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-   -   You guys helped me last year now I need your help again... (

ashton 05-10-2010 07:14 AM

You guys helped me last year now I need your help again...
Morning All,
You helped me out last year with my AC service. :thumbsup: Saved me from getting ripped off. Thanks!

Now I could use your advice again. All caps were replaced last year and last night I noticed a loud humming coming from the furnace. At first I thought it was the blower motor but that was not it. I had my wife switch on the blower and started/stopped fine. I quickly heard/felt the him from the transformer. The air conditioning wouldn't turn on when I set the temp down. I turned on the furnace everything kicked in and turned it back to AC and it then kicked on.

Sound like a bad transformer? or something else?

beenthere 05-10-2010 03:53 PM

Could be a stuck contactor in the outdoor unit.

ashton 05-10-2010 05:53 PM

2 Attachment(s)
The points look bad on the contactor. The numbers are all washed out and I want to order the correct one. Can you guys help tell me where and which one to get?

yuri 05-10-2010 06:07 PM

They are rated in amperage draw for the contacts at 240 volts. Kinda looks like yours is a 25 amp model. I would order a 30 amp 24 volt contactor from Grainger. Slightly stronger contacts are better anyway. Double pole single throw type. Be careful as you need one with a joined set of contacts/buss bar type. Best to take the picture with you and drive down there.

ashton 05-10-2010 06:20 PM

I was guessing it was a 25 single/shunt but will get what you suggest.


Thanks for all of your help!!!!

You guys are the best!

ashton 05-15-2010 03:26 PM

update...just received my contactors today and installed them.....A/c units working great!:thumbup:

I put on 30 amp. I am surprised both of my units lasted this long. I couldn't see any points on the old contactors.... all saved me a ton of money

If we dont say it enough...Thank YOU!:thumbup:

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