Eliwell ICPlus 915 Manual page 13

ON-OFF regulation diagram with independent setpoint (H01=0, HC1=H and HC2=C).
The two outputs regulate as though they were completely
independent of each other.
ON-OFF regulation diagram with dependent setpoint (H01=1, HC1=H and HC2=C).
Setpoint 2 (SP2) regulates relative to SP1.
ON-OFF regulation diagram with Neutral zone (or window) (H01=2, HC1and HC2= irrilevant).
If dF1=0 and dF2 = 0, the outputs are deactivated when
SP1 is reached.
ON-OFF CONTROL DIAGRAM
HC1=H
On
HC1=H
On
On
SP1-db2
Off
H01=in
dF1
SP1-dF1 SP1
Off
H01=di
dF1
SP1-dF1 SP1
OUT2
Off
dF2
SP1
SP1-db2+dF2
HC2=C
On
Off
dF2
SP2 SP2+dF2
HC2=C
On
Off
dF2
SP1+SP2 SP1+SP2+dF2
OUT1
On
dF1
SP1+db1-dF1 SP1+db1