Displays - Bosch ZSB 30-2 Installation And Servicing Instructions

64 | Displays

16 Displays
The display shows the following (table 25 and 26):
Value displayed Description
Number or letter, Service function
dot followed by ( table 15/ 16,
letter page 44)
Letter followed Fault code flashes
by number or (
letter
Two numbers Decimal figure, e.g.
flow temperature
U followed by Decimal figure;100..109
0..9 is displayed as U 0..U9
One number Decimal figure (three
(displayed for digits);
longer) followed first digit is shown
twice by two alternating with the
numbers two last digits (e.g.
(displayed 1...69..69 for 169)
briefly)
Two dashes Boiler coding card
followed by two number;
pairs of numbers
Value is shown in three
stages:
1. Two dashes
2. First two numbers
3. Last two numbers
(e.g.: -- ..10..04)
Two letters Version number;
followed by two
pairs of numbers Value is shown is three
stages:
1. First two letters
2. First two numbers
3. Last two numbers
(e.g.: CF 10 20)
Table 25 Displays
6 720 644 143 (2010/09)
Range
table 27, page 67)
00..99
0..109
0..999
1000
...
9999
Special
display Description
Acknowledge by pressing any key (except
reset).
Acknowledge by pressing two keys
simultaneously
Acknowledge by pressing
for more than 3 seconds (Save function).
The display alternately shows the flow
temperature and
operates for 15 minutes at the minimum
rated output.
The display shows the flow temperature
alternating with
with the set maximum rated output in
heating mode,
The display alternately shows the flow
temperature and
operates for 15 minutes at the maximum
rated output.
Ventilation function is enabled, see
service function 2.C.
The display shows the flow temperature
alternating with
program is enabled,
4.F.
The display shows the flow temperature
alternating with
interval has elapsed,
5.A.
The display alternately shows the flow
temperature and
pump is blocked.
The display shows the flow temperature
alternating with
gradient limiter is enabled. Excessive
flow temperature increase: heating mode
is suspended for two minutes.
Table 26 Special displays
and holding
. The appliance
. The appliance works
service function 1.A.
. The appliance
. The trap filling
service function
: the set inspection
service function
. The heating circuit
. The temperature