12:50 PM   #1
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Suburban Hot water heater

I have a new Surveyor 291 and the hot water heater doesn't heat very well. On propane it gets only to 110 degrees, on electricity only 100 degrees. When I use some of the hot water, I don't hear the gas come on to reheat the water in the tank. I have to wait awhile and turn it off and back on to get it to cycle. Any ideas?

Thanks
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Old 05-25-2009, 01:23 PM   #2
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I think the lawyers made them lower the water temps.
It sucks.
You can buy a hotter thermostat but it's only 10 deg hotter and
it costs around $30.
If you're handy with tools you can use an adjustable
thermostat from a home water heater that cost $8 from Home Depot.
http://tinyurl.com/p34wu6

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Old 05-25-2009, 09:07 PM   #3
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This is interesting to read because we have the opposite problem, our hot water is extremely hot. Does this indicate a problem and should I be concerened about the water lines and stuff like that. I have already burned myself couple of times.
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Old 05-26-2009, 07:29 AM   #4
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You and Skogler should trade thermostats.

All I can say is if I was unhappy with my water temp I'd replace the thermostat
with one for a home water heater at a cost of a few bucks and less than an hour
labor and then adjust it to what I wanted.
I admit that I have not done this but I did just recently change my thermostat because
it was burned out by a shorted heater rod or lightning strike.
The Suburban T-stat is smaller than the home version replacement but I think it
would work. It just has to be in physical contact with the water tank
and then connect 2 wires.

Of course if you want both the LP gas and the electric heat to be adjustable, you'd
need to replace both because the LP and electric heat are separate
systems with separate power sources.
Yes it's a hassle but doable IMO.
YMMV.
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Old 05-26-2009, 08:21 AM   #5
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On or Surveyor, and on our previous Trailmanor, the hot water temperature was really hot. I think that is so that you can stretch a 6 gallon tank by mixing with plenty of cold water. The missus and I can take back to back showers without loosing hot water, especially if we have both the electric element and propane running at the same time to help speed up the reheating.
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Old 05-26-2009, 09:18 AM   #6
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Well, I guess this must be normal. We never have to use the gas when we are hooked up to power. I was mostly worried about this not being normal (water too hot).
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Old 06-02-2009, 05:53 PM   #7
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two things for the OP.

1.) Is your trailer new? If not, you might want to see if there is a lot of mineral buildup inside the waterheater. this can cause big issues.

2.) if 1 is not the case, you should get it looked at. failure to cycle indicates you have a problem... i.e. it ain't normal.
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Old 06-02-2009, 11:20 PM   #8
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Quote:
Originally Posted by skogler View Post
I have a new Surveyor 291 and the hot water heater doesn't heat very well. On propane it gets only to 110 degrees, on electricity only 100 degrees. When I use some of the hot water, I don't hear the gas come on to reheat the water in the tank. I have to wait awhile and turn it off and back on to get it to cycle. Any ideas?

Thanks
On newer RV water heaters there is two temperature switches located side by side that sense the water temperature from contact with the exterior skin of the tank. They are permenantly set and cannot be changed. The main switch is set for 140 degrees, the 2nd is set for around 180 degrees and is a fail safe. If both should fail then the presure relief valve lets go at 220 degrees. See the picture below for the switches


110 degrees is not enough. You can check the switches with a pot of water on the stove a volt/ohm meter and a thermometer. Attach the volt meter to the contacts on the switch and set it to the continuity setting. Place the switch in the pot of water and note the temperature at which the switch opens. If it is faulty they should replace it under warranty.

You can buy switches set at different temperatures and they are a more or less generic switch which can be found from many sources other than just RV parts dealers.
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Old 06-03-2009, 03:16 PM   #9
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We just bought our trailer and I have not had the water heater on since the walk-thru last Saturday but when I turn on the hot water tap it is still very very hot. Could the tank possibly keep it hot for that many days. I doubt it. I am wondering if somehow the water heater is continuing to heat even though we have it switched off.
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Old 06-03-2009, 03:34 PM   #10
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elainel,

If the TT is off and the gas is turned off and you are not plugged into power and the water is hot then you have a problem.
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