K-Rain Hydrotek 2514: System Stops, Pump Not Starting - Check Pump Start Relay

K-Rain Hydrotek 2514 timer rotates but sprinklers don't run. Manual mode doesn't start pump. Previous tech blamed sprinkler head hitting controller causing short, replaced controller twice. System worked a month then failed again. Owner in Florida with St. Augustine grass needs water.

Critical System Architecture Issue

The Hydrotek 2514 outputs 24VAC. A pump requires 110/220VAC. You must have a pump start relay between the controller and pump.

How It Works

1. Controller sends 24V to pump start relay coil
2. Relay coil closes high-voltage contacts
3. Full line voltage (110/220V) reaches pump motor

Troubleshooting the Pump Start Circuit

1. Verify pump start relay exists between controller and pump
2. Check 24V at relay coil terminals when controller runs
3. If 24V present but pump doesn't run → Relay contacts bad or pump circuit breaker tripped
4. If no 24V at relay → Controller or wiring issue

Water Causing Shorts?

Yes - if a sprinkler head sprays directly onto the controller or pump start relay enclosure, water intrusion causes shorts. The enclosure must be weatherproof and positioned away from spray patterns.

Next Steps

Send photos of: controller, pump start relay, pump. Confirm system has pump start relay with 24V coil. Check circuit breaker for pump circuit.