Electronics Panel Layout - V3 (Legacy)

Electronics Panel Layout - V3 (Legacy)



Espresso V3 Electronics Panel Layout - (Legacy)
Date of Manufacture ~2015 - 10/2022


SLAYER recommends all service be performed by an experienced SLAYER Espresso trained technician. For a technician reference near you, please contact SLAYER Support at (206)-281-7171 (#1 in Directory) or email support@slayerespresso.com.
For current rev panel layout: Click HERE.
Panel layout demonstrated on a two group V3. For three group layouts, acknowledge additional relays, PID, molex bundle, and timer knob will be positioned to the right (if viewed from above as demonstrated in the images below) of second group mechanicals. 


  1. 1 - Main Power Harness
    1. Power Harness Wiring
  2. 2 - Autofill & Mix Valve Harness
  3. 3 - Group 1 Molex Bundle
  4. 4 - Group 2 Molex Bundle
  5. 5 - Thermocouple Molex
    1. Preheat 
      1. RED (Out1/SD1)
    2. Steam 
      1. BLUE (Out2/SD2)
  6. 6 - Hot Water Button
Electronics Panel Layout:


  1. 1 - Group 1 Fuji PID
  2. 2 - Group 2 Fuji PID
  3. 3 - Power Supply
    1. 30000-20003 - Cosel Power Supply (Legacy)
  4. 4 - Autofill Box (Controller)
  5. 5 - Love Controller
  6. 6 - Group 1 SSR
  7. 7 - Group 2 SSR
  8. 8 - Autofill Kill Relay
    1. Configured N/C position!
  9. 9 - Pump Relay
  10. 10 - Mix Valve Relay
  11. 11 - Group 1 Brew Valve Relay
  12. 12 - Group 1 Needle Valve Relay
  13. 13 - Group 2 Brew Valve Relay
  14. 14 - Group 2 Needle Valve Relay
  15. 15 - Group 1 Timer Relay
  16. 16 - Group 2 Timer Relay
  17. 17 - Group 1 Timer Knob
  18. 18 - Group 2 Timer Knob
Reminder! Group 3 relays, PID, molex bundle, and timer knob will be positioned to the right of Group 2 if layout is viewed from above.

Solenoid Valve Relay Layout


  1. 8 - Autofill Kill Relay
    1. Configured N/C position!
  2. 9 - Pump Relay
  3. 10 - Mix Valve Relay
  4. 11 - Group 1 Brew Valve Relay
  5. 12 - Group 1 Needle Valve Relay
  6. 13 - Group 2 Brew Valve Relay
  7. 14 - Group 2 Needle Valve Relay

Troubleshooting & Resources:
  1. SLAYER V3 Parts Diagram
  2. Mechanical Relay
  3. Fuji PID Wiring
  4. Love Controller Wiring

Questions or concerns? Please contact support@slayerespresso.com

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