Search: Posts Made By: mike_
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01-11-18, 09:25 AM
Replies: 21
Views: 2,046
Posted By mike_

Update, since replacing the control wire to the...

Update, since replacing the control wire to the outside unit and getting rid of the nicks in the control wires at the thermostat, the heat pump has been working for 8 days now.

The aux heat issue...
01-03-18, 03:09 PM
Replies: 21
Views: 2,046
Posted By mike_

OK, not getting 24v into the sequencers with the...

OK, not getting 24v into the sequencers with the thermostat aux light on. Going over wiring now
01-03-18, 12:59 PM
Replies: 21
Views: 2,046
Posted By mike_

OK, got all the 24v wires connected, heat pump...

OK, got all the 24v wires connected, heat pump ran last night and all morning, seems good.

But......no aux heat. Thermostat calls for it(aux light on thermostat illuminates), but as far as i can...
01-02-18, 11:11 AM
Replies: 21
Views: 2,046
Posted By mike_

Thanks jreed. I checked the contact coil, it...

Thanks jreed.

I checked the contact coil, it reads 10 ohms.

At this point, I have the all the wiring between the thermostat and air handler connected. I found a bunch of small nicks in the...
12-31-17, 12:24 PM
Replies: 21
Views: 2,046
Posted By mike_

OK, got the fuse wired inline, it's on the 24v...

OK, got the fuse wired inline, it's on the 24v red wire coming out of the transformer.

The red wire from the transformer connects to the R terminal in the thermostat.
The other wire on the 24v...
12-30-17, 04:16 PM
Replies: 21
Views: 2,046
Posted By mike_

Yes, 240v system with a 208\240 transformer. ...

Yes, 240v system with a 208\240 transformer. Using the 240 wire, 208 wire is capped like I originally found it.

As far as the inline fuse does this look good ?

Holder:...
12-30-17, 03:34 PM
Replies: 21
Views: 2,046
Posted By mike_

thanks Houston I'll check that out.

thanks Houston I'll check that out.
12-30-17, 12:02 PM
Replies: 21
Views: 2,046
Posted By mike_

Pulled the new failed transformer, it's the same...

Pulled the new failed transformer, it's the same as the original transformer that failed. Primary side burned, open resistance, secondary side visually looks good and has resistance.

I'm wiring in...
12-29-17, 01:41 PM
Replies: 21
Views: 2,046
Posted By mike_

I checked the blower motor before I saw PJmax's...

I checked the blower motor before I saw PJmax's last comment, no short to ground, resistance readings looked good, spins freely, so the motor seems fine.

I was able to detect a short to ground in...
12-28-17, 12:54 PM
Replies: 21
Views: 2,046
Posted By mike_

Thank you PJ. I'll add a fuse before I use...

Thank you PJ.

I'll add a fuse before I use the next new transformer(on order)

Looks like I can get to the blower motor enough to test for a short to ground in blower motor winding, so I'm going...
12-28-17, 11:35 AM
Replies: 21
Views: 2,046
Posted By mike_

2 Failed transformers

Hi,

I've got a very old(20 years) Trane heat pump, located in the southeast US. Ideally, I would replace the whole thing, but I just don't have the money. I'd like to get it running again if I...
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