Program Values; Control Board Diagnostics - Bosch 830 ES Manual

38 | Maintenance and service
Fig. 65 Adjusting P1 CO level
2
Program Description
P1 Maximum Power
P2 Minimum Power
P3 Remote
Controls installed
P4 Access to
Diagnostic Mode
P5 Cascade Mode
P6 Temperature Unit
P7 Gas type selection
P9 Fan Purge
PH Cascading type
PC Primary/Secondary
mode
Table 36 Program values, factory default settings and ranges.
7.6

Control board diagnostics

1. Press ON/OFF button into ON.
2. Press and hold simultaneously buttons
seconds, until display reads P2.
3. Press to enter P2 adjustment. The current setting will appear on
P
the display. If not, repeat process.
6 720 644 936 (2013/01)
Factory Default MIN
NG: 48, 21
LP: 40
7 7
_0 _0
E 0d
NO NO
°F °F
LP or NG
IC IC
CS CS
+
or and for 3
P
Fig. 66 Adjusting P2 CO level
2
7.5

Program values

This section describes details on programming the appliance. For most
applications the factory default values will provide robust and stable
operation. Only adjust the factory settings if the installation requires
changes as indicated in the appropriate section of this manual.
Refer to chapter 7.6 Control board diagnostics (page 38) regarding how
to access these P-modes.
CAUTION: Appliance malfunction!
▶ Misadjusted program values can lead to appliance
malfunction, errors, and service calls.
MAX Comment
NG: 49, see chapter 4.14, page 31
LP: 41 note: reducing P1 values below maximum will
reduce maximum power of the appliance.
20 see chapter 4.3.8, page 21
6 see chapter 6.5, page 34
10f see chapter 7.6, page 38
CC contact Bosch for details
°C
Preset from factory.
Contact Bosch for details.
Runs secondary fan and primary fan when P9 is
selected by depressing the "P" - button
SC This menu is only available when cascade mode is
selected CC.
Contact Bosch Water Heating for details.
Cn
4. Press and release the button on the control panel until the
P
display reads 'P4'. You are now in the diagnostic mode of the control
board.
5. When the display reads 'P4', press and release the
again and the display should read 'E'.
+
6. Use the and button on the control board to cycle through
different diagnostic modes available.
+
button once
830 ES