A1A* : Undercurrent

To avoid serious injury follow all warnings and instructions in the manual. Wear appropriate personal protective equipment.

Visually check circuit breaker for a tripped condition.

Allow zone to cool down

Measure voltage across input terminals on power line filter. Voltage should measure between 190 and 250 Vac.

Check for loose or disconnected wires and plugs.

Visually check circuit breaker for proper setting of L2 and L3.

Measure resistance of heater.

Visually check GFCI for a tripped condition.

Measure voltage across the disconnect switch. Voltage should measure between 190 and 275 Vac.

Ensure zone is set for type of hardware connected to it.