Fault rectification

Danger to life from electric shock.

Prior to accessing the connection terminals, switch off all supply circuits. Switch off mains fuse, secure against being accidentally switched back on and position a visible warning sign.

Call on the services of a qualified electrician any time there is a fault.
Repairs should only be carried out by qualified electricians.

Malfunction	Cause, measure
Green LED [3] off	Mains fuse is off. Switch the mains fuse on.
Green LED [3] flashes	Measuring probe defective or sensor cable (terminals 6 and 7) interrupted. Call on the services of a qualified electrician.

Malfunction

Cause, measure

Green LED [3] off

Mains fuse is off.

Switch the mains fuse on.

Green LED [3] flashes

Measuring probe defective or sensor cable (terminals 6 and 7) interrupted.
Call on the services of a qualified electrician.

If the fault persists or occurs repeatedly, switch off the mains fuse (disconnect all poles of the unit from the power supply). Have a qualified electrician determine the cause of the fault and eliminate it.