12.5 SERVICE FUNCTION
The following figure describes how to use the service function.
FIGURE 12.6 SERVICE MODE
TABLE 12.1 MAXIMUM COMBUSTION FAN SPEED
* The maximum rpm that the controller is to use as a set point.
** The maximum rpm that the fan is actual able to run.
The maximum actual rpm can be lower than the maximum rpm set point. This is because the fan is not able to
reach the maximum rpm set point, due to the unit’s resistance. The tolerance varies according to the design of
each specific unit. The relation between the maximum rpm set point and the maximum actual rpm is given in this
table. This table applies also to the service and “Schornsteinfeger” function of the boiler.
Operating screen:
H E A T I N G : S T A N D - B Y
> > > : 1 2 3 . 4
o
C ( 1 2 3 . 4
o
C )
Press [SERVICE] and hold for 3 seconds.
The burner will start and show the display below.
Operating screen:
H E A T I N G : S e r v i c e 2 6 %
> > > 9 0 . 0
o
C ( 6 0 . 0
o
C )
"HEATING": The appliance is operating as a heating boiler.
"Service": It is operating in the service mode.
"26% ": The burner is firing at 26% .
"90,0
o
C": Max. allowable water temp. during service.
"60,0
o
C": Actual measured water temp. (when P5BJ active).
Press [MENU] to return to the service menu.
Use [◄] & [►] buttons to browse through the monitor screens.
Press [MENU] to go to the operation menu or the service mode.
The unit will return to the standard operation display.
Press [SERVICE] to exit. The unit will go to the operating screen. Or
Press [ON/OFF] for 3 seconds to exit. The unit will be switched off.
Press [MENU] to access the main menu.
By using the [▲] & [▼] buttons the burner firing rate % can be changed.
Press [SERVICE] to exit the service mode.
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