Question about Reddy R155D Utility Heater

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Heater will not stay running

I have one of your bigger units with wheels on it. I bought if about five years ago and recently it has a problem running. It will usually start off alright and run for about 15 minutes and then it will stop. After that I have to unplug in and then it will run for a few minutes again before it quits. Can you tell me what is wrong with this unit.

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  • 3 more comments 
  • shamrockpw Jan 30, 2009

    What did you have to do?

  • jklmking Feb 01, 2009

    will run for while then if you shut off it will start up but then kick off

  • 12nvrich Feb 03, 2009

    same problem

  • Anonymous Feb 04, 2009

    Heater will run fora a few seconds after plugging it in and then it shuts off

  • jcoulombe Feb 15, 2009

    I have a 115 btu reddy heater that will not stay running. I have changed all the filters and the photo cell and it still will not stay running. Any advice?



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  • 12 Answers I just fix this same problem 15 min. ago after 2 days of headbanging
915 EST. lets talk

Posted on Jan 30, 2009

  • william lafferty Jan 30, 2009

    get me at bigwrench 1843 @ aol .com and i can answer.



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Water gets cold to fast have a very old rheem electric water heater and have no idea to change so water stays hotter longer

Hellol Vcja,

I understand that your hot water runs out to fast when you use it. You state that this is a very old unit. The cause of this is calcium build up, their is not enough space in the water tank for water. You are suppose to flush your tank at least once a year to reduce calcium build up. Over many years this gets bigger and bigger and eventually the tank does not heat water at all. I would suggest looking in to purchasing a new tank, as the scale in it is like a big stone and will not break up and flush out of the system.

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Cathy, since this is a recurring problem, it's best that you contact Delonghi Customer Care. In the USA call 800-322-3848. In Canada 888-335-6644. In Mexico 800-711-8805.

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Need more information.... Is this a whole house unit, a window unit or what? Model #?

The breaker would be in your basement or wherever your breaker box is. If it's a 220 unit, one side could be kicked if whoever hooked it up used 2 seperate breakers (very unusual but it's been done).

Good luck!


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