Why isn't my new timer switch working after wiring it up?
Timer switches often fail to turn on after installation because of incorrect wiring or a missing neutral wire setup. For first-time homeowners, this creates a nerve-wracking situation where they cannot safely complete a simple bathroom fan switch replacement without risking electrical mistakes.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Asking for wiring configuration help and clarification on forums like Reddit
- 2Consulting product instruction sheets
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“Im a new homeowner, and this is my first time doing anything involving electricity. I’m comfortable turning off the power and checking to make sure it’s off with a voltage tester, but I’m still a bit nervous about doing something wrong and potentially burning my house down.”source ↗
“I’m hoping to replace the switch on the left, which turns our bathroom fan on and off, with a Leviton countdown timer switch.”source ↗
Where this came up
People with this problem also raised
- 8How to replace a sparking or melted light switch safely
- 3How to replace an old mercury thermostat with a programmable one
- 2Why does turning off the light switch turn off the outlet?
- 6How to swap the order of wall light switches
- 3How do I use a transfer switch for a backup generator?
- 2How to figure out what an unswitched wall light is connected to