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3.6.1.4 PROG
In this mode a preset week program is active, and the water heater responds continually
to demand within the time periods set in the week program. There are two distinct
situations possible in this mode:
The current time falls within a set time period of the week program.
The figure shows the display with the following information:
line one: the text PROG;
line two: the time, the day and T
1
(see section 4.1.1)
;
line three: the next scheduled switch-off time and the water temperature T
set
of the active period;
line four: is empty, or depending on the
operating cycle (see section 4.1.1),
displays a text such as HEAT DEMAND.
The current time falls outside a set time period of the week program.
The figure shows the display with the following information:
line one: the text PROG;
line two: the time, the day and T
1
(see section 4.1.1)
;
line three: the next scheduled switch-on time;
line four: displays the text PERIOD ACTIVATED.
In all modes, the temperature may at any moment drop below the desired temperature.
The water heater then enters an operating cycle. This
operating cycle (see section 4.1.1)is
identical for all basic operating modes.
Note
Setting and if necessary programming of the basic operating modes are described in the
main menu chapter (see section 4.3).
3.6.2 Error conditions
The figure shows an example of an error condition. If the water heater enters this
condition, the display will show the following information:
line one: error code comprising a letter and two digits, followed by the error
description;
lines two to four: alternately, a brief explanation of the error, and a brief action to
resolve the error.
Note
When the display shows an error code, try to reset the water heater with [RESET].
Contact your service and maintenance engineer or supplier when the water heater does
not restart or when the display shows the error code again.
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