Bosch ZWB28-3A - 10.2 Overview of the Service Functions; Default Chapter; First Service Level; Overview of the Service Functions

66 | Heatronic boiler control settings
Copyright (optional information)6 720 643 068 (2011/06)
10.2 Overview of the service functions
10.2.1 First service level (press and hold the service
button until it lights up)
10.2.2 Second service level (at first service level,
service button lights up, press ECO button and
key pad lock button simultaneously until e.g. 8.A
appears)
Service function
Display Page
1.A Maximum space heating output 67
1.b Maximum DHW output 67
1.E Pump mode for space heating operation 67
1.F Pump mode 67
2.A Heating circuit pump lockout time 68
2.b Maximum supply temperature 68
2.C Purging function 68
2.d Thermal disinfection 68
2.F Operating mode 68
3.A Automatic anti-cycle function 69
3.b Set anti-cycle time 69
3.C Switching differential (hysteresis) 69
3.d Minimum output (heating and DHW) 69
3.E Cycle time, keeping DHW hot 69
3.F Constant DHW period 70
4.b Maximum heat exchanger temperature 70
4.d Audible fault warning tone 70
4.E Appliance type 70
4.F Condensate trap filling sequence 70
5.A Reset inspection interval 70
5.b Fan post purge time 71
5.E Functionality of black plug in boiler
junction box
71
5.F Set inspection interval 71
6.A Display the latest fault code 71
6.b Room temperature control, current volt-
age, terminal 2
71
6.C Supply temperature required by outdoor
reset control
71
6.d Current DHW turbine flow rate 71
7.A Indicator lamp for burner operation /
faults
71
7.b 3-way valve in center position 72
7.d Connecting an external supply or low-
loss header temperature sensor
72
7.E Building drying function 72
0.A Do not use this setting! 72
0.d Altitude adjustment 72
0.E Metric or US customary units 73
Tab. 27 Service functions, 1st level
Service function
Display Page
8.A Software version 73
8.b Code plug number 73
8.C GFA Gas burner control status 73
8.d GFA Gas burner control fault 73
8.E Restore boiler to factory settings 73
8.F Permanent ignition 73
9.A Constant mode 73
9.b Current fan speed 73
9.C Current boiler output 73
9.d Set fan start speed 74
9.E Turbine signal delay 74
9.F Heating zone pump post purge 74
A.b Display DHW temperature 74
A.C Display DHW tank temperature 74
b.F Solar DHW backup heating delay 74
C.d Display current heat demand 74
Tab. 28 Service functions, 2nd level