3.6 Status of the water heater
During operation, the display shows the status of the water heater.
3.6.1 Operating modes
When running, the water heater has four basic operating modes, namely:
OFF (see section 3.6.1.1)
ON (see section 3.6.1.2)
EXTRA (see section 3.6.1.3)
PROG (see section 3.6.1.4)
3.6.1.1 OFF
In this mode, the frost protection is activated. The figure shows the display with the
following information:
line one: the text OFF;
line two: the time, the day and T
1
(see section 4.1.1).
lines three and four: the text FROST PROTECTION ACTIVATED.
3.6.1.2 ON
In this mode, the water heater continually responds to the hot water demand. The figure
shows the display with the following information:
line one: the text ON;
line two: the time, the day and T
1
(see section 4.1.1).
line three: the programmed water temperature T
set
;
line four: is empty when the water heater is idle, or depending on the
operating cycle
(see section 4.1.1), displays a text such as HEAT DEMAND.
3.6.1.3 EXTRA
In this mode, one extra period is programmed and activated. In this mode, the OFF or
PROG mode is temporarily overruled to fulfill a single period of demand. When the period
has passed, the water heater automatically returns to the previous operating mode. The
figure shows the display with the following information:
line one: the text EXTRA;
line two: the time, the day and T
1
(see section 4.1.1);
line three: the switch-on time and the related water temperature setting;
line four: the text PERIOD ACTIVATED.
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0311704_BFC_28-120_III_ENEN_V2.4, 2022-10-17 21
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