Re: Marvel 6bar-bd gets too cold - explodes soda can
I also have the same problem. Our Marvel 6BAR runs continuously until
the beverages freeze. A technician came out and replaced the thermistor
under warranty. It was a simple repair that anyone could do. This
solved the problem for about another 18 months, but it has returned. I
will now search for this part and do the repair myself. It only takes a
few minutes to do.
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you have a restriction in the cooling side sounds like the filter line dryer is clogged up and will need to be replaced. Also the system will have to be recharged by a professional check to see if its in warranty.
It sounds as if the thermsitor (temperature dependent resistor used to detect temperature) has failed. You can order a replacement direct from the factory 800-223-3900. PN 42244531 - It used to come with instructions. If you need further assistance, drop me a line. - Subdriver
PS There is one other cause that can lead to similar symptoms: if the unit has a freon leak is is low on charge, it will develope heavy frost on the left wing of the evaporator plate and none on the right and will run almost continously when turned on. This is due to the control senses the plate temperature and not the air temperature. If the frost pattern covers all (or most) of the evaporator plate when running, then my original diagnosis stands.
More than likely your socket has a bad connection (probably the ground). There are two switches that can send the socket power...the door activaed switch and the manual override (ON/OFF button in the toe-kick). If you turn on the manual switch and the light is steady, then the door switch is bad. Otherwise I would trace out the connections on all the switches and on the back of the socket.
Either the unit is low on freon (as seen by heavy frost on the left of the evaporator and none on the right) or the thermsitor is toast and lying to the controller (most common cause). Call the factory at 800-223-3900 and order a replacement...PN 42244531 It comes with replacement instructions.
When you said it stopped working, do you mean it is not working at all? or is it not cold enough? If not working at all, that will be thermostat, when you change the thermostat, did you adjust the small switches to match you unit and make sure wires are connected properly, If not, it would work properly. If not cold enough, check and make sure the condenser fan motor and compressor are running, if both are running but not cooling then you have sealed system problem.
I experienced same problem with my refrigerator, Marvel ar61. Call Marvel and they will send you a repair kit which includes a new thermostat, switching relay and a new thermistor. My refrigerator is working great.