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Electric water heater will not stay on

I have a truma gas/electric water heater in my caravan, a problem occurs when the boiler is charged with water, when you turn on the electric water heater it brings the tank up to the temperature, (50C) once water is used (not all) the water will not heat up again untill i switch off the boiler for 5/10 minutes and it then heats up again, i have to perform this procedure all over again. no problem with the gas opperation. i have dusted the control board and cheaked the fue, fine, i,m at a loss as what to do.

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Sounds like the electrical thermostat is defective and is being over ridden by the overheat safety stat.

Posted on Nov 29, 2008

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Truma c 3402 water boiler


Sounds like a bad Relay on the control board

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Truma water heater water wont come out of the taps when on gas, 12 volt or mains 240 volt


Bleed your propane system by running the stove for a sec. if that doesn't work go out to the heater and listen for the ignitor clicks see if it's trying to lite. My fifth wheel does this first time every season.

Feb 22, 2015 | Water Water Heaters

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No hot water


10-22-12
Copy following links to help identify product and download possible troubleshoot resources:

Tank-type gas
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html

Tank-type electric:
http://waterheatertimer.org/How-to-troubleshoot-electric-problems-with-water-heater.html

Rheem tankless:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

Other types of water heaters include boiler, tankless electric, indirect, solar-assisted, solar, hybrid electric, heat pump, wood-burning, gas hybrid, 3-phase commercial electric.

Oct 21, 2012 | Rheem Water Heaters

2 Answers

My Rheem water heater is giving a ECO failure, How can I fix this?


Question posted under Rheem water heater.
Model number and gas valve are unknown. Add a comment.

Following information applies to typical tank-type gas water heater, and does not apply to tankless water heaters, boilers, indirect heaters, solar water heaters, etc or for electric water heater.

Electric water heater ECO is located on upper thermostat.
Open top cover and ECO can be reset by pushing in red reset button,
Or ECO can be replaced by replacing thermostat. Add a comment.

Open following link to see typical tank-type gas water heater ECOs:
http://waterheatertimer.org/images/Intellivent-ECO-900.jpg
http://waterheatertimer.org/images/Typical-gas-valve-500.jpg

The ECO will trip at 180-200 degrees F.
This happens when the thermostat fails, then the burner stays on, and the water will continue heating.

With most water heaters, the ECO is one-time use device and the gas control valve is replaced.
Some water heaters have resettable ECO, but the overheating problem has to be solved.
Each water heater is different.
Contact Rheem or read manual for correct procedure.

If you have intellivent gas control valve, open following links for typical service manual:
http://waterheatertimer.org/How-to-adjust-temperature-on-water-heater.html#intelli
http://waterheatertimer.org/pdf/Intellivent-service-manual.pdf

More resources:
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

Sep 30, 2011 | Water Heaters

1 Answer

Water gets to hot even when turned down all the way thus opening pressure release valve


I can get you started but might need more information.
Do you have tank-type electric or gas water heater?
Or indirect heater, or boiler, or tankless, or condensing, or under-counter?

If you have ordinary tank-type electric water heater, the thermostat is probably bad.
Replace thermostat(s)
http://waterheatertimer.org/How-to-replace-thermostat-on-electric-water-heater.html

If you have ordinary tank-type gas water heater, then thermostat can be bad, and thermostat is located on the gas control valve
http://waterheatertimer.org/images/Typical-gas-valve-300.jpg
http://waterheatertimer.org/How-to-install-gas-water-heater.html#clean

Add a comment for more help.

Upvote the help.
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on water heater or any do-it-yourself project.
Fixya is always less expensive than a service call.

May 25, 2011 | RELIANCE ELECTRIC WATER HEATER

1 Answer

Get a electric water heater or not?


I'd stay with the boiler, electricity to heat water is very expensive. I would not bother with a timed shutoff for the reasons you said. The water will stay hot for some time.

Jun 15, 2010 | Water Heaters

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