22
-
Installation & Servicing
INSTALLATION
25 CONTROLS OPERATION AND DISPLAY
During normal operation of the
, the status of the appliance can be determined from the display.
The first digit shows the status of the boiler, the last 2 digits display the current flow temperature, except with
status 1, 2 or 5 when the number indicates the burner module about to start.
All other displays refer to error messages, see Frames 46 and 47 for details.
1
2
4
3
5
7
6
S
T
O
R
E
M
O
D
E
R
E
S
E
T
S
T
E
P
Reset
Display
Mode
Step
Store
+ -
On/Off switch
Reset buttons for the
different modules
Operation and indications on the display (example with 7 modules)
Pressure
gauge
ima 5784
On/Off Switch
The on/off switch turns the mains power on/off within the
boiler. It does not isolate the boiler from the mains. Therefore
it is important that the boiler is isolated at the external mains
connection point before removing any casing panels.
Module and Reset Buttons
If a module locks out then its Reset Button becomes
illuminated. To reset the module you must hold down this
button whilst pressing the reset key.
Mode Key
The default mode of the boiler is standby. By pressing the
mode key it is possible to change the mode.
By pressing the mode key once, PARA mode (abbreviation for
parameter) is displayed. In this mode it is possible to change
the settings of the boiler control module. The first 3
parameters are accessible to all, and the remaining
parameters are accessible to an installer once he has
entered the service code.
By pressing the mode key again, DATA mode is displayed. In
this mode it is possible to read information on the operation of
the boiler.
The following modes are only for use by trained installers and
servicing engineers. Access is only available after entering the
service code.
By pressing the mode key again, TEST mode is displayed. In
this mode it is possible to run either the entire boiler or
individual burners at max. or min. rate.
By pressing the mode key again, HOUR mode is displayed. In
this mode it is possible to read the hours of each individual
burner.
If no key is pressed for 15 minutes the boiler automatically
returns to standby mode, unless operating in TEST mode.
Step Key
Having selected the mode required the step key is used to
move through the options available to be changed or checked.
+/- Key
By pressing the top or bottom of this key it is possible to
increase or decrease a value.
Store Key
After a setting has been changed, pressing the store button
holds this new value in the memory. This key is also used to
move through some options available as sub menus within
DATA mode.
Display Status
Boiler Status
0_xx
Standby: no heat request
1_xx
The fan of the burner to be ignited is running in prepurge
2_xx
The safety time of the burner to be ignited is operative
3_xx
Burner 'on' in CH mode
4_xx
Burner 'on' in DHW mode
5_xx
The fan of the burner to be ignited is being set to start speed.
6_xx
Burner 'off' in CH mode because a set value has been reached.
7_xx
Pump overrun in CH mode.
8_xx
Pump overrun in DHW mode.
9_xx
Burner 'off' in DHW mode because a set value has been reached.
INST
ALLA
TION
