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Re: Heat Pump Water Heater- Need Help


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Posted by VaTom on June 25, 2014 at 20:31:06 from (70.32.219.33):

In Reply to: Re: Heat Pump Water Heater- Need Help posted by George Marsh on June 25, 2014 at 18:29:52:

Hi George,

The silver capacitor is new from McMaster-Carr, yup <$10. The black one (that confused me) came with the heat pump, actually both heat pumps.

They were bought off ebay, obsolete at the time. My heat pump melted that capacitor (one spade fell off), had been working fine this year as usual. The one in the photo didn't completely melt because I turned the switch off before it was gone. It is disfigured, you can make out the bulge in the photo. Tomorrow I can get out a VOM, but the new capacitor didn't get the compressor to start. You can see it hanging out of the heat pump, wired but not fully installed.

I replaced my HPWH with the one in the photo, identical, bought at the same time. It had never been used, a friend let it sit those 13 years. It doesn't start.

"Hard start kit" I know nothing about. Please explain a little more so I can find one.

The factory tech, who had never seen one of these, could only tell me the compressor was bad (did not start even with a new capacitor wired correctly). This unit says Crispaire, but the company is now called Marvair, still in Cordele, Ga.

These were sold simply as heat pump water heaters. On installation I discovered that wonderful byproduct and utilized it. That's when I started recommending HPWHs, don't know how many I got purchased over the past decade.

I've mentioned that I consult on this type of passive heating/cooling housing, not only in the US.

When I briefly searched, I only found tank HPWHs, don't know if anybody still manufactures add-on units. The reason my friend never used this one was they don't conveniently hook into the electronic controls of the tank heaters he and I bought. Mine was to replace a leaky tank heater, I was motivated to figure out how to make it work. Too much benefit to abandon.

T_Bone helped me with that, how we became friends. Required an extra switch and some creative wiring, worked great all those years. Before that, the Crispaire tech conferred with a Whirlpool tech and they concluded it was a mismatch and could not work.

You have far more faith than I have seen justified in HVAC people. If I knew of a competent one, a repair or compressor replacement would be ideal. These now obsolete TACO pumps were the weak part but I stocked up on re-build kits. With a spare HPWH unit, I figured I was all set.

Far as I was concerned, what I had was excellent. Any time you can reduce the need for one dehumidifier, that's a good thing. Even better when you get cheap hot water in the bargain.

Appreciate the help.


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