Bosch Condens 7000 WP - Faults that Are Not Displayed

Troubleshooting
Condens 7000 WP – 6721842519 (2022/03)
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Table 22 Indicators and fault displays
11.1.3 Faults that are not displayed
2955 B Boiler does not support the parameters set
for the hydraulic configuration
Check hydraulic settings, change if necessary.
• Low-loss header
• Internal DHW circuit (cylinder charging circuit)
•Heating circuit 1
• Heating pump in appliance
2956 O Hydraulic configuration at the boiler
activated
–
2957 V Boiler electr. system fault 1. Reset control device / burner control unit.
2. Reconnect electrical connections at control device / burner control unit correctly.
3. Replace the control device/burner control unit.
2961
2962
V No fan signal available 1. Check fan and connecting lead.
2. Check mains voltage.
2963 B The heat exchanger sensor or both supply
and heat exchanger sensors are defect
1. Connect the plug to the temperature sensor correctly.
2. Connect the plug to the control device correctly.
3. Attach the temperature sensor correctly.
4. Check the temperature sensor, replace if necessary.
5. Check temperature sensor connecting lead, replace if necessary.
2964 Flow rate in heat exchanger too low –
2965 B Flow temperature too high 1. Ensure that the heating circulation is working correctly.
2. Check pump setting, adjust to match heating system if necessary.
3. Connect the plug to the temperature sensor correctly.
4. Connect the plug to the control device correctly.
5. Attach the temperature sensor correctly.
6. Check the temperature sensor, replace if necessary.
7. Check temperature sensor connecting lead, replace if necessary.
2966 B Flow temperature rise in heat exchanger too
rapid
1. Ensure that the heating circulation is working correctly.
2. Check pump setting, adjust to match heating system if necessary.
3. Connect the plug to the temperature sensor correctly.
4. Connect the plug to the control device correctly.
5. Attach the temperature sensor correctly.
6. Check the temperature sensor, replace if necessary.
7. Check temperature sensor connecting lead, replace if necessary.
2967 The temperature difference between supply
temperature sensor and temperature
sensor at heat exchanger is too large
–
2968 Refilling system pressure –
2970 Pressure drop in heating system too rapid –
2971 B System pressure too low 1. Vent the heating system.
2. Check the heating system for tightness.
3. Top up water until the target pressure is reached.
4. Check the pressure sensor, replace if necessary.
5. Check the pressure sensor cable, replace if necessary.
2972 Mains voltage too low 1. Establish supply voltage of at least 196 VAC.
2. Replace burner control unit.
3071 No communication with remote control 1. Check configuration.
2. Check cabling.
Device faults Remedy
Combustion noises too loud, rumbling noises ▶ Check the gas type.
▶ Check the gas supply pressure.
▶ Check the flue system, clean or repair as necessary.
▶ Check the gas/air ratio.
▶ Check the air/gas ratio control valve, replace if required.
Flow noises ▶ Set the pump rate or pump characteristic map correctly and match to the maximum
output.
Fault code Fault category
Fault text on the display, description Remedy