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Replaced burned out contactor on XE1000. Engage power to see

Customer Question
fan start. for 2 seconds...
Replaced burned out contactor on XE1000. Engage power to see fan start. for 2 seconds and shut down. Pull power the contactor clicks/disengages.
JA: I'll do all I can to help. Tell me a bit more about what's going on so we can help you best.
Customer: When I replaced the contactor I installed a new capacitor. Kinda expected problem solved. Since fan can start I am not suspicious of cap...
JA: Is there anything else the HVAC Technician should be aware of?
Customer: Nothing I am aware of
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the HVAC Technician about your situation and then connect you two.
Submitted: 1 year ago.Category: HVAC
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Answered in 3 minutes by:
5/26/2016
HVAC Technician: Gaztech, HVAC Technician replied 1 year ago
Gaztech
Gaztech, HVAC Technician
Category: HVAC
Satisfied Customers: 513
Experience: Owner at Gaztech
Verified

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If my initial response doesn’t answer your question then let me know and we can continue our conversation.

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Customer reply replied 1 year ago
Ready
HVAC Technician: Gaztech, HVAC Technician replied 1 year ago

Sorry for delay, I am assisting 2 other cust. at same time.

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HVAC Technician: Gaztech, HVAC Technician replied 1 year ago

So your saying that when you set t-stat on cooling the unit starts but shuts itself off in seconds?

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Customer reply replied 1 year ago
New contactor burned out too what are most likely issues to cause new contactor to burn out?
Customer reply replied 1 year ago
After installing the new Cap & con yesterday the fan started for 2seconds and stopped Did that couple times as I checked power & fan spinning freely. After those checks tested the contactor again to see no volt downstream of the con. Cons are cheap but root issue of burn out needs to be identified yet.
HVAC Technician: Gaztech, HVAC Technician replied 1 year ago

Do you have a microfarad tester to prove new capacitor is burned out

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Customer reply replied 1 year ago
No to microfarad Have not tested new CAP
Tested new contactor - There is no power after contactor
HVAC Technician: Gaztech, HVAC Technician replied 1 year ago

A capacitor can burn out for no reason like a light bulb, most time it will bulge out the top where the wires connect, or in a case where the compressor or fan motor are defective it can strain out the capacitor.

Do you have a volt meter?

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Customer reply replied 1 year ago
I do
Customer reply replied 1 year ago
7 in 1 multimeter
Customer reply replied 1 year ago
Tested capacitor it is fine.
Contactor is fried. Unsure of root cause on old and new contactor burning out.
Uncertain contact points to test 24 from Thermostat
Customer reply replied 1 year ago
Checked tstat volts 1.2
HVAC Technician: Gaztech, HVAC Technician replied 1 year ago

Did you look at the link I sent you, it shows a picture of a contactor and contact points

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HVAC Technician: Gaztech, HVAC Technician replied 1 year ago

T-stat 24v between R and C, or R and Y if system is off

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Customer reply replied 1 year ago
1.2 best I get from tstat
HVAC Technician: Gaztech, HVAC Technician replied 1 year ago

is your tester on AC? NOT DC, if your not sure check it in a wall outlet for 120vac

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Customer reply replied 1 year ago
ac
HVAC Technician: Gaztech, HVAC Technician replied 1 year ago

OK does t-stat have a terminal C and has a wire to it?

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Customer reply replied 1 year ago
Getting zero reading on c & r
Customer reply replied 1 year ago
Zero on R & Y
Customer reply replied 1 year ago
Transformer?
HVAC Technician: Gaztech, HVAC Technician replied 1 year ago

I would check for a burned fuse in the indoor unit first, what model furnace is it?

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Customer reply replied 1 year ago
Xe80
Customer reply replied 1 year ago
Do not see fuse on it
HVAC Technician: Gaztech, HVAC Technician replied 1 year ago

Open bottom compartment of furnace to access control board, notice the door switch, you need to tape that in to have power to unit, check fuse on board, if good then volt check 24v a terminal R and C

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Customer reply replied 1 year ago
Normal flash. Appears correct / good
HVAC Technician: Gaztech, HVAC Technician replied 1 year ago

24v between R and C?

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HVAC Technician: Gaztech, HVAC Technician replied 1 year ago

I have to leave soon, I was still waiting for you response.

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Customer reply replied 1 year ago
No change here
HVAC Technician: Gaztech, HVAC Technician replied 1 year ago

24v between R and C?

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HVAC Technician: Gaztech, HVAC Technician replied 1 year ago

Taking you to long to respond, communication and details are the key to resolving issue.

I will check with you later, here is next step to check is if you have a float switch in a pan under you furnace thats not making contact, or a condensate pump beside your furnace with a float safety switch with two wires, you can put the 2 wires together to see if that is the problem

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Gaztech
Gaztech
Gaztech, HVAC Technician
Category: HVAC
Satisfied Customers: 513
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