Yes – leave the link in the boiler.
Your device is in cooling mode. You need to go to the service section on the menu. Type in the code (372) and turn the setting from cool to heat to solve this issue.
The code to unlock service mode is 372.
No, The ST620WBC is not an Internet thermostat and does not require and app.
I have a metal flap on my boiler, could this effect communication between the thermostat and receiver?
YES if possible leave the flap down so there is clear communication.
I’m replacing my existing thermostat that is wired into the boilers external loop. Do I need to put the link back in when I install the plug in receiver?
Yes – the link needs to be in when you install the SALUS plug in receivers.
Press OK once on the thermostat, go round to pair then press OK twice, (10 sending should display on screen). Gently press and hold the SYNC button with a blunt object (e.g. paperclip). After 5 seconds the Boiler Control LED will flash once to indicate it is ready to pair and ready to receive a signal from the ST620.
Your thermostat is timed and temperature controlled, please use a low temperature if you do not require the heating on for a specific time.