User Guide

ALARM CONDITIONS

When an alarm condition is reached, the ALARM LED turns ON and the

alarm relay contact is closed (short between the COMMON and NO pins).

All the pumps and the water nozzle are off. The Conductivity and pH

measuring channels display the EC and pH values.

An alarm condition occurs when:

• the water remains below the low level (the sensor contact is open) for

about 30 seconds;

• the high (alarm) level is reached (the sensor contact is closed);

• the humidity sensor detects water leakage;

• an impossible condition is detected, for example when the low level is

not reached and the normal level is reached.

Reset button

To return to normal function, it is necessary that:

• the water level in the tank decreases

below the high (alarm) level sensor;

• the level sensors operate correctly;

• the humidity sensor is dry;

• the RESET button is pressed.