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Tim can you help with a 1955 GE fridge relay

Tim can you help with a 1955 GE fridge relay
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Answered in 5 minutes by:
2/18/2012
Tim Alan
Tim Alan, Home Appliance Technician
Category: Appliance
Satisfied Customers: 1,256
Experience: Amana, A&E (Whirlpool) ,and Maytag factory service
Verified

Tim Alan :

Hi, I can try what is the issue?

Customer:

The relay part number wr7x11 and it just has 3 poles not 5 and this is throwing everyone off

Customer:

3 wires coming into it

Tim Alan :

What is hooked up to it?

Customer:

let me try to describe.. i type slow sorry

Tim Alan :

Thats ok i use the hunt and poke method too

Customer:

There are 2 wires coming down the back of the fridge one goes into the compressor and the other connects to the #4 post on the relay. Then there are 2 wires coming up from the compressor on black and one white. The black one attaches on the relay at post #3 and the other to post # XXXXX 3 and 4 are on the top of relay and #1 isat the bottom. Thats all the wires involved.

Tim Alan :

I just looked up the relay and couldn't find anything on it, not sure what wires and from were are on the relay, typically on a relay the common goes to run the hot goes to the common on the compressor and if there is a capacitor on it that wire goes to the start winding and one that goes the capacitor also attaches to the run the other wire may be a pickyback for something else.

Customer:

Any idea on replacing this part or is this something I will need to have looked at?

Tim Alan :

No it's not available and i couldn't locate any kind of replacement but somebody may have replacements listed in a book at a parts store or you can check mars relays they are a good source also

Customer:

I had a parts store sell me a supco 5 wire relay. They told me it would work. But after I bought it they couldn't tell me how to install it.lol

Customer:

I guess I will have to have someone come out to look at it

Tim Alan :

I think i helped somebody once before on one of these i had him trace were the wires came and went from and we were able to get it running again

Tim Alan :

You would need a meter also and give me an ohm reading on the terminal and then which wires were hot and which is common but we did get it wired up and running

Customer:

Yep I found that when I was googling. Thats why I came here. He had a 1950 GE with 6 wires going into his relay

Tim Alan :

Yes ok i thought this was familiar

Tim Alan :

they sold you a round 3 in 1 relay?

Tim Alan :

it has 2 wires for incoming power and then 3 that go to the compressor?

Customer:

yes

Customer:

model ro41

Tim Alan :

That figures we in the industry do not like those and are only for last resorts

Tim Alan :

we actually call them compressor fryers

Customer:

nice

Tim Alan :

they tend to burn out compressors

Tim Alan :

Give me some time and let me research this i may be able to find a replacement relay that would be easier

Customer:

sounds great

Tim Alan :

I will send a message when i find something

Tim Alan :

but i would not recommend that relay at all

Customer:

k this is my first time here. I can just close this and come back to it later?

Tim Alan :

yes press save and exit and remember your log in info or copy and save the direct link

Tim Alan :

http://www.justanswer.com/appliance/69oh1-tim-help-1955-ge-fridge-relay.html

Customer:

ok

Tim Alan :

Have a good day i will let you know one way or the other

Tim Alan :

Ok according to mars replacement guide the replacement for your old relay is mars number 21310 you can try ordering from a parts store or from mars, being such an old style relay mars would be your best bet.

Customer:

Tim could you post a link to this item? When I search mars by this part number nothing comes up.

Tim Alan :

I don't understand their website they have a cross reference guide and lists that but you can't find it on there website or catalog.

Tim Alan :

Its in their product cross reference and pdf files not in their online site, you will have to have a supplier order for you I think, they may only be wholesale but that is their part number for the replacement of your wr7x11.

Customer:

O.K. thank's Tim, I will see if I can get one ordered on Monday. I am guessing it will hook up the same or very similiar.

Tim Alan :

Most of those do come with instructions but it should be very close to what you have.

Customer:

Tim do you have anyone I could order this part thru? I have tried several contacts and I can't find this part anywhere. Could the relay in this link be of possible use?

Tim Alan :

Nobody has one or can order one from mars?

Tim Alan :

If they can't find it or get it I don't know what else to tell you on that relay.

Customer:

Not that I have found local

Customer:

http://www.amazon.com/dp/B004CSSTM2/ref=...

Customer:

could that be of use

Tim Alan :

You can try partselect, appliance parts pros, appliance zone

Tim Alan :

If it is not available then the only option would be the 3 in 1 relay I do not like those but sometimes that is the only option

Customer:

Thanks I will.. You have been more help than my local guys lol

Tim Alan :

Ok let me know we can use that 3 in 1 if that is the only option but you will have to have a meter and tell me were the wires go and come from but we can do it

Customer:

I will Tim, give me another day or so and I will let you know.

Customer:

Thanks again

Tim Alan :

Ok your welcome.

Customer:

Hi Tim no luck on the relay hunt.

Tim Alan :

Not much more you can do other then try the 3 in 1

Customer:

Yeah I know

Customer:

Here is a bit of info I think will help

Tim Alan :

ok

Customer:

can i paste here?

Customer:

1. There are two wires coming down the back of the fridge. One goes right into the compressor, and the other goes to the relay (lets call this "U" for the upper wire.


2. There are 2 wires coming up from the compressor a black we can call it (LB) lower black and lower white (LW)


connection of "u" to "lb or "lw" gets a resistance of 1.54


but the connection of "lb" to "lw" gets a reading of 20.0

Tim Alan :

You can try or click on the papaerclip to upload or paste links

Tim Alan :

resistance of 20?

Tim Alan :

that is pretty high

Tim Alan :

that's like a heater

Customer:

I think I did it right

Tim Alan :

Do you know what they go to?

Tim Alan :

To wire that it has 1 hot wire and one common wire

Tim Alan :

one of those goes through the thermostat

Customer:

I think one of the upper goes to the thermostat, both lowers come right out of the compressor to the relay

Tim Alan :

and then there are three wires from the 3 in 1 that go to the compressor

Tim Alan :

Usually the hot wire goes to the common on the compressor

Tim Alan :

the neutral goes top the run

Tim Alan :

and the start is powered by the relay

Tim Alan :

Usually the hot wire goes through the thermostat and the common can come from anywhere

Tim Alan :

the hot should be black or red

Tim Alan :

i said common but mean neutral

Tim Alan :

The neutral is usually white

Customer:

Not sure if this helps but, at first i did not have a multitool to check the wires so I used a circuit tester to see what was hot. When I touched the top wire to either lower one i got as completed 120v circuit

Customer:

one sec someone at the door

Tim Alan :

ok

Customer:

back

Tim Alan :

How many wires are on the relay that do not go to the compressor?

Customer:

one the upper

Tim Alan :

what color is that and did that have 120 volts to it?

Customer:

Its white and is the nuetral i think

Customer:

I think it goes to the thermostat

Tim Alan :

Yes that would be the neutral so that goes to one of the lines that are hotwired on the 3 in 1

Customer:

one of the black?

Tim Alan :

yes one of the black wires that does not have a connector on it

Tim Alan :

One of the wires that had 120 volts should be your hot wire

Tim Alan :

now either the neutral or the hot could go through a thermostat

Tim Alan :

so one of those should come from a thermostat or control

Customer:

so if the upper is the thermostat wire and neutral it hooks to one of the black connectors and the other hooks to the hot line?

Tim Alan :

Yes that is correct

Customer:

then which other wire is not getting used? That leaves the r,s,c wires

Tim Alan :

those go to the compressor

Tim Alan :

the r is run

Tim Alan :

the s is start

Tim Alan :

and the c is common

Tim Alan :

to determine which wire goes were take a resistance reading between all 3 terminals on the compressor

Tim Alan :

between run and start would be the highest resistance

Customer:

I can't get to the terminals without taking the compressor apart

Customer:

That would be the 2 lower wires

Tim Alan :

taking it apart?

Tim Alan :

you mean the relay and wires off?

Customer:

The wires go insidee the compressor there is no way to unplug them

Tim Alan :

how many wires go inside the compressor?

Customer:

3 one comes from the top of the fridge and goes into the comp without stopping

Tim Alan :

ok that is probably the common on the compressor

Tim Alan :

take a reading between all 3 wires and let me know what the readings are

Customer:

Do I need to splice into it to check it?

Tim Alan :

wow i have not seen one of those compressors since high school

Tim Alan :

a long time ago

Customer:

lol

Tim Alan :

Just strip the wires bare

Tim Alan :

if you have to go ahead and cut

Customer:

4 wires all together--- one goes straight into the compressor so I assumed that would be the hot wire. Because when I plug the fridge in with no relay. I had juice coming from the compressor

Tim Alan :

Ok

Customer:

do you want me to get back with you. Might take acouple of minutes

Tim Alan :

That's fine i will be on for a while

Customer:

The new 4th wire to lw=18.2 4th to lb=2.

Customer:

sorry 2.0

Customer:

4th to uw=1.52

Customer:

4th wire only had a complete 120v circuit when connected with the uw wire

Tim Alan :

4 wires going into the compressor?

Tim Alan :

you have 4 wires going into the compressor?

Customer:

no

Customer:

3

Tim Alan :

ok

Customer:

I just wanted to see the resistance with the upper wire to

Tim Alan :

Those readings dont make sense

Tim Alan :

the 2 lower resistance readings should equal the high reading

Customer:

hmmm. I can go double check, maybe I had a wrong setting or something.

Tim Alan :

yes please do and make sure all you are touching are the wires going into the compressor

Customer:

ok

Tim Alan :

let me know thank you

Customer:

ok the 2 lower wires=19.3 the 4th and the lw = 17.5 the 4th and the lb = 1.5

Tim Alan :

ok the 2 lower wires would be the start and run

Tim Alan :

lw would be start or the 17.5 reading

Tim Alan :

the lb would be the run

Tim Alan :

the other wire is the common

Customer:

the upper white? correct

Customer:

and i have to splice the two back connection int the 4th

Tim Alan :

no when you wire the wires to the relay there is color designation for each wire going into the compressor

Tim Alan :

on the relay or the instructions it tells you what wire goes to start run and common

Customer:

Those are the red white and black wires. I just meant the 2 black power wires on the relay

Customer:

on the top of the relay

Tim Alan :

those don't get splice to any wire from the compressor

Tim Alan :

2 black power wires?

Customer:

oh, I see...

Tim Alan :

what do they go to

Customer:

well the relay has 5 wires 3 color coded and then 2 black wires

Tim Alan :

the 2 black on the relay are for the hot and neutral

Customer:

Do I not use them

Tim Alan :

those power the relay

Tim Alan :

the colored wires go to the compressor and nothing else

Customer:

oh sorry Tim.

Tim Alan :

yes all 5 of the wires have to be hooked up for the relay to work

Tim Alan :

the 2 black are for power

Tim Alan :

the other three go to the compressor

Tim Alan :

understand?

Customer:

yes

Tim Alan :

Ok good let me know when you have it hooked up

Customer:

I was thinking I was supposed to wire the relay into the hot wire going to the compressor

Tim Alan :

to many wires seam to mess people up going to and coming from

Tim Alan :

it may help you understand if you look at the relay and read the instructions then i think you will understand better

Tim Alan :

there may even be a diagram on the relay also

Customer:

I will let ya know

Customer:

thanks

Tim Alan :

ok tyhank you let me know how it goes or if you have any further questions

Customer:

Tim I wired it as we discussed, but nothing happened at all. So I reversed the run and start connection and it fired right up. I diconnected it, as I am not sure this is safe or correct. But the fact that it's running and cooling is a good sign.

Tim Alan :

It was running and cooling when you had it hooked up?

Customer:

yes

Tim Alan :

Ok good if it's hooked up wrong it will wither not run at all or click off on overload if it was running and cooling that's it.

Tim Alan :

Looks like you did it

Customer:

one last thing

Tim Alan :

ok

Customer:

I did not want to tear into wiring as of yet so I made a pig tail plug and wired the relay seperatly, just to test it. There are no old power wires not going to the compressor in the immediate area. Am I going to have to dig and find some. Sorry f this is dumb.

Tim Alan :

I don't understand what you mean?

Customer:

For power to run the relay...

Tim Alan :

oh you hooked it up hot?

Customer:

I was under the impression not to use the wires going to the compressor

Tim Alan :

to run all the time

Tim Alan :

what were the wires going to the compressor again?

Tim Alan :

were there 2?

Tim Alan :

or more?

Customer:

one power to it and 2 coming off of it

Customer:

plus one going to the relay, we figured was a return or neutral

Tim Alan :

ok one of those has to be a hot wire that goes to the relay the 2 that came off the relay i need to know were they go or come from and then one may be a neutral for the other power to the relay or the relay just could have been used as a junction for power or neutral

Customer:

Thats what I was wondering it seems to be a junction

Customer:

I'll be right back im gonna try something

Tim Alan :

Ok that's probably what it was then

Tim Alan :

ok

Customer:

Tim I'm gonna close this out soon. The fridge is running on the hot setup, but not on any other. Possible thermostat??

Tim Alan :

Yes that would be a thermostat that is not operating

Tim Alan :

good job on getting the compressor running

Tim Alan :

I wish i had a wiring diagram but nothing would be available on the net for this old of a unit ge probably wouldn't even have one at this point

Tim Alan :

but the thermostat is just a switch that opens and closes it should have hot going to it and coming out of it

Customer:

Thank you very much! I will highly reccomend you!

Customer:

true

Tim Alan :

Your welcome, please remember to press the accept button and leave a comment, thank you and have a great day

Customer:

I mean thats what tells the compressor to run right

Customer:

or provides the power

Tim Alan :

Yes that is correct that is what cycles the compressor on and off

Customer:

thanks again

Tim Alan :

Your welcome

Tim Alan
Tim Alan, Home Appliance Technician
Category: Appliance
Satisfied Customers: 1,256
Experience: Amana, A&E (Whirlpool) ,and Maytag factory service
Verified
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Tim Alan
Tim Alan, Home Appliance Technician
Category: Appliance
Satisfied Customers: 1,256
1,256 Satisfied Customers
Experience: Amana, A&E (Whirlpool) ,and Maytag factory service

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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