SLIDE SWITCH
The Slide Switch has two positions: UNLOCKED and LOCKED. In the LOCKED position, the Touch Lock indicator will
be visible on the LCD, and it will not be possible to change the ST620 settings. If you are unable to change any thermostat
settings, check that the Slide Switch is in the UNLOCKED position.
RESET BUTTON
The Reset Button is provided as a way to restore the thermostat to its default factory settings. Pressing this button will
delete any previously entered settings.
After pressing the Reset Button, the ST620 will revert to the following (default) settings:
Mode:
Auto
Programme:
6
Time:
12:00am
DST:
On
Control method:
On/Off
Holiday:
Off
Frost:
Off
Sleep:
Off
RF address code:
factory setting
RF COMMUNICATION
When the ST620 is operating in AUTO mode, if the Boiler Control has not received a signal from the ST620 after 1 hour,
the Boiler Control will turn off the boiler, and the LED indicator will flash constantly (two times every second).
Once the Boiler Control receives a valid ON or OFF signal, the Boiler Control will control the heating system accordingly.
ST620ROF INSTRUCTION MANUAL
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SALUS ST620ROF Manual 003.qxp_89 11/08/2015 09:45 Page 39
