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Normal operation
Installation, use and maintenance manual – K18 Hybrigas
49
6
To raise/lower the water temperature set-point, proceed
as follows (also see Paragraph 6.4
p. 46):
1. Access menu 3 parameter 225 (= setpoint origin) with keys
and
; set parameter 225 to 0 (fixed setpoint - see
2. Set parameter 226 (fixed setpoint in heating operation) to
the desired temperature setting.
3. Exit menu 3 by pressing the
key until displaying the letter
"E" for exit, then press the
key.
4. The water temperature values alternate again on the display:
output, input and the difference between them.
6.6
RESTARTING A LOCKED-DOWN UNIT
Fault signals on the display
In the event of heat pump module or boiler module locked-
down, an operational code flashes on the corresponding display
of the involved module.
▶
To restart the appliance you must know and perform the
procedure concerning the issue signalled and identified by
the code of the module involved (Paragraph 8.1
p. 54 for
the heat pump module and Paragraph 8.2
p. 56 for the
boiler module).
▶
Only act if you are familiar with the issue and with the pro-
cedure (technical expertise and professional qualifications
might be required).
▶
If you do not know the code, the problem, or the procedure,
or you do not have sufficient skills, and in any case of doubt,
contact the TAC.
Locked-down appliance
An external intervention (reset or repair) is required due to an
appliance fault or problem with the system.
▶
A reset may be enough for a temporary and provisional
anomaly.
▶
For a fault or breakdown, alert the maintenance technician
or TAC.
6.6.1
Reset heat pump module
There are three options for resetting a fault:
1. If the appliance is connected to the OQLT019 controller, you
may act through the control device, as described in the rel-
evant manual.
2. If a remote reset button has been provided (Paragraph
p. 37) act directly on the button.
3. Act on unlock/reset button under unit display (reference J
Figure 1.3
6.6.2
Reset boiler module
To reset a fault, act on unlock/reset button (Figure 1.3
p. 10 -
detail H).
6.7
MESSAGES ON THE BOILER DISPLAY
Figure 6.2
Boiler display icons
1
Parameter number indication or displayed info code
2
Parameter programming function active
3
Not used
4
Not used
5
Not used
6
Not used
7
Temperature display / setpoint / parameter value
8
OpenTherm communication present (remote control / area control unit)
9
Insufficient system water pressure signal
10 Flame presence signal / it also indicates, on 3 percentage levels, the
modulating power level of the boiler
11 Operation in domestic hot water mode enabled
12 Resettable error signal
13 OFF operating mode
14 Non resettable error signal
15 Operation in heating mode enabled
4
5
6
7
9
10
11
12
13
14
15
1
2
3
8
≤ 33%
>
33%
<
66%
>
66%
<
100%
Info menu display
To view the boiler data from Info menu you have to:
1.
remove the display transparent cover (detail G Figure
p. 10) by removing the fixing screws;
2. press the
key (detail 2 Figure 1.15
p. 21). The info code
will be displayed on the left side of the screen and its relative
value will be displayed on the centre of the screen.
3. use keys + and - of the space heating circuit
(detail 1 Fig-
ure 1.15
p. 21) to scroll through the list of displayable data.
4. To exit the Info menu press
key (detail 2 Figure
p. 21);
5. fit the transparent cover (detail G Figure 1.3 p. 10) by
screwing in the fixing screws;
p. 50 shows the list of Info menu displayable data.