Bosch Control 8313 User Manual (English)

Other manuals for Bosch Control 8313

Operating Instructions32 pages

Service Instructions For Contractors56 pages

Questions and Answers:

A
Andres WillisSep 5, 2025
How to troubleshoot external fault input on heating circuit pump with Bosch Control 8313?
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  Vicki RogersSep 5, 2025
  If there's an external fault input on the heating circuit pump with your Bosch Control Unit, it could be because the error input WF1/2 of the FM-MM module has been opened; check the function of the externally connected heating circuit pump. The externally connected heating circuit pump might also be faulty or malfunctioning. If necessary, replace the module.
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Renee SmithAug 25, 2025
How to fix a dark display on my Bosch Control Unit?
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  Christian HensonAug 25, 2025
  If the display on your Bosch Control Unit is dark, it could be due to several reasons: the heating system emergency stop switch might be off (switch it on), the control unit itself might be switched off (switch it on), the control unit safety equipment may have been triggered (push in the pin), or a safety device has been triggered (check the circuit breaker).
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Joe RamirezAug 25, 2025
What to do if DHW remains cold with Bosch Control Unit?
- S
  Scott RodriguezAug 26, 2025
  If the DHW (Domestic Hot Water) remains cold when using your Bosch Control Unit, there might be a few potential causes. The cylinder primary pump could be faulty, so check if the function is set to Auto. Alternatively, the FM-MW module might be defective; in this case, check the function of the temperature sensor and the primary pump. It's also possible that more DHW is being used than heated; if this is the case, consider replacing the module or control unit.
P
pamela94Aug 27, 2025
Why is the flue gas temperature too high on my Bosch Control 8313 Control Unit?
- T
  Travis HaleAug 27, 2025
  A high flue gas temperature in your Bosch Control Unit can be caused by a soiled heat source (clean the heat source) or a faulty flue gas temperature sensor (check sensor connection and function).
K
Kyle ClarkAug 27, 2025
What to do if thermal disinfection failed on Bosch Control Unit?
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  lindaweissAug 27, 2025
  If thermal disinfection fails on your Bosch Control Unit, it could be due to several reasons. The heat source output might be insufficient because other heat consumers are demanding heat during disinfection. Try selecting a time for thermal disinfection that doesn't overlap with additional heat requirements. Also, check the function of the temperature sensor and the primary pump, as the temperature sensor or the cylinder primary pump could be incorrectly connected or faulty. In such cases, you may need to replace the temperature sensor and primary pump. The FM-MW module or the control unit itself could be faulty, potentially requiring replacement. Finally, consider if the draw-off rate during thermal disinfection is too high.
B
boydcoleAug 28, 2025
How to fix a defective outdoor temperature sensor on a Bosch Control 8313?
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  Carrie MercerAug 28, 2025
  If the outdoor temperature sensor on your Bosch Control Unit is defective, it might be incorrectly connected, not connected at all, or actually defective. Begin by checking whether the outside temperature sensor is connected to the correct control unit (specifically, the control unit with address 0 in systems with multiple heat sources). Also, check the communication with the control units. If problems persist, consider replacing the outside temperature sensor or the central module.
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Pamela JacobsSep 9, 2025
How to correct a wrong connection position for EMS SI chain on a Bosch Control 8313 Control Unit?
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  michaelphillipsSep 10, 2025
  If you encounter a 'Wrong conn. pos. for EMS SI chain' error on your Bosch Control Unit, it indicates an incorrect connection of safety equipment. Connect the safety equipment to the EMS heat source. It might also be due to an incorrect boiler type selected, so check the boiler type setting.
K
Krista RodriguezSep 6, 2025
What to do if Bosch Control 8313 shows module not supported?
- C
  Charles VillanuevaSep 6, 2025
  If your Bosch Control Unit displays 'Module not supported', it means that the inserted module is either faulty or the software version is outdated. You should replace the module.
J
John MendozaSep 4, 2025
What should I do if the SI 1 Safety Device is triggered on my Bosch Control 8313 Control Unit?
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  Russell HooperSep 4, 2025
  If the SI 1 Safety Device is triggered on your Bosch Control Unit, it indicates that the safety equipment in the safety chain has responded, so check the safety equipment. It could also mean that the high limit safety cut-out has responded; find the cause of this trigger, and check the control unit functions. The control unit itself might be faulty, so remedy the cause.
D
Dominic RichardsSep 1, 2025
What causes a defective heat source return temperature sensor in Bosch Control 8313 Control Unit?
- E
  Erin CowanSep 2, 2025
  A defective heat source return temperature sensor in your Bosch Control Unit can be caused by the temperature sensor being incorrectly connected or faulty, so check the sensor port. It could also be due to a faulty ZM5313 central module or the control unit itself. If this is the case, replace the boiler water temperature sensor or central module.