Install GPay kit 4016-001-2 on LG dual-coin machines
Install the Greenwald Pay device between the LG control panel and both coin drops.
- Kit: 4016-001-2
- Installation sheet: INS. 2476-2 Rev A
Installation layout

What you need
- Greenwald Pay machine labels
- Appropriate tool or operator key to open the machine panel
- Smartphone with the Greenwald Pay app

Before you begin
-
Create the room and machine profiles in Greenwald Management System (GMS).
-
Confirm the exact machine model, controller, and kit number.
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Disconnect machine power before opening the console or changing connections.
Install the hardware
- Open the console panel. Connect the Greenwald Pay serial harness to the machine serial plug.

- Connect the two coin harnesses from the Greenwald Pay device to the machine coin drops.

Configure the device
- Leave the console open and restore machine power.
- Wait for initialization. A slow-blinking white LED means the device is not configured and is ready to pair.
- In the Greenwald Pay app, sign in with administrator credentials and select Setup.
- Select the correct account and location.
- Select the device, then select the machine assignment that matches the physical machine label.
- Confirm that the MAC address shown in the app matches the MAC address on the device.
- Label the washer or dryer with its machine number.
- Repeat for every machine.
- Close all console panels when setup is complete.
For additional help, call Greenwald Customer Service at 800-221-0982.
Device LED codes
| Color | Activity | Meaning |
|---|---|---|
| Off | Off | Device not connected to power |
| White | Slow blink | Device not configured |
| Blue | Steady | Selected during configuration |
| Yellow | Slow blink | Loading machine configuration |
| Green | Steady | Configured and ready |
| Blue | Slow blink | Active with phone app |
| Green | Fast blink | Active; Start not pressed |
| Green | Slow blink | Busy; machine running |
| Red | Slow blink | Machine error |
| Red | Fast blink | Machine interface error |
| Blue/Green | Slow toggle | Firmware loading |
| Red | Steady | Firmware error |
Original installation sheet
Download INS. 2476-2 Rev A. The same PDF remains attached to this page.