User Manual

56 / 66

Siemens RDF302 Basic documentation CE1P3079en

Smart Infrastructure 2020-02-21

4.3 Operation

See also Operating Instructions B3171 [2] enclosed with the thermostat.

RDF302, RDF302/VB, RDF302.B

1 Operating mode selector

2 Button to change fan operation

3 Buttons to adjust setpoints and control parameters

User action Effect, description

Normal operation Actual operating mode and state are

indicated by symbols

Press any button

(thermostat in normal operation)

Backlit LCD turns on and… (see below for

further action)

After the last operation and a timeout of 20

seconds, the LCD backlight turns off

Press left button Change operating mode

Press left button (P01 = 2) Toggle between heating and cooling

Press left button >5 seconds Activate / deactivate key lock

Press right button Change fan mode

Press + or – Adjusts the Comfort room temperature

setpoint .

Thermostat changes to Comfort mode

Press + and – >3 seconds, release,

then press + again >3 seconds

Go to parameter setting mode “Service

level”

Press + and – >3 seconds, release,

then press – again >3 seconds

Go to parameter setting mode “Expert

level”, diagnostics and test

Layout

Button operation