Grasslin Towerchron QE1, QE2 Installation & User's Instructions page 42

CONST Press the "HEATING" or
"HOT WATER" button until the permanently - until you move
To switch ON
permanently arrow in the display points to
CONST (Constant)
OFF Press the "HEATING" or
To switch OFF "HOT WATER" button until the permanently - until you move
permanently arrow in the display points
to ADV (Advance)
33
The programmer stays ON
the arrow by using the "HEATING"
or "HOT WATER" button again.
The programmer stays OFF
the arrow by using the "HEATING"
or "HOT WATER" button again.