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Replies: 14
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Legend [16733]
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Question for HVAC experts
Jan 12, 2024, 9:29 AM
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I just bopugh a Nest Learning Thermostat. While installing it I got an error message saying my thermostat wires are missing C wire. Nest sent me a Power Connector kit to solve this problem. I went to install the kit to my outside HVAC unit and there is no Termonal Block on the outside unit. I have a Heil Model PGS448115KGPOE1
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CU Guru [1036]
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Re: Question for HVAC experts
Jan 12, 2024, 9:32 AM
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How many colored wires do you have at your thermostat? Do you have any that aren’t being used?
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Legend [16733]
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Re: Question for HVAC experts
Jan 12, 2024, 9:36 AM
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I am using 4 wires. The rest are there but not being used.
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CU Guru [1036]
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Re: Question for HVAC experts
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Jan 12, 2024, 9:55 AM
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Ok where the thermostat wire goes into the unit there should be a brown wire in that compartment that isn’t connected to the thermostat wire. Take one of you spare thermostat wire colors (blue, black or brown)and connect it to that brown unit wire. Then go inside and connect that (blue, black, or brown) wire to the C terminal on the thermostat and you’ll be good to go.
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CU Guru [1036]
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Re: Question for HVAC experts
Jan 12, 2024, 9:56 AM
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Ok where the thermostat wire goes into the unit there should be a brown UNIT** wire in that compartment that isn’t connected to the thermostat wire. Take one of you spare thermostat wire colors (blue, black or brown)and connect it to that brown unit wire. Then go inside and connect that (blue, black, or brown) wire to the C terminal on the thermostat and you’ll be good to go.
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Legend [16733]
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Re: Question for HVAC experts
Jan 12, 2024, 10:03 AM
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Attached are pics of outside unit. Can you identify which brown wire in the unit to connect to?
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CU Guru [1036]
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Re: Question for HVAC experts
4
Jan 12, 2024, 10:10 AM
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Ok in the last picture take the wire nut off of that brown wire and connect it to the black thermostat wire. Then go inside to the thermostat and connect the black wire to the C terminal.
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All-In [32656]
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This place is amazing . . .***
1
Jan 12, 2024, 10:13 AM
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Legend [16733]
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Re: Question for HVAC experts
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Jan 12, 2024, 10:47 AM
[ in reply to Re: Question for HVAC experts ] |
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Great. I’ll be back at the house later today.
Thanks
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CU Guru [1036]
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Re: Question for HVAC experts
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Jan 12, 2024, 10:58 AM
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No problem. Keep me posted as to how it goes.
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CU Guru [1036]
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CU Guru [1959]
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Re: Question for HVAC experts
Jan 12, 2024, 11:16 AM
[ in reply to Re: Question for HVAC experts ] |
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You are correct in everything you have said. However, the black thermostat wires inside the air handler, one going to the outdoor unit and the other to the thermostat, will most likely need to be connected together.
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CU Guru [1036]
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Re: Question for HVAC experts
Jan 12, 2024, 12:17 PM
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He has a package unit. Ignore his post and follow my directions.
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110%er [6934]
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Re: Question for HVAC experts
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Jan 12, 2024, 10:35 AM
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All-American [563]
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Send it back
Jan 12, 2024, 11:57 AM
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Get a Sensi. Easier to install and easy to operate.
Not a paid promotion. I have a second home and use this in both to monitor and adjust when out of town. You just need wifi to operate.
I use the ST55U at both.
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Replies: 14
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