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Install GPay kit 4004-103-3 on ACA machines (120 LineV Power Supply)

The Greenwald Pay device installs into the machine control board.

  • Kit: 4004-103-3 — ACA (120 LineV Power Supply)
  • Installation sheet: INS. 2473-6 Rev B

Installation layout

ACA Greenwald Pay serial connection, device, and power-conditioner installation layout

What you need

  • Greenwald Pay machine labels
  • Appropriate tool to open the machine panel
  • Smartphone

4004-103-3 kit and the tools needed for installation

Before you begin

Set up room and machine profiles in Greenwald Management System (GMS) before installing the device.

Check INS.2486: Enable serial payment on Alliance Quantum Gold Pro machines before installation to determine whether you have a Quantum Gold Pro machine. Serial Payment System must be enabled on the specified machines.

Install the hardware

  1. Disconnect power to the machine. Open the console panel. Install the serial communications connector from the Greenwald Pay device into the machine control board.

Serial communications connector installed on the ACA control board

  1. Connect the two power plugs from the Greenwald Pay device to the machine's power source. You may need to access these plugs through the back of the machine.

Two Greenwald Pay power plugs connected to the machine power source

  1. If you have a Quantum Gold Pro machine, skip this DIP-switch step. For other applicable machines, ensure DIP switch #3 is turned on. Leave all other switches in their original positions. Change switch positions only with power off.

ACA DIP switch 3 in the On position; skip this step for Quantum Gold Pro machines

  1. Secure the Greenwald Pay power conditioner with the included double-sided tape.

Greenwald Pay power conditioner secured with the included double-sided tape

Configure the device

  1. Leave the console panel open and restore machine power. After initialization, the Greenwald Pay device will blink white slowly, indicating that it is not configured and is ready to pair with the profiles set up in GMS.
  2. Log in to the Greenwald Pay app with administrator credentials and select Setup. Machine profiles must be configured in GMS before pairing.
  3. Select your account.
  4. Select your location.
  5. Choose the machines to pair.
  6. Label each washer and dryer with its machine number as you configure it. The MAC address on the device and in the app must match for the machine to pair correctly.
  7. Repeat for each machine.
  8. Close all machine console panels when installation 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 & 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

Machine error codes

Error codeMeaningWhat to do
EC18 + EC19No communication between reader and control boardCheck all wiring. Check for proper setup and take note of the Greenwald Pay LED colors.
EC11Initialization errorPower down, power up, and try again.
EC1APayment System initialization on a Front End Control-only system (2019 setup on a 2020 controller)Change the GMS machine configuration.
EC05Invalid data from readerCheck for the correct machine type. Check the programming options for invalid or out-of-range values.

Original installation sheet

Download INS. 2473-6 Rev B (PDF). The same PDF is attached to this page.

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