Question about Maytag SkyBox MBV1976A Beverage Dispenser

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Replacement starter relay for skybox MBV1976A...

FYI, I also had a starter relay on my compressor which was in pieces on my Skybox.

Anyway, I took it to my local appliance parts store and after seeing it (they noted there is no cross-reference to look up), they gave me the following part to replace it with: 4387535 (overload relay). This pack contains a new starter relay to go across the bottom 2 leads of the compressor and a new thermal switch to go on the top lead of the compressor. The guy told me this would function the same as what I currently have, but it is just a newer verison of it.

It installs easily...you plug the new starter relay in just like the old one...just make sure you get the wires on it the way the old one was setup. Before installing the new thermal switch on the top post of the compressor, you need to delete the old one which is that small round thing with a flexible metal piece inside...just follow the black wire which is plugged into the top terminal of the compressor backwards a little. The nice thing is that when you remove the old thermal switch, the wire has the spade lug you need to plug into the new thermal switch.

FYI, this replacement runs about $40-$50...maybe if you search the internet enough you might find them cheaper?

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I lost track of the way the wires go on starter relay. can someone please let me know or send diagram, for the 3 wires. Any help would be appreciated.

Posted on Feb 12, 2010

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Maytag skybox stopped cooling Skybox stopped cooling. Sounds like the relay will kick on briefly and then click off. Everything else works. I took the back panel off and could hear the relay clicking on...


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Maytag never offered a compressor as a replacement part for the SkyBox. It simply was not cost effective. If you are sure the thermostat is supplying 120VAC to the compressor, then have a qualified service technician install a Supco URCO410 relay/capacitor/overload kit on the compressor. As with any sealed refrigeration system, the US Environmental Protection Agency requires that a certified refrigeration technician recover the refrigerant charge before accessing the sealed system.
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you need to change the overload relay ---- there is a company called appliancezone.com

they sell the overload relay unit with all the parts for $26.00

email me back if you cant find it---- put in the model # for the skybox unit and you will see the item

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this is the problem -- if this relay goes bad the compressor will stay on and not supply cold air to the unit ----

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I just replaced my in-pieces starter relay and thermal swich with a Whirlpool 4387535 kit. My Skybox has been working fine ever since.

Note I had the same symptoms as other posts of the compressor turning on/off continuously (but no cooling)...I believe what was happening is that the starter relay would allow current to flow to initially start the compressor, but would never stop providing current to it after it had already started (as it should) thus in a few seconds the thermal switch would sense this and trip / remove power to the compressor...then this cycle would start all over once the thermal switch cooled down again and let power back to the compressor...

This kit is evidently the newer style of what is on the original Skybox compressors (functionally speaking)...the new starter relay looks and installs like the old one, but the thermal switch is different and you need to remove the old one (follow the black wire on the top post of the compressor back a little to a small black round thing with a flexible metal piece inside). The good news is that once you remove it, it already has the correct spade lug on the wire to plug directly into the new thermal switch which sits right on the top lug of the compressor above the starter relay.

Note I'm not a service tech, just a Skybox owner who was/is tired of Maytag disowning this product and calling it a "throwaway" when any part of it stops working (and all local authorized service centers laughing when asked to repair one).

Continuing on with my rant a little, I also see other posts on the internet which also state "throwaway" when you actually have a bad compressor because you can't get direct replacements anymore - my friend who does AC work on the side said he most certainly could put another compressor in there from probably just about any other mini-fridge...he just noted that it is a small place to do it so the replacement compressor form factor will have to be considered. He stated you may get a little more or less cooling efficieny but who cares if you really want to keep your machine working that you can't buy anymore (nor get a close alternative).

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