Installing 4-Wire (Neutral Required) Smart Switches
Installation instructions for Single-Pole, 3-Way and 4-Way setups. Reminder that Cync 4-Wire (Neutral Required) Switches and Dimmers require neutral and ground wires.
Jump to instructions based on the type of install you are doing:
Need assistance? Jump to troubleshooting steps:
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Compatible Bulb Lists for Switches
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4-Wire (Neutral Required) Switch Compatibility and Wiring Configurations
Single-Pole Installation
Single-Pole installation means you are installing one switch that controls one circuit and one set of lights.
NOTE: Video instructions will slightly differ if you are installing our 4-Wire (Neutral Required) On/Off Switches (Button, Toggle, Button). The Line and Load wires on the back of these Smart Switches are interchangeable, allowing you to connect either black wire on the switch to the Line or Load wire from the wall.
Download the Installation Guide for the single-pole installation of your Cync/C by GE 4-Wire (Neutral Required) Smart Switch.
⇒ 4-Wire (Neutral Required) Dimmers, Single-Pole Digital Installation Guide
(Motion Sensing Dimmer and Dimmer Switch)
⇒ 4-Wire (Neutral Required) On/Off Button Switch, Single-Pole Digital Installation Guide
⇒ 4-Wire (Neutral Required) On/Off Toggle/Paddle Switch, Single-Pole Digital Installation Guide
3-Way Installation
3-Way installation means you are installing two switches that control one circuit and one set of lights.
NOTE: All switches on the same circuit must be replaced with a Cync or C by GE Smart Switch. For example, if you replace one switch on the circuit with Cync/C by GE Smart Switch, you will need to replace all the switches on that same circuit with a Cync/C by GE Smart Switch.
Download the Installation Guide for the 3-Way installation of your Cync/C by GE 4-Wire (Neutral Required) Smart Switch.
⇒ 4-Wire (Neutral Required) Switch, 3-Way Digital Installation Guide
Dead End 3-Way Installation
3-Way installation means you are installing two switches that control one circuit and one set of lights.
NOTE: All switches on the same circuit must be replaced with a Cync or C by GE Smart Switch. For example, if you replace one switch on the circuit with Cync/C by GE Smart Switch, you will need to replace all the switches on that same circuit with a Cync/C by GE Smart Switch.
Download the Installation Guide for the Dead End 3-Way installation of your Cync 4-Wire (Neutral Required) Smart Switch.
⇒ 4-Wire (Neutral Required), Dead End 3-Way Digital Installation Guide
California 3-Way Installation
3-Way installation means you are installing two switches that control one circuit and one set of lights.
NOTE: All switches on the same circuit must be replaced with a Cync or C by GE Smart Switch. For example, if you replace one switch on the circuit with Cync/C by GE Smart Switch, you will need to replace all the switches on that same circuit with a Cync/C by GE Smart Switch.
Download the Installation Guide for the California 3-Way installation of your Cync 4-Wire (Neutral Required) Smart Switch.
⇒ 4-Wire (Neutral Required), California 3-Way Digital Installation Guide
4-Way Installation
4-Way installation means you are installing three switches that control one circuit and one set of lights.
NOTE: All switches on the same circuit must be replaced with a Cync or C by GE Smart Switch. For example, if you replace one switch on the circuit with Cync/C by GE Smart Switch, you will need to replace all the switches on that same circuit with a Cync/C by GE Smart Switch.
Download the Installation Guide for the 4-Way installation of your Cync/C by GE 4-Wire (Neutral Required) Smart Switch.
⇒ 4-Wire (Neutral Required) Switch, 4-Way Digital Installation Guide
Troubleshooting
Your switch is not in setup mode if the LED light on your switch is not flashing blue after you've installed it. This means you will not be able to connect it to the Cync app.
If the LED light did not turn on: here are some common solutions:
- Confirm the breaker is on
- Check that the switch is wired correctly
If the light ring is flashing red, this means the circuit is overloaded. Max load rating is 150W for LED and 450W for incandescent/halogen.
Troubleshooting for Buzzing Switch
Some low threshold level of buzzing is normal if listening close to the switch. If the switch is buzzing at a volume above the threshold, perform the following checks.
- If total circuit wattage is over 150W for an LED bulb or over 450W for an incandescent/halogen bulb, remove some lights from the circuit or replace with lower wattage bulbs.
- If the buzzing sounds originates from the light bulbs, swap in a different incandescent/halogen bulb or a bulb from the compatible list.
- If the load is a Cync Smart Bulb, ensure load type is set to Smart/Cync lights in the Cync App.
- If the switch type is a Dimmer or Motion Dimmer, ensure the load lights are dimmable.
- If the switch type is an On/Off switch and the bulb is NOT on the compatible list, swap in a different incandescent/halogen bulb or a bulb from the Compatible list.
NOTE: This smart switch is not compatible with ceiling fans. We have a specific product designed for ceiling fans, the Cync Ceiling Fan Smart Switch.
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