Led Indicators; Switch Function Key; Manual/Automatic Operation; Forced High Mode - DeDietrich 310 ECO Series Installation And Operating Manual

11.1.2 LED indicators

The instrument panel has 4 indicating LED's with the following functions:
The LED above the [-] key (in the  symbol); when illuminated green confirms the boiler is in manual
▪
override (see section 11.2)
▪
The LED above the [] key indicates that "24 hour pump operation" has activated the heating pump
(and the shunt pump if required).
▪
The LED above the [+] key flashes if the optional hydraulic pressure sensor detects that the water
pressure is too low.
▪
The LED above the [] key flashes if there is no communication with the code key (code key not
connected).
▪
Two LED's flash green when there is no communication anymore between code key and control unit.
The boiler will keep on operating. Only after the power supply was switched off and back on, the boiler
will refuse to operate.

11.2 Switch function key

Some keys on the instrument panel have dual functions, i.e. a programming and a switch function.
The programming function is described in section 13.
The switch function (on or off) is activated by pressing down the relevant key for 2 seconds. Whether the function
is switched on or off is indicated by the indicator for the key, which is either lit or not lit, or by the appearance of a
letter in the code window.

11.2.1 Manual/automatic operation

If the [-] key is pressed for 2 seconds the boiler will switch on, even if there is no heat demand from an external
control. The green LED above the key stays on continuously to indicates a manual heat demand (central heating
bridged internally). When the [-] key is pressed for 2 seconds again the boiler will return to automatic central
heating operation (green LED off).

During manual operation the flow temperature cannot exceed its pre-set maximum value. This is to protect
the boiler and the system. Parameters can be changed during manual operations.

Important!! If the external heating pump is not connected to the control unit, the pump will not be switched.
11.2.2 Forced mode 'high' (
By pressing the  and [+]-key simultaneously in operating mode during 2 seconds, the boiler will run at maximum
power. The letter  will now appear on the display. To protect the boiler and the system, the flow temperature
cannot exceed its pre-set maximum value. This is...Parameters can be changed in this mode. By pressing the
[+]-key and {-}-keys simultaneously, the boiler will return to operating mode.
Following a manual override the boiler will return to normal (auto control) if no keys are used within a 15-minute
period.
11.2.3 Forced mode 'low' ()
By pressing the  and [-]-key simultaneously in operating mode, the boiler will run at minimum power. The letter
 will now appear on the display. To protect the boiler and the system, the flow temperature cannot exceed its
pre-set maximum value. This is... Parameters can be changed in this mode.
By pressing the [+]-key and [-]-key simultaneously, the boiler will return to operating mode.
Following a manual override the boiler will return to normal (auto control) if no keys are used within a 15 minute
period.

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De Dietrich Gas 310/610 ECO