S-CB Px 120 Manual
99
Display message
C a s c a d e B l o c k
9 9 9 , 5 h r s
Reason
Connection failure with one of the boilers of the cascade.
Cause:
The unit is programmed in such a way that none of the boilers in a cascade will fire, if one
has a lock-out. One unit has a lock-out and therefore the whole cascade is blocked.
Corrective action:
Troubleshoot the fault of the unit in lock-out.
16.3.
Maintenance reminder function
The display shows alternating the base screen and this message, while backlight is blink-
ing.
The boiler is operating, but will count the exceeding hours.
A parameter must be changed, after service, to remove this message.
Display message
N e e d s M a i n t e n a n
0 . 0
I g n i t i o n c y c l e s h r s
Reason
Maintenance option of total amount of ignition cycles has been
reached.
Display message
N e e d s M a i n t e n a n
0 . 0
D a t e
h r s
Reason
Maintenance option of the date has been reached.
Display message
N e e d s M a i n t e n a n
0 . 0
B u r n i n g h o u r s
h r s
Reason
Maintenance option of total amount of burning hours has been
reached.
Display message
N e e d s M a i n t e n a n
0 . 0
A l l
h r s
Reason
One of all selected maintenance options has been reached.
This message function is standard not activated, but can be acti-
vated/set by a trained engineer. This function does not overrule
the need for annual maintenance. The end user is always respon-
sible for arranging annual maintenance.
Summary of Contents for S-CB Px 120
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Page 33: ...S CB Px 120 Manual 33 9 4 Electrical schematics ...
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Page 115: ...S CB Px 120 Manual 115 weather dependent control 49 73 ...
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