bills
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Posts: 11
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Post by bills on Apr 24, 2020 12:18:32 GMT
Thanks for that advice. In the past (not by me) there has been some rewiring done. However, it doesn't seem to be complete. So, I fear the "worst." We'll see how the wiring crumbles, as they say. Thanks again for your advice. I'll be rereading the good rewiring articles. As you say lots of great information and help available here. I'm thankful to have found y'all.
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bills
New Member
Posts: 11
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Post by bills on May 9, 2020 22:37:35 GMT
I finished installing the new start relay (SUPCO RO81). I looked inside the old relay and let's say it looked very ugly in there. So rather than trying to recondition it I decided to go with a new relay. Plugged it in after checking the wiring and it started right up. So that's the good news. I did look at current draw and in all cases its been less than 2.8 amps. Typically after running a few minutes its at 2.25 to 2.37 or so. That all looks good. However, it runs the cycle and cuts off but, then does not restart. After moving the relay around it seems to start again. Currently I've got the relay out on top of the compressor so I can get at it. Funny enough it seems to be cycling correctly currently. A couple of times I could hear it click as though it was going to come on then nothing. Once wiggling the wires (particularly the red run wire) it cycled on. I've wiggled that wire while holding it firmly between the relay and the harness to eliminate my solder junction and I could make it quit (wiggling the wire between where I was holding it and the relay). Another time after hearing it click to come on and not coming on, I took my screw driver and tapped the relay and voila it cycled on. So, I think I may have a flaky new relay and have ordered another. I do have a couple of questions: 1) Does the orientation of the relay matter? Should it lie on its back wires up, for example? 2) How hot should it get while running? I've noticed that the tapered end of the relay (opposite where the line power is connected)gets very hot, almost too hot to touch. Thanks in advance for any thoughts you have. Overall, I think we're on the right track.
Thanks...Bill
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Post by elec573 on May 9, 2020 23:33:43 GMT
Yes it’s normal for the ro8 relay to get hot . They operate on a different principle than the original one. It does seem that you have a bad one . Have you replaced the wiring all the way to the under side of the compressor ? To make sure it’s not the cause.
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bills
New Member
Posts: 11
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Post by bills on May 10, 2020 17:27:01 GMT
Thanks for your response regarding the RO81 relay. I decided to take the top off the relay to take a look inside. I was suspecting an issue with the run circuit. I started wiggling the wire and the wire while as securely soldered to the contactor tab, the tab was not soldered well to the relay post resulting in an intermittent connection. Actually this morning when I turned it back on the refrigerator wouldn't run at all. So I soldered it. Afterwards the refrigerator came right on and has been working well since. I'm hopeful this fixes the original issue of the overload tripping. I'll give it a few days to make absolutely certain. I am optimistic because the old relay looked pretty ugly inside after 80 some odd years of service. They don't build them like this anymore.
Thanks to everyone for your advice and help.
Regards...Bill
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Post by elec573 on May 10, 2020 23:40:13 GMT
You’re right they don’t build them like they used too. Have an o7 Frigidaire that just quit working. Meanwhile my 80 plus year old ck in the next room keeps purring away. Hopefully yours we’ll too .
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bills
New Member
Posts: 11
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Post by bills on May 12, 2020 14:51:32 GMT
So far so good. It's been running several days now. With the old relay it had gotten to where it wouldn't run more than a day. I'm optimistic. Thanks again...Bill
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