Make a Hayward Super Pump Smarter with Sonoff + Home Assistant

This guide covers a full relay-control integration for the Hayward VS SuperPump 700 using a Sonoff 4CH Pro and Home Assistant. The goal is reliable remote speed control, predictable turnover, and a documented maintenance workflow tied back to Pool Vault.

System objective

We are using Sonoff relays as dry-contact signal gates to feed control voltage to pump inputs (INP1/INP2/INP3). Home Assistant handles automations and schedule logic. Pool Vault stores equipment metadata, service history, and exported records.

Hardware bill of materials

• Pump: Hayward VS SuperPump 700 (external relay input capable)
• Relay: Sonoff 4CH Pro (4-channel relay, dry-contact behavior)
• Power: 15V 2A DC power supply
• Control wiring: 18-22 AWG minimum, 300V insulation minimum

Electrical architecture (core concept)

The architecture uses a shared ground reference. Sonoff COM receives +15V. Sonoff NO contacts route +15V to pump inputs when channels are activated. Pump COM is tied to power supply negative.

• PSU +15V → Sonoff COM on CH1/CH2/CH3
• PSU -15V (ground) → Pump COM
• Sonoff CH1 NO → Pump INP1
• Sonoff CH2 NO → Pump INP2
• Sonoff CH3 NO → Pump INP3
• Sonoff CH4 unused

Speed control logic (8 combinations)

Mandatory pump configuration

1. DIP switch #1: set to ON (required for external relay control)
2. Control mode: set to Relay Control
3. Timers: disable/clear internal schedules
4. Restrictions: remove speed range limits
5. State: test only in normal Run mode

Home Assistant workflow

In Home Assistant, expose CH1/CH2/CH3 as switch entities and create speed presets using deterministic combinations. Keep a short debounce/transition delay between state changes to avoid overlapping relay signals.

• Activate only required channels for each speed profile
• Hold state for 3-5 seconds during manual validation
• Wait 5-10 seconds before changing to another profile
• Use schedule automations for turnover windows and boost cycles

Troubleshooting protocol

Phase 1: connection verification

• Confirm PSU -15V on pump COM
• Confirm PSU +15V bridged to Sonoff COM terminals
• Confirm Sonoff NO landed on INP1/INP2/INP3

Phase 2: voltage verification

• Measure 15V at PSU output
• Measure 15V from pump COM to supply positive
• When channel active, measure 15V from pump COM to active INP

Phase 3: configuration verification

• DIP #1 is ON
• Relay Control mode active
• Internal timers disabled

Gold-standard isolation test

If relays appear correct but speeds do not change, isolate Sonoff and perform a manual jumper test: apply +15V directly to INP1 (with pump COM tied to -15V). If no response, issue is pump-side configuration/firmware/service, not relay wiring.

Safety and legal caution

Tie-in: Pool Vault operational ledger

After wiring and configuration, use Pool Vault as your documentation system:

• Log pump model, serial, install date, and warranty in Equipment
• Track service events (backwash, inspections, technician notes) in Maintenance Log
• Create recurring verification tasks (wiring check, relay test cadence)
• Export service reports for support calls and seasonal records