Operating instructions

b) Selecting the temperature unit (‘

°C°F°C°F

°C°F’)

Here you can select whether the temperature is to be displayed in degrees Celsius (°C) or

degrees Fahrenheit (°F).

• Press the ‘PROG’ button until ‘

SondSond

Sond’ appears on the LCD (for special function).

• Use the scroller to select the special ‘

°C°F°C°F

°C°F’ function.

• To confirm your selection, briefly press the ‘PROG’ button.

• You can use the scroller to switch between ‘°C’ and ‘°F’.

• To confirm your selection, briefly press the ‘PROG’ button. The heating control now returns

to the normal operating mode.

c) Setting the date and time (‘

dAtdAt

dAt’)

• Press the ‘PROG’ button until ‘

SondSond

Sond’ appears in the LCD.

• Use the scroller to select the ‘

dAtdAt

dAt’ function.

• To confirm your selection, briefly press the ‘PROG’ button.

Carry out all further settings as described in section 9, page 15.

d) Setting the security code (‘

CodECodE

CodE’)

To protect the heating control against interference from other radio systems the device uses

a two-part security code.

Each part of the code comprises 100 setting options. This means that a total of 10,000 different

security codes are available.

To ensure communication between the ‘FHT80B-3’ heating control and the ‘FHT8V’

valve operating mechanism/s the same security code has to be set for all the

devices in a room.

This is particularly important, if you use more than one valve operating mechanism

or you have not purchased a set (heating control and valve operating mechanism).