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Goodman mbvc2000aa-1ae 24v 3A fuse keeps blowing. Few dats…

Customer Question
Goodman mbvc2000aa-1ae 24v 3A...

Goodman mbvc2000aa-1ae 24v 3A fuse keeps blowing

Contractor's Assistant: I'll do all I can to help. How long have you been dealing with this?

Few dats few days

Contractor's Assistant: Do you plan on doing the work yourself?

Trying to

Contractor's Assistant: Anything else we should know to help you best?

Replaced an old thermostat w/ new one. originally thought that was the prob

Contractor's Assistant: Just to clarify, do you think this is a larger HVAC problem, or something specific to the thermostat?

Thermostat is new Lux tx9600ts. all wiring to thermostat to blower to outside unit no shorts. all Tstat wiring is good.

Submitted: 7 months ago.Category: HVAC
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Answered in 10 minutes by:
12/8/2017
HVAC Technician: Phil, Mechanical Engineer replied 7 months ago
Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 7,426
Experience: Retired HVAC/ Electrical & Boiler contractor. Industrial
Verified

Hello,

If this began after you installed the Lux, then there is most likely a wiring error, remove one wire at a time from the thermostat terminal strip in the furnace until the fuse ceases to blow. Tell me which wire when removed allowed the fuse to remain in tact.... leave the Red wire attached to the R terminal for last however.

We can go from there without a time limit

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Customer reply replied 7 months ago
no, this happened before the new tstat. old tstat was failing. display was going away, could only see partial
HVAC Technician: Phil, Mechanical Engineer replied 7 months ago

was the 3 amp fuse blowing at that time with the old thermostat? If not, then there is a wiring error most likely causing the 3amp fuse to blow.

Follow my instructions to remove one thermostat wire at a time until the fuse ceases to blow, that will tell us which circuit the short is in.

.

My goal is to give you the best experience possible! I hope I have earned a 5 star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

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Customer reply replied 7 months ago
fuse was blown w/ the old tstat
HVAC Technician: Phil, Mechanical Engineer replied 7 months ago

Thanks

remove one wire at a time from the thermostat terminal strip in the furnace until the fuse ceases to blow. Tell me which wire when removed allowed the fuse to remain in tact.... leave the Red wire attached to the R terminal for last however.

,

My goal is to give you the best experience possible! I hope I have earned a 5 star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

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Customer reply replied 7 months ago
it will take a few minutes
4
HVAC Technician: Phil, Mechanical Engineer replied 7 months ago

take your time, I am here for another 7 hours today... then back all day tomorrow

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Customer reply replied 7 months ago
removed O - blew, removed G- blew, no more fuses
Customer reply replied 7 months ago
would need to drive ~45 minutes to get to autozone for more fuses
Customer reply replied 7 months ago
any comments. I don't want to drive to autozone
Customer reply replied 7 months ago
theme music of jeopardy.....................................................
Customer reply replied 7 months ago
DUM DUM DUM DUM ..DUMMMM DA DA DA DAAAA HELP ME PLZ
Customer reply replied 7 months ago
OK wait time is getting ridiculous. how do I stop this w/o you sucking my bank account dry?
Customer reply replied 7 months ago
As Pink Floyd immortalized......Is There Anybody Out There?
Customer reply replied 7 months ago
really, I'm trying to end this and give a 1 rating, but it wont let me. how the hell do we end this??????
Customer reply replied 7 months ago
rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off rip off
HVAC Technician: Phil, Mechanical Engineer replied 7 months ago

I will submit this to customer service they will arrange a suitable solution for you I am sure.

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