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Home » Public Forums » GMCnet » Kuuma Hot water heater (No hot water)
Kuuma Hot water heater [message #192194] Tue, 04 December 2012 10:11 Go to next message
tphipps is currently offline  tphipps   United States
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Registered: August 2004
Location: Spanish Fort, AL
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Senior Member
My hot water heater died after working for 2 days in Iowa, at International.
1. Testing the element with a meter, it reads closed circuit. This leads me to believe that the element did not burn out.
2. Testing the thermostat with a meter, (air temperature conditions) it reads a closed circuit, not open. At air temperature, this is what I expect.
3. Testing the high temperature regulator, it reads complete circuit, again at room temperature.
Since both the thermostat and the temperature regulator are each about $30, I would like some opinion without just throwing money at the problem.
Related, when the high temperature regulator fails, does it die? Or, restore to it normal status?
Plenty of 110 to the heater, not a failure of the breaker.
Tom, MS II


2012 Phoenix Cruiser model 2552 KA4CSG
Re: Kuuma Hot water heater [message #192196 is a reply to message #192194] Tue, 04 December 2012 10:21 Go to previous messageGo to next message
rcjordan   United States
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Registered: October 2012
Location: Elizabeth City, North Car...
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Senior Member
I play the odds. High limit controls rarely fail. Thermostats fail, but no where near as often as elements. Since elements are the cheapest, I start there without even pulling out the multi-meter. So far, an element has solved the problem every time that I can recall.
Re: Kuuma Hot water heater [message #192198 is a reply to message #192194] Tue, 04 December 2012 10:36 Go to previous messageGo to next message
pyolet is currently offline  pyolet   United States
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Registered: August 2006
Location: Helena, MT
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Check the thermal fuse(s). Mine has 2 and one was tripped when I had your symptoms. Some are push button reset type and if you're lucky that's what you've got. Woody.
Re: Kuuma Hot water heater [message #192199 is a reply to message #192198] Tue, 04 December 2012 10:40 Go to previous messageGo to next message
tphipps is currently offline  tphipps   United States
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
Senior Member
Unfortunately, Kuuma uses a solid state high temperature sensor, sealed unit. Repair by replacing.
Ugly.
Tom, MS II


2012 Phoenix Cruiser model 2552 KA4CSG
Re: [GMCnet] Kuuma Hot water heater [message #192203 is a reply to message #192196] Tue, 04 December 2012 11:24 Go to previous messageGo to next message
Ray Erspamer is currently offline  Ray Erspamer   United States
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Registered: May 2007
Location: Milwaukee Wisconsin
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Senior Member
I would agree on this.

Our hot tub heating element recently failed. It metered fine. Everything in
the manual said the problem was the element so I replaced it, problem solved.

Ray


Ray & Lisa
78 Royale "Great Lakes Eagle"
Center Kitchen TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/




________________________________
From: RC Jordan <rc@rcjordan.com>
To: gmclist@temp.gmcnet.org
Sent: Tue, December 4, 2012 10:21:55 AM
Subject: Re: [GMCnet] Kuuma Hot water heater



I play the odds. High limit controls rarely fail. Thermostats fail, but no
where near as often as elements. Since elements are the cheapest, I start there
without even pulling out the multi-meter. So far, an element has solved the
problem every time that I can recall.
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Ray Erspamer 78 GMC Royale Center Kitchen 403, 3.70 Final Drive Holley Sniper Quadrajet EFI System, Holley Hyperspark Ignition System 414-484-9431
Re: Kuuma Hot water heater [message #192206 is a reply to message #192194] Tue, 04 December 2012 12:32 Go to previous messageGo to next message
roy1 is currently offline  roy1   United States
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Registered: July 2004
Location: Minden nevada
Karma: 6
Senior Member
If you think it is a defective heating element and not a limit stat. With the power turned on measure the voltage across the element. If you read 120 volts and the water isn't heating up the element is bad. If you don't read 120 volts you have other problems like a bad connection ,bad breaker,open limit,thermostat etc.

Roy Keen Minden,NV 76 X Glenbrook
Re: Kuuma Hot water heater [message #192210 is a reply to message #192206] Tue, 04 December 2012 13:59 Go to previous messageGo to next message
WD0AFQ is currently offline  WD0AFQ   United States
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Registered: November 2004
Location: Dexter, Mo.
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Fix it on e and be done with it Tom. Get a new one or do the on demand thing. I hate working on old junk over and over.
Dan


3 In Stainless Exhaust Headers One Ton All Discs/Reaction Arm 355 FD/Quad Bag/Alum Radiator Manny Tran/New eng. Holley EFI/10 Tire Air Monitoring System Solarized Coach/Upgraded Windows Satelite TV/On Demand Hot Water/3Way Refer
Re: [GMCnet] Kuuma Hot water heater [message #192212 is a reply to message #192210] Tue, 04 December 2012 14:08 Go to previous messageGo to next message
Ray Erspamer is currently offline  Ray Erspamer   United States
Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin
Karma: -3
Senior Member
My thoughts exactly Dan. I'm not into "keeping it original", I'm into using the
latest technology, fixing or upgrading things once and hopefully never having to
look at it again!

Ray


Ray & Lisa
78 Royale "Great Lakes Eagle"
Center Kitchen TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/




________________________________
From: Dan Gregg <gregg_dan@hotmail.com>
To: gmclist@temp.gmcnet.org
Sent: Tue, December 4, 2012 1:59:23 PM
Subject: Re: [GMCnet] Kuuma Hot water heater



Fix it on e and be done with it Tom. Get a new one or do the on demand thing. I
hate working on old junk over and over.

Dan
--
Dan & Teri Gregg


http://danandteri.blogspot.com/




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Ray Erspamer 78 GMC Royale Center Kitchen 403, 3.70 Final Drive Holley Sniper Quadrajet EFI System, Holley Hyperspark Ignition System 414-484-9431
Re: [GMCnet] Kuuma Hot water heater [message #192221 is a reply to message #192194] Tue, 04 December 2012 15:40 Go to previous message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
Tom,

I did a Google search and found this:

http://www.kuumaproducts.com/6gal.html

This heater looks just like the Atwood EH-6 I removed from Double Trouble and replaced with a Seaward unit.

When you note "Plenty of 110 to the heater, not a failure of the breaker" have you checked for 110 at the heater element? If there's
110 there then despite reading a closed circuit on the element it shot.

If there's no power there you could jumper the thermostat and see if you get power to the element. If not then jumper the high
temperature regulator and see if you get power again.

I wish I was in the USA, I think I have a spare thermostat and high temperature regulator I took out of the Atwood EH-6 when I
replaced it at the COOP. The tank had corroded through and leaked. Come to think of it I think I have an element too!

If you're not in a hurry I will be back to the USA in February and could send you the parts then.

The high temperature regulator on my Atwood has a little red button to reset it. I drilled a hole through the cover that goes over
the electrics so I could reset it without having to take the cover off. See the picture below:

http://www.gmcmhphotos.com/photos/xantrex-inverter-install/p31262-xantrex-sw-2000-instal.html

If you look in the upper left hand corner of this picture you'll see the wiring schematic for the unit. If you'd like I can send you
the owners manual for an EH-6 Atwood Water Heater.

Regards,
Rob M.

-----Original Message-----
From: Thomas Phipps

My hot water heater died after working for 2 days in Iowa, at International.
1. Testing the element with a meter, it reads closed circuit. This leads me to believe that the element did not burn out.
2. Testing the thermostat with a meter, (air temperature conditions) it reads a closed circuit, not open. At air temperature, this
is what I expect.
3. Testing the high temperature regulator, it reads complete circuit, again at room temperature.
Since both the thermostat and the temperature regulator are each about $30, I would like some opinion without just throwing money at
the problem.
Related, when the high temperature regulator fails, does it die? Or, restore to it normal status?
Plenty of 110 to the heater, not a failure of the breaker.
Tom, MS II

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
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