5.2 Defrosting Mode (left hand position of the switch)
In the left hand position of the operating mode switch the
thermostat provides defrosting in the vicinity of the installation, and,
in order to avoid the possibility of freezing, it switches the boiler or
any other heating appliances connected to the thermostat on and
off below and above +7.0°C, respectively. During defrosting the
normally open contact pairs, i.e. No.
1
(NO) and No.
2
(COM) of the
relay of the receiver unit clamp shut and, as a consequence, the
device connected to the receiver unit is switched on. The activated
state is indicated by the appearance of a (snowflake) icon
on the LCD display. During defrosting the temperature adjustment
buttons are inactive.
6. BATTERY REPLACEMENT
The average lifetime of the batteries is 1 year. The “ ” icon
alternately replacing the temperature value on the LCD display
indicates low battery voltage. Replace the batteries whenever the
“
ddd
” icon indicating low battery voltage appears on the display
(see Section 3). After battery replacement, the desired temperature
should be adjusted again, because during the battery replacement
the thermostat is reset to factory default settings.
7. THE RECEIVER UNIT
7.1 Installation and connection of the receiver unit
The receiver unit should be mounted on the wall in a place
protected against moisture in the vicinity of the boiler.
ATTENTION!
Do not install the receiver unit under the housing
of the boiler because it may shield radio signals and compromise
wireless (radio-frequency) connection. To avoid electric shock,
entrust a specialist with connecting the receiver unit to the boiler.
Unscrew the two screws at the bottom of the receiver unit without
removing them. Following this, remove the front panel of the receiver
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