ERRORS & ALARMS
In case of failure on one of the sensors E1 or E2 and SAFE MODE are ena-
bled in configuration, Safe mode will be activated.
Safe mode toggles the heating output with 50/50 duty cycle (5 minutes ON/
OFF) and the built-in buzzer gives a signal every 5 minutes.
The "HI" alarm and buzzer will be activated if thermostat is in cooling mode
and the temperature difference has been more than parameter "A8" for 2
minutes.
The "LO" alarm and buzzer will be activated if thermostat is in heating mode
and the temperature difference has been more than parameter "A8" for 2
minutes.
The buzzer can be cancelled by pushing the "OK" button.
ERROR
DESCRIPTION
CODE
No signal from external sen-
E1
sor 1.
No signal from external sen-
E2
sor 2.
In cooling mode, the temper-
HI
ature is not decreasing even
though output is activated.
In heating mode, the temper-
LO
ature is not increasing even
though output is activated.
SOLUTION
Check connections to sensor
or replace sensor.
Check connections to sensor
or replace sensor.
10