Original message
| bluflame
 |  "contactor inoperable looking for wiring schem"
, posted Sat 12 Jun 13:25  
steveco 94-388 contactor, 24v to contactor, will not close. would like to obtain diagram on this unit. thermostat call for
and delivers 24v to condensor, new contactor(single pole)does
not close. any suggestions?
chazz
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Replies:
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| xenos
Webmaster 
| "Re(1):contactor inoperable looking for wiring" , posted Sat 12 Jun 15:03
What unit ? and is there 24 vac ot the contactor?
Xenos.
The best way to escape a problem is to solve it.
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| | bluflame
| "Re(2):contactor inoperable looking for wiring" , posted Sat 12 Jun 15:13
24v at condensor relay and to the top of the contactor, i think
the common is missing to complete this circuit, that is why i am looking for a schematic
chazz
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| | xenos
Webmaster
| "Re(3):contactor inoperable looking for wiring" , posted Sat 12 Jun 15:26
How are you getting 24 vac then. are you using ground or something?
Xenos.
The best way to escape a problem is to solve it.
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| | bluflame
| "Re(4):contactor inoperable looking for wiring" , posted Sat 12 Jun 15:41:
24vac to yellow and common, comming from thermostat; and thru to the relay and a 24vac wire to top of the contactor but no common. this is the reson the thermostat calls for the contactor
to close but not start the compressor. it appears the contactor is missing a wire to activate the magnetic switch on the contactor.
chazz
[this message was edited by bluflame on Sat 12 Jun 15:45] |
| | xenos
Webmaster
| "Re(5):contactor inoperable looking for wiring" , posted Sat 12 Jun 15:46
So what diagram are you looking for?
Xenos.
The best way to escape a problem is to solve it.
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| | bluflame
| "Re(6):contactor inoperable looking for wiring" , posted Sat 12 Jun 15:48
typical wiring scheme to and from a single pole contactor, for an hvac condensor. can I call you by phone?
chazz
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| | xenos
Webmaster
| "Re(7):contactor inoperable looking for wiring" , posted Sat 12 Jun 15:51
There are just 2 wires in a condensing unit, Power comes directly from Y on the thermostat and common comes directly from the furnace.
Xenos.
The best way to escape a problem is to solve it.
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| | bluflame
| "Re(8):contactor inoperable looking for wiring" , posted Sat 12 Jun 15:55
that is correct.... the contactor is not closing due to a missing
wire, the common? and shouldn't the common wire go to the opposit
pole on the contactor terminal to the magnetic coil winding to complete this circuit?
chazz
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| | bluflame
| "Re(9):contactor inoperable looking for wiring" , posted Sat 12 Jun 16:22
XENOS, do you suggest a solution?
chazz
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| | xenos
Webmaster
| "Re(10):contactor inoperable looking for wirin" , posted Sat 12 Jun 16:58
install a common? Where is it ? it has to be there.
Xenos.
The best way to escape a problem is to solve it.
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| | bluflame
| "Re(2):Re(10):contactor inoperable looking for" , posted Sat 12 Jun 17:19
is a "common" the second wire comming from the furnace? if
so can that be placed to the magnetic field terminal on
the opposit side of the contactor. no, there is a loose black
wire that has always been taped back. my ac man says he cannot repair this unit and suggests replacement of the entire system
due to it's age. i have to stuggle thru this summer before that option can be considered. i am now holding the contactor closed to keep the house cool and manually cycling this unit until a resolve can be realized. please email me a "typical" contactor
wiring schemeatic to clgiaimo@yahoo.com I appreciate very much your time today.
chazz
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| | xenos
Webmaster
| "Re(3):Re(10):contactor inoperable looking for" , posted Sat 12 Jun 18:28
As mentioned earlier, there should be 2 control wires one Y and the other C. Power and common. C comes from the furnace Y from the thermostat.
Xenos.
The best way to escape a problem is to solve it.
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| | bluflame
| "Re(4):Re(10):contactor inoperable looking for" , posted Sun 13 Jun 09:15
thank you. am i to connect the "c" to the opposite side of the "y" on the contactor magnetic field to complete this circuit?
chazz
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| | xenos
Webmaster
| "Re(5):Re(10):contactor inoperable looking for" , posted Sun 13 Jun 11:40
Technically yes, but connect it where the wires enter the unit as there may be safeties controls in the unit that are inline wit that wire and bringing the line right to the contactor will by pass them.
Xenos.
The best way to escape a problem is to solve it.
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| | bluflame
| "Re(6):Re(10):contactor inoperable looking for" , posted Sun 13 Jun 12:16
thank you very much. i will try this today and report back to you.
chazz
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| | bluflame
| "Re(7):Re(10):contactor inoperable looking for" , posted Sun 13 Jun 19:18:
SO FAR IT SEEMS TO WORK, IT HAS CYCLED SEVERAL TIMES. T.Y.
chazz
[this message was edited by bluflame on Sun 13 Jun 19:18] |
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