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#1497118 --- 03/29/17 01:09 PM
Re: Furnace problems..any ideas?
[Re: Formermac]
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Diamond Member
Registered: 12/19/04
Posts: 35546
Loc: USA
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The fact that the furnace is 6 years old, there's a 100% likelihood that it's a high energy furnace incorrect they still sell 80% furnaces - $500 the "rain" is more than likely condensation which the new furnaces produce. it sounds like it only happens when it rains most likely not condensation based on the limited information provided I'm also thinking that since this person posted this several month ago, the problem has since been resolved and the tech found a malfunctioning CPU. the motherboard has nothing to do with rain or condensation if the motherboard failed the furnace would NOT work and there would be NO condensation on a non-running furnace
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#1497138 --- 03/30/17 12:09 AM
Re: Furnace problems..any ideas?
[Re: Formermac]
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Diamond Member
Registered: 12/19/04
Posts: 35546
Loc: USA
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No contest, I'm a electrician who have installed and wired hundreds of furnace, wiring a furnace is far different than installing the entire unit wiring 101 black wire to black wire (hot) white wire to white wire (common) ground wire to ground wire (bare copper wire) LOL I bet the ranch that you don't even know how to diagnose a motherboard or secondary fan. inducer... you will lose your ranch...  is it a motherboard or a ? LOL BTW, 80% or 95%, neither requires a chimney and both produces condensation. 80% requires a metal vent pipe (flue) to a chimney or double wall exhaust pipe as the temperatures are too high and it will melt a pvc/plastic exhaust pipe 20% of the heat the 80% furnace produces goes out the exhaust and that is why the rating is 80% (100%-80%=20%) the exhaust temps are much higher compared to a 95% furnace the 95% can be vented with pvc/plastic line as the exhaust temperatures are low enough that it will not melt the pvc exhaust line only 5% of the heat the 95% furnace produces goes out the exhaust and that is why the rating is 95% (100%-95%=5%) a 'chimney' is required if the exhaust lacks a fan aka 'chimney effect' but of course you knew all that 
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#1497140 --- 03/30/17 12:24 AM
Re: Furnace problems..any ideas?
[Re: Formermac]
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Diamond Member
Registered: 12/19/04
Posts: 35546
Loc: USA
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The mother board had three fried diodes. MY MY, you just made an idiot of yourself by posting the problem found. The mother board had three fried diodes. When it rains I have to keep a towel on top of my furnace to catch the rain drips. poster '123' and poster 'Creeper' had two different unrelated problems one (123) had a bad motherboard and the other (Creeper) has a condition when it rains
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#1497147 --- 03/30/17 02:04 PM
Re: Furnace problems..any ideas?
[Re: bluezone]
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Diamond Member
Registered: 12/19/04
Posts: 35546
Loc: USA
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The fact that the furnace is 6 years old, there's a 100% likelihood that it's a high energy furnace BTW, 80% or 95%, neither requires a chimney and both produces condensation. thought you state that it was 100% a high 'energy' furnace and not an 80% furnace? the term is high EFFICIENCY furnace not a a high 'energy' furnace... an 80% furnace can not be vented with a plastic pipe because it will melt the pipe if you have a natural gas water heater it most likely is vented into a metal pipe because it is most likely an 80% water heater better not touch the metal vent pipe of the water heater when the unit is on or you will lose some skin 
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#1497149 --- 03/30/17 02:17 PM
Re: Furnace problems..any ideas?
[Re: Formermac]
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Diamond Member
Registered: 12/19/04
Posts: 35546
Loc: USA
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good for you ever run a furnace without electricity? if you go over to a clients home because their light fixture is not working you determine that the fixture only has one bulb and that the one bulb is blown you replace the bulb do you then go home and tell your friends that becuase you replaced one bulb in a light fixture that you have the knowledge to build that entire home? LOL Once again, we won't get into a nonsensical debate for the reason that the furnace is fix and I've forgotten more then you'll every comprehend. keep backtracking... Post your electrical license and DBA....what? you don't have either? ever heard of a LLC?
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#1497152 --- 03/30/17 02:30 PM
Re: Furnace problems..any ideas?
[Re: Formermac]
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Gold Member
Registered: 10/22/12
Posts: 18046
Loc: Above ground
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BTW, I had a house built in 2013, guess who designed it, wired it, installed the boiler, ran the tubing, hot water heater, kitchen etc. It's a pretty cheap proposition when someone else can dig the basement, build the blocks, frame, roof, sidings, windows, insulation, drywall and you take it from there, now once again, your expertise is what?
_________________________
I know how to bring out the buffoonery of A Trump supporter.State Fact
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#1497183 --- 03/31/17 12:59 PM
Re: Furnace problems..any ideas?
[Re: Formermac]
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Diamond Member
Registered: 12/19/04
Posts: 35546
Loc: USA
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my air conditioner just wont work .=( sometimes the easiest thing to check first is if the thermostat has batteries to check/replace the batteries Better yet, grab a fluke meter to see if 220 is there, furnaces run on 120 volts not 220 volt  most homeowwners do not own a meter for testing voltage  or know how to use it if there's no current, check the breaker. or just check the breaker first because most homeowners do not own a test meter They call your style of operation "A##%$ Backward." the batteries in the thermostat are more likely to run out of a charge before your situtation would present itself especially if the thermostat operates the furnace and the air conditioning functions but you knew all that...
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#1497186 --- 03/31/17 01:23 PM
Re: Furnace problems..any ideas?
[Re: bluezone]
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Gold Member
Registered: 10/22/12
Posts: 18046
Loc: Above ground
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my air conditioner just wont work .=( sometimes the easiest thing to check first is if the thermostat has batteries to check/replace the batteries Better yet, grab a fluke meter to see if 220 is there, furnaces run on 120 volts not 220 volt  most homeowwners do not own a meter for testing voltage  or know how to use it if there's no current, check the breaker. or just check the breaker first because most homeowners do not own a test meter They call your style of operation "A##%$ Backward." the batteries in the thermostat are more likely to run out of a charge before your situtation would present itself especially if the thermostat operates the furnace and the air conditioning functions but you knew all that... What happens if the batteries are proven to be good? secondly, a thermostat is wired to 24 volts DC and the batteries are solely for the benefit of maintaining your preset programs. You know what they call people like your self? Fool or emergency room patients.
_________________________
I know how to bring out the buffoonery of A Trump supporter.State Fact
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