I know we have some really smart HVAC people here. I am not HVAC knowledgeable but have a decent multimeter and tools.
So I'll try to keep this clear and not a book.
Have nest gen 2 thermostat, Furnace is Carrier 58HDX060 - - - 10112
Thermostat works fine 95% of time but it drops out occasionally going offline for a few mins at a time.
C wire not connected.
It siphons power somehow but very little. Troubleshooting says connect a C wire for more stability.
I watch some youtube videos tell the wife "Hold my Beer"
Proceed to take the furnace panel off.
Clearly marked C terminal.. has 1 wire on it from the A/C wiring (2 wires total one going to C)
I Find the Blue "C" wire from thermostat wiring bundle connect it to the C terminal on furnace.
The thermostat now reads the C wire and tells me its getting 100ma power.
Fan and AC work perfectly.(was hot yesterday)
Thermostat did not noticeably go offline(you dont know until you adjust temp from phone and it says "nest offline 12min ago" etc)
Today it says Problem with "White Wire" and heat wont kick on.
I go downstairs remove C wire from C terminal.
I did reset the furnace with breaker
Furnace works fine now.
Any idea what the issue is?
Seems bizarre.
I would really like the C wire operative for the thermostat to get all the power it needs and possibly not go sleep mode or whatever its issue is with going offline.
Edit: wiring pics adding pics
The red wire on Y and the White on C are from outside A/C
Paging @KJSmith
So I'll try to keep this clear and not a book.
Have nest gen 2 thermostat, Furnace is Carrier 58HDX060 - - - 10112
Thermostat works fine 95% of time but it drops out occasionally going offline for a few mins at a time.
C wire not connected.
It siphons power somehow but very little. Troubleshooting says connect a C wire for more stability.
I watch some youtube videos tell the wife "Hold my Beer"
Proceed to take the furnace panel off.
Clearly marked C terminal.. has 1 wire on it from the A/C wiring (2 wires total one going to C)
I Find the Blue "C" wire from thermostat wiring bundle connect it to the C terminal on furnace.
The thermostat now reads the C wire and tells me its getting 100ma power.
Fan and AC work perfectly.(was hot yesterday)
Thermostat did not noticeably go offline(you dont know until you adjust temp from phone and it says "nest offline 12min ago" etc)
Today it says Problem with "White Wire" and heat wont kick on.
I go downstairs remove C wire from C terminal.
I did reset the furnace with breaker
Furnace works fine now.
Any idea what the issue is?
Seems bizarre.
I would really like the C wire operative for the thermostat to get all the power it needs and possibly not go sleep mode or whatever its issue is with going offline.
Edit: wiring pics adding pics
The red wire on Y and the White on C are from outside A/C
Paging @KJSmith
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