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

2K views 5 replies 3 participants last post by  ashton 
#1 ·
Morning All,
You helped me out last year with my AC service. :thumbsup: Saved me from getting ripped off. Thanks!
http://www.diychatroom.com/f17/hvac-just-serviced-thoughts-needed-repairs-45144/index4/

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?
 
#4 ·
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.
 
#6 ·
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....

Again...you all saved me a ton of money

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