Timeline for Where's the c-wire on my air conditioner?
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Jun 28, 2023 at 17:07 | comment | added | Rafael | Correct answer! I tried testing for continuity between R and one terminal, but it was shorted to both for some reason (AC voltage, IDK). So I just traced the terminal back to R, and hooked up C to the other. It works now. Thanks! | |
| Jun 28, 2023 at 17:05 | vote | accept | Rafael | ||
| Jun 28, 2023 at 2:25 | comment | added | Harper - Reinstate Monica | If you connect the blue wire to R, the thermostat just won't power up. But it will after you correct it. Just make sure you're on R and C (it should measure ~24V between them). | |
| Jun 28, 2023 at 2:19 | comment | added | Rafael | Thanks for your answer, but I am still unsure where the C terminal is. Is it one of the two terminals on the other side that are still visible on the label, or further inside the AC? Also when you wrote "If you attached C to R by accident, nothing would happen", did you mean that if I shorted R to C (sounds bad), or if I attached the blue wire to R (smart thermostat probably wouldn't work)? | |
| Jun 28, 2023 at 2:13 | comment | added | Rafael | You are a 100% right about the 'COM'. I was so sure that it would be a C wire that I connected the blue wire to it to attach to my smart thermostat, but before I put in the thermostat I (wisely/less stupidly) decided to check the voltage on it. I was shocked (no pun intended) to find that it was 115v to ground. If would've attached my thermostat I would've fried it for sure. | |
| Jun 27, 2023 at 23:45 | history | answered | Harper - Reinstate Monica | CC BY-SA 4.0 |