Specifications

38 | Maintenance and service
830 ES6 720 644 936 (2013/01)
Fig. 65 Adjusting P1 CO
2
level
Fig. 66 Adjusting P2 CO
2
level
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.
7.6 Control board diagnostics
1. Press ON/OFF button into ON.
2. Press and hold simultaneously buttons or and for 3
seconds, until display reads P2.
3. Press to enter P2 adjustment. The current setting will appear on
the display. If not, repeat process.
4. Press and release the button on the control panel until the
display reads 'P4'. You are now in the diagnostic mode of the control
board.
5. When the display reads 'P4', press and release the button once
again and the display should read 'E'.
6. Use the and button on the control board to cycle through
different diagnostic modes available.
CAUTION: Appliance malfunction!
▶ Misadjusted program values can lead to appliance
malfunction, errors, and service calls.
Program Description Factory Default MIN MAX Comment
P1 Maximum Power NG: 48,
LP: 40
21 NG: 49,
LP: 41
see chapter 4.14, page 31
note: reducing P1 values below maximum will
reduce maximum power of the appliance.
P2 Minimum Power 7720 see chapter 4.3.8, page 21
P3 Remote
Controls installed
_0 _0 6 see chapter 6.5, page 34
P4 Access to
Diagnostic Mode
E0d10f see chapter 7.6, page 38
P5 Cascade Mode NO NO CC contact Bosch for details
P6 Temperature Unit °F °F °C
P7 Gas type selection LP or NG Preset from factory.
Contact Bosch for details.
P9 Fan Purge Runs secondary fan and primary fan when P9 is
selected by depressing the “P” - button
PH Cascading type IC IC SC This menu is only available when cascade mode is
selected CC.
Contact Bosch Water Heating for details.
PC Primary/Secondary
mode
CS CS Cn
Table 36 Program values, factory default settings and ranges.
+
P
P
P
+
+