11.3.2 Second Service Level - Bosch KBR16-3 Installation And Service Instructions Manual

60 | Heatronic boiler control settings
If U0 appears on the display, the function was already set
via the FW200 control.
Service function 6.A: Display the latest fault code
Use this service function to display the most recent fault code.
Service function 6.b: Room temperature control, current voltage,
terminal 2
The current voltage of the analog control at terminal 2 is displayed.
Possible displays are:
• 00 - 24: 0 V to 24 V in increments of 1 V
Service function 6.C: Supply temperature required by weather
compensation control
This service function allows displaying the current target supply
temperature set by the weather compensation control.
Service function 6.d: Current DHW turbine flow rate (only combi
boiler KWB..-3A)
NOTICE: System damage or boiler malfunction!
▶ Never change the setting of this service function on
heating boiler KBR..-3A appliances.
The current flow rate of the DHW turbine is displayed.
Service function 0.E is set to 00 (metric units):
• 0.0. - 99.9.: 0.0 to 99 l/min in increments of 0.1 l/min
Service function 0.E is set to 01 (US-customary units):
• 0.0. - 99.9.: 0.0 to 99 gpm in increments of 0.1 gpm
Service function 7.A: Indicator lamp for burner operation / faults
With this service function you can activate and deactivate the indicator
lamp for burner operation (continuously illuminated) and faults
(flashing).
The following settings are possible:
• 00: Off
• 01: On (burner operation) and flashing (fault present)
Default setting is 00.
Service function 7.b: 3-way valve in center position
After the value 01 has been saved, the 3-way valve moves to the center
position. This allows draining the system completely and removing the
motor easily.
When you exit this service function, the appliance returns to setting 00.
Service function 7.d: Connecting an external supply or low-loss
header temperature sensor
Presence of an external supply or low loss header temperature sensor is
automatically detected by default; you do not need to change any
settings.
If a sensor is disconnected, change the setting back to
the default setting 00.
The following settings are available:
• 00: Once-only automatic detection of a sensor
• 01: External supply temperature sensor connected to Heatronic.
• 02: External supply temperature sensor connected to IPM2.
Default setting is 00.
6 720 810 590 (2015/05)
Service function 7.E: Building drying function
This service function allows you to start and stop the building drying
function.
Never confuse the appliance building drying function
with the slab drying function of the outdoor reset control
FW200.
When the building drying function is on, you cannot
adjust the appliance gas settings.
The following settings are available:
• 00: Off
• 01: Heating operation only in accordance with the appliance or
control setting, i.e. all other heat demands are blocked.
Default setting is 00.
Service function 0.A: Do not use this setting!
Default setting is 00 (disabled).
Service function 0.d: Altitude adjustment
Input and output rates are reduced at higher altitudes due to thin air with
reduced oxygen levels.
KBR42-3A... and KWB42-3A... appliances are derated at 3 % per
1000 feet (305 m).
KBR16-3A..., KBR21-3A..., KBR28-3A..., KBR35-3A..., KWB28-3A...
and KWB35-3A... appliances offer altitude adjustment which
compensates for the effects of thin air, and are therefore NOT derated
up to 6000 feet (1829 m). Above 6000 feet (1829 m) a rate of 3 % per
1000 feet (305 m) applies.
This service function is used to adjust the fan speed for high altitude
operation.
The following settings are available:
• 00: Normal
• 01: Medium
• 02: High
Setting
00
01 2,001 ft – 4,500 ft (611 m – 1 372 m)
02
Table 21 Altitude adjustment (service function 0.d)
Default setting is 00.
Service function 0.E: Metric or US customary units
With this service function you can set if Metric or US customary units are
displayed on the boiler.
The following settings are available:
• 00: °C, l/min (metric units)
• 01: °F, gpm (US-customary units)
Default setting is 01.

11.3.2 Second service level

Service function 8.A: Software version
The current software version is displayed.
Elevation above sea level
0 ft – 2,000 ft (0 m – 610 m)
above 4,500 ft (1 372 m)
Greenstar FS