Timeline for Two fans on a single switch... run slow?
Current License: CC BY-SA 4.0
21 events
| when toggle format | what | by | license | comment | |
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| Oct 27, 2023 at 13:38 | comment | added | Jason Axelrod | @TomCarpenter setting the fan to "max speed" is only relevant if the fan itself has a speed control. This fan is an AC fan, and has no speed controls. The fan speed is controlled entirely by the load on the switch. There are no pull chains or canopy. | |
| Oct 24, 2023 at 15:09 | comment | added | manassehkatz-Moving 2 Codidact | @JimmyJames I am an IT guy. I have done basic low-voltage wiring (modems, serial ports, DSL, ethernet, etc.) for 40+ years. I only work on 120V/240V in my own home, but I have learned a lot over the last several years both by doing things and through DIY SE. | |
| Oct 24, 2023 at 14:25 | comment | added | JimmyJames | @TomCarpenter Interesting but I don't see how that explains the fans running at full speed when the other is disconnected. | |
| Oct 24, 2023 at 14:24 | comment | added | JimmyJames | @manassehkatz-Moving2Codidact Huh. I figured you were a pro of some flavor. Anyway, it's almost like the switch is controlling the available amperage, but I feel a little silly suggesting that. | |
| Oct 24, 2023 at 11:13 | comment | added | Tom Carpenter | Out of curiosity, did you set both fans to max speed before connecting the controller? There is a note here which says: "Before installing your fan switch, please ensure the fan motor is set to high speed. If you notice that after you install your fan switch the speeds are not as fast as they were prior to installing your switch, it's likely that the motor was not on high (please adjust if you find this is the case)." | |
| Oct 24, 2023 at 1:02 | comment | added | manassehkatz-Moving 2 Codidact | @JimmyJames I'm no electrical genius. Just read and think a lot. But thanks for the compliment. But in any case, the very fact of a strict limit of 2 and the way speed controls are done (in general) makes me suspect that even with 2 it isn't necessarily going to work so well. It is conceptually the same as dimming lights but practically quite different. | |
| Oct 23, 2023 at 21:00 | comment | added | JimmyJames | I'm stumped and unless one of the electrical geniuses like manassehkatz come up with anything, I'd suggest you contact the manufacturer. | |
| Oct 23, 2023 at 20:37 | comment | added | Jason Axelrod | On high, the double fans still run slower than the single fan. | |
| Oct 23, 2023 at 20:31 | comment | added | JimmyJames | What happens when you set both switches to high? Are the coupled fans still slower than the singleton? | |
| Oct 23, 2023 at 20:16 | comment | added | Jason Axelrod | @JimmyJames yeah, made no difference which fan I disconnected. So they are definitely in parallel. | |
| Oct 23, 2023 at 20:12 | comment | added | JimmyJames | Yeah, I saw that. It was just my first thought. Have you tried disconnecting each fan separately with the same outcome? | |
| Oct 23, 2023 at 20:06 | comment | added | Jason Axelrod | @JimmyJames I just disconnected one of the fans, and the other fan still works... in fact, it sped up back to normal speed. So I don't believe this is the issue. | |
| Oct 23, 2023 at 19:59 | comment | added | JimmyJames | @crip659 If they are in series, I would expect disconnecting one to disconnect both. It may not be that simple. | |
| Oct 23, 2023 at 19:53 | comment | added | crip659 | @JimmyJames Seems to be the answer. If they are wired wrong the voltage will be reduce with both devices on. | |
| Oct 23, 2023 at 19:48 | comment | added | Jason Axelrod | @JimmyJames I have no idea... | |
| Oct 23, 2023 at 19:47 | comment | added | manassehkatz-Moving 2 Codidact | @asinine I saw the same specs. And then checked the fan specs - 44W, which is < 0.5A per fan. So in theory 2 of the same fan type should work. | |
| Oct 23, 2023 at 19:47 | comment | added | Jason Axelrod | @asinine there are two fans on the switch. | |
| Oct 23, 2023 at 19:44 | comment | added | DIY75 | Maximum Load (Watts): 2.5 Amps (No more than 2 fans on the switch) | |
| Oct 23, 2023 at 19:43 | comment | added | JimmyJames | Are these fans wired in series instead of parallel? | |
| S Oct 23, 2023 at 19:19 | review | First questions | |||
| Oct 23, 2023 at 22:42 | |||||
| S Oct 23, 2023 at 19:19 | history | asked | Jason Axelrod | CC BY-SA 4.0 |