Keyboard Lock" Function; Error Message "Err; Maintenance - Haverland Rctt Lcd Manuel D'installation Et Utilisation

3. OPERATION

3.7 "KEYBOARD LOCK" FUNCTION

Press the and
Repeat the same operation to unlock the keyboard until the KEY symbol disappears.
If there is a power failure while the "key lock" function is activated, the
radiator will continue with "key lock" activated.

3.8 ERROR MESSAGE "ERR"

If the message "Err" is flashing on the screen, your thermostat sensor has been disconnected or
faulty. Consult with our Haverland After-Sales Service.

4. MAINTENANCE

Your device does not require any type of special maintenance.
You need only clean any dust that may accumulate with a dry and soft cloth.
We advise that you clean any accumulated dust from the radiator surface at the beginning of
the winter season.
NEVER USE SOLVENTS OR ABRASIVE PRODUCTS.
buttons simultaneously until a KEY symbol appears on the screen.
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RCTT LCD
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