Question about Coleman Hot Water On Demand

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Colemans hot water on battery ,plenty of gas .works on cold,but not on hot

Would not work at first but freed up the impeller and works on cold but does not ignite?

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If it is out of warranty there is a fuse inside them that is covered with a light rubber coating, it is the common glass style fuse. That may be causing your issue assuming the battery is ok. The batteries die regularly too especially if it hasnt been charged and is sitting around.

Posted on Apr 04, 2015

  • jim waddington
    jim waddington Apr 04, 2015

    thanks i will try that


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From what I have seen the Flow meter stops spinning, take it apart and blow air through it till it spins freely I used my compressor on mine.

Posted on Mar 24, 2016


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Posted on Jan 02, 2017

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Related Questions:

1 Answer

Where is the fuse

The fuse is located in the electronic panel Inside the unit.
If you change the fuse,disasemble the unit.
Check the water pump before replace fuse(use a needle for check
if the water pump impeller rotate freely)

May 04, 2014 | Coleman Hot Water On Demand

1 Answer

Have had my coleman for 4 years it was working well but now it ignites and then shuts off straight away, there is good gas and water pressure. Can anyone help

I had the same exact thing happen after seven years. Probably the water flow sensor or flame detection thermocouple. Either will cause the gas valve to close with failure. Wrote to coleman to find parts. They are not available. But they offered me 25% discount on a new one. I took them up on it. Love the unit.

May 13, 2012 | Coleman Hot Water On Demand

1 Answer

Water pump and ignitor do not work

took coleman away for weekend wouldn't work. Very dissapointed, was cold would have loved a hot shower. Had charged battery, when I went to start it. It wouldn't go, light come up as battery low tried it on car charger still no luck. Got home and looked up this site told me to try taking filter off pump and putting a long nail inside to turn pump to make sure it wasn't seized. And guess what every thing works well thank god, water temp was dodgy as well but now all good. Thanks to people that do reply to these sites, it has saved me a lot of money and frustration.

May 23, 2011 | Coleman Hot Water On Demand

1 Answer

Have three coleman hws same problem on last weekend. Fully charged batteries 6.45volts. New gas bottles. Turn unit on water starts to run gas ignites for one to two seconds and then goes out water will...

It will probably be one of two issues. Either the waterflow sensor is not working correctly or the propane valve connected to to control knob is stuck shut. The water flow sensor is located on the side of the copper element (grey box) check that it spins easily. The propane valve is attached to the control knob by a long metal wire and should turn freely as you turn the control knob to warm

Jun 21, 2010 | Coleman Hot Water On Demand

1 Answer

My unit doesnt pump and the fire will only light for a couple seconds

Does the low battery light come on straight away even though it is fully charged? My unit did this and I found the impeller for the pump stuck. Try taking off the filter off the end of the pump get a nail or long screw and spin / free the impeller and try and use the coleman again. If this works I suggest cleaning the unit as per the book with clr etc

Sep 08, 2009 | Coleman Hot Water On Demand

2 Answers

We done' use our coleman hot water on demand

I had a similar problem and was able to unscrew the screen at the end of the intake hose and manually move the pump propellor with a long nail which loosened it and it works fine now. I think it had seized with calcium deposit even though I had cleaned it as instructed.

Mar 19, 2009 | Coleman Hot Water On Demand

2 Answers

Burner lights and then goes out almost immediately
Trouble shooting guide

Mar 14, 2009 | Coleman Hot Water On Demand

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