Testing No Power, Single Group

Testing No Power, Single Group

Testing No Power, Single Group

Time Needed: 10 Minutes


Parts Needed: None


Tools Needed: #2 Phillips Screwdriver
Multi Meter



Circuit Board Reference

#1 - Main power - 24v DC from power supply

#2 - Relay

#3 - Display ribbon cable

#4 - Transducer

#5 - Level probe

#6 - Switches

#7 - RTD

#8 - Pump

#9 - Solenoids



Step 1: Remove cup tray and back panel. Set the panel aside with the ribbon cable still connected
















Step 2: Verify the ribbon cable is connected into #3 port on circuit board and on the display attached to the back panel


Step 3: Verify lights on circuit board are on


If lights are not on, continue to step 4
Step 4: Turn multimeter to AC volts and test power to power supply

If voltage is 240V AC, continue to step 5.
Step 5: Remove #1 port from circuit board. Change multimeter to DC and test outward voltage on power supply



















    • Related Articles

    • Diagnosing SSR Single Group

      Diagnosing SSR Single Group Tools Needed: Voltage meter Remove cup tray and back panel of the machine, being aware of the ribbon cable attached to the control board. Leave the ribbon cable attached and lean the back panel on the machine giving you ...
    • Single Group Board Power Test

      Unplug the machine.  Remove the back panel, being aware of the ribbon cable attached to the screen.  Unplug all the plugs except #1 and #3.  Follow #3 up to the screen and make sure it is attached to the screen, set the back panel to the left side of ...
    • Single Group Internal Diagram

      1. 3-Way Brew Solenoid 8. Vacuum Breaker 2. Needle Valve 9. Pressure Relief Valve 3. Inlet (Autofill) Solenoid 10. Brew Gauge 4. Steam Valve 11. Expansion Valve 5. Hot Water Valve 12. Steam Tank Ball Valve, Drain 6. Transducer 13. Brew Tank Ball ...
    • Checking Steam Tank High Limit Single Group

      Checking Steam Tank High Limit Single Group Tools Needed: Multimeter, #2 screwdriver Time Needed: 10 min Turn off machine and unplug from power Remove cup tray Remove front top panel Remove leads to high limit Check continuity between the poles View ...
    • Single Group Electronics Identification Diagram

      2020 Single Group 1. Display Ribbon Cable 7. Group Cap Magnet Switches 2. Relay Harness 8. Steam Tank Level Probe 3. 24v DC Power 9. Transducer 4. Pump 10. SSR Steam Relay 1 5. Solenoids 11. SSR Steam Relay 2 6. Brew Tank RTD 12. SSR Brew Relay If ...