Viessmann 7134328 Circuit Board
The Viessmann 7134328 is a critical VR20 control board specifically engineered for Vitodens 200 WB2 and WB2A series gas condensing boilers. Functioning as a high-precision communication interface, this replacement circuit board facilitates data transfer between the LGM 29 burner control unit and the main system sensors. It is essential for managing boiler fault codes such as A1, A4, and outdoor temperature sensor malfunctions. Field replacement requires the extraction of the VR20 module using the integrated handle from the control console. Before installation, contractors must document specific coding addresses—including 000, 0B8, 042, 045, and 0A2—to ensure the HVAC control electronics maintain original system parameters. This OEM Viessmann part ensures reliable combustion regulation, safety limit monitoring, and pump modulation across residential hydronic heating systems ranging from 6-24C to 15-60 kW capacities.
Key Benefits:- Direct Compatibility: Engineered for seamless integration with Vitodens 200 WB2 and WB2A boiler platforms.
- Precise Troubleshooting: Critical for resolving KM-BUS communication faults and recurring system lockout issues.
- Advanced Microprocessor Control: Optimizes burner ignition cycles and pump operation for peak efficiency.
- Ease of Integration: Features a plug-and-play modular design for fast swapping within the existing control rail.
- How do I resolve a Fault A4 code on a Vitodens 200? Fault A4 typically indicates a KM-BUS communication issue; if wiring and pump settings (address 0B8) are correct, replacing the VR20 circuit board is the standard corrective action.
- Is this board compatible with both WB2 and WB2A models? Yes, the 7134328 VR20 is the specific module designated for the entire WB2/WB2A series residential gas condensing lineup.
- Do I need to reprogram the boiler after installing the VR20? You must verify and manually input the 16-digit serial-specific coding addresses and heating curves into the new board to ensure proper system performance.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $505.45
-65%$505.45
$176.91Viessmann 7134328 Circuit Board
The Viessmann 7134328 is a critical VR20 control board specifically engineered for Vitodens 200 WB2 and WB2A series gas condensing boilers. Functioning as a high-precision communication interface, this replacement circuit board facilitates data transfer between the LGM 29 burner control unit and the main system sensors. It is essential for managing boiler fault codes such as A1, A4, and outdoor temperature sensor malfunctions. Field replacement requires the extraction of the VR20 module using the integrated handle from the control console. Before installation, contractors must document specific coding addresses—including 000, 0B8, 042, 045, and 0A2—to ensure the HVAC control electronics maintain original system parameters. This OEM Viessmann part ensures reliable combustion regulation, safety limit monitoring, and pump modulation across residential hydronic heating systems ranging from 6-24C to 15-60 kW capacities.
Key Benefits:- Direct Compatibility: Engineered for seamless integration with Vitodens 200 WB2 and WB2A boiler platforms.
- Precise Troubleshooting: Critical for resolving KM-BUS communication faults and recurring system lockout issues.
- Advanced Microprocessor Control: Optimizes burner ignition cycles and pump operation for peak efficiency.
- Ease of Integration: Features a plug-and-play modular design for fast swapping within the existing control rail.
- How do I resolve a Fault A4 code on a Vitodens 200? Fault A4 typically indicates a KM-BUS communication issue; if wiring and pump settings (address 0B8) are correct, replacing the VR20 circuit board is the standard corrective action.
- Is this board compatible with both WB2 and WB2A models? Yes, the 7134328 VR20 is the specific module designated for the entire WB2/WB2A series residential gas condensing lineup.
- Do I need to reprogram the boiler after installing the VR20? You must verify and manually input the 16-digit serial-specific coding addresses and heating curves into the new board to ensure proper system performance.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Viessmann 7134328 is a critical VR20 control board specifically engineered for Vitodens 200 WB2 and WB2A series gas condensing boilers. Functioning as a high-precision communication interface, this replacement circuit board facilitates data transfer between the LGM 29 burner control unit and the main system sensors. It is essential for managing boiler fault codes such as A1, A4, and outdoor temperature sensor malfunctions. Field replacement requires the extraction of the VR20 module using the integrated handle from the control console. Before installation, contractors must document specific coding addresses—including 000, 0B8, 042, 045, and 0A2—to ensure the HVAC control electronics maintain original system parameters. This OEM Viessmann part ensures reliable combustion regulation, safety limit monitoring, and pump modulation across residential hydronic heating systems ranging from 6-24C to 15-60 kW capacities.
Key Benefits:- Direct Compatibility: Engineered for seamless integration with Vitodens 200 WB2 and WB2A boiler platforms.
- Precise Troubleshooting: Critical for resolving KM-BUS communication faults and recurring system lockout issues.
- Advanced Microprocessor Control: Optimizes burner ignition cycles and pump operation for peak efficiency.
- Ease of Integration: Features a plug-and-play modular design for fast swapping within the existing control rail.
- How do I resolve a Fault A4 code on a Vitodens 200? Fault A4 typically indicates a KM-BUS communication issue; if wiring and pump settings (address 0B8) are correct, replacing the VR20 circuit board is the standard corrective action.
- Is this board compatible with both WB2 and WB2A models? Yes, the 7134328 VR20 is the specific module designated for the entire WB2/WB2A series residential gas condensing lineup.
- Do I need to reprogram the boiler after installing the VR20? You must verify and manually input the 16-digit serial-specific coding addresses and heating curves into the new board to ensure proper system performance.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
