HRC 100 Troubleshooting

One or more valves do not turn on

• Faulty solenoid connection
• Wire damaged or severed
• Flow control stem screwed down, shutting valve off
• Programming is incorrect

Stations turn on when they are not supposed to

• The water pressure is too high
• More than one start time is programmed
• AM/PM is incorrect

One station is stuck on and will not shut off

• Faulty valve
• Particles of dirt or debris stuck in the valve
• Valve diaphragm faulty

All valves do not turn on

• Transformer defective or not connected
• Programming is incorrect

The controller will not power up

• Transformer not plugged into a working outlet

Valves continue to turn on and off when they are not programmed

• More than one start time is programmed with overlapping schedules
• Excessive pressure

Intermittent faults when the pump is connected

• An incompatible pump start relay is being used.