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2 votes

question about neutral/ground bonding when a generator runs a furnace

Temporary power arrangements for a furnace seem to be fraught with trouble. Cord-and-plug connection seems reasonable, however, there may be some electrical code issues with that scheme. One possible ...
Greg Hill's user avatar
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1 vote

How to prevent furnace fresh air intake pipe from disconnecting

I agree with HABO that no harm has been done. I have a different take on the right solution, though. Since it's in intake duct, there's no outward pressure. And since it's a top-mounted vertical ...
isherwood's user avatar
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0 votes

How to prevent furnace fresh air intake pipe from disconnecting

A hose clamp might also be sufficient to compress the black collar onto the white pipe. Not necessarily applicable to this case, but for dryer vents, screws intruding into the air flow is a no-go ...
CrazyArm's user avatar
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3 votes
Accepted

How to prevent furnace fresh air intake pipe from disconnecting

Assuming that the pipe seats deeply enough in the collar you can secure it with three screws driven in 120° apart through the collar into the pipe. Running the furnace without the pipe connected ...
HABO's user avatar
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1 vote

Extending the exhaust pipe of my furnace

You haven't mentioned exactly which Goodman model you have but instructions are fairly consistent across models and time. I'm referring to instructions for a *MVC96 model. Your plan to extend the flue ...
Greg Hill's user avatar
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2 votes

Should I run my furnace fan constantly to distribute heat and moisture?

If the ducts are in a cold enviroment such as attic or crawl space, having the fan on all the time will circulate cold air throughout the homes interior, causing the heating system to cycle more often....
RAK's user avatar
  • 21
6 votes

What's wrong with my furnace blower wiring (only works on AUTO)?

Temporarily connect G to R, if the fan starts the problem is not on the controller board. In that case find the other end of the red cable and connect the red and black wires, if the fan starts now ...
Jasen's user avatar
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1 vote
Accepted

Troubleshooting Lennox furnace error code E228 -- failed to calibrate pressure switch

The solution to the problem was simply to replace the pressure switch. It's a dual pressure switch, with a high and low setting. Apparently these are "Costa Rica" switches that tend to fail ...
Rodrigo's user avatar
  • 143
1 vote

Extending the exhaust pipe of my furnace

Yes, that much length on the exterior is a freeze concern. You normally have a fairly short stub through the wall or roof which doesn't allow the steam to cool enough to freeze. An enlarged terminal ...
isherwood's user avatar
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2 votes

Can a 1950s floor furnace be removed from below (crawl space)?

Given that the furnace is abandoned there's no need to remove it in an intact or functional condition! Feel free to disassemble it. A quick way to partially collapse a furnace which has a side-entry ...
Greg Hill's user avatar
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2 votes

How can I keep a coupling nut aligned with its bolt?

It seems like the split lock washer should retain the nut, but if it doesn't, thread locking compound, a.k.a. Loctite™, should do. I'd probably go with the removable variety because it's more useful ...
isherwood's user avatar
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2 votes

Gas furnace limit switch

Limit switch can mean different things sometimes. Is it the limit switch that trips if the heat exchanger is getting too hot, or is it a limit switch in the burner area that serves as a roll out ...
diyatanycost's user avatar
0 votes

Bryant furnace under water. Doesn't run now

In this case, patience.... I had pulled the filter doors and threw away the filters to give air a bit more access to the back of the unit and let stuff dry. (I was never able to figure out how to ...
BowlOfRed's user avatar
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6 votes

Bryant furnace under water. Doesn't run now

Given that the trouble indication shows polarity reversal you might as well get a volt meter and find out. Yes polarity reversal is a real thing. Some furnace controls test for it because this ...
Greg Hill's user avatar
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0 votes

Can I reduce the size of my hot water heater vent or direct the vent out the exterior?

You can replace your water heater with a high efficiency model that, like your furnace, will use low temperature exhaust pipes that are typically vented through the wall (rather than going up through ...
Eli Iser's user avatar
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