PA020035 Viking DSI Module is a sub for PA020027. ALL SALES ON ELECTRIC AND ELECTRONIC PARTS ARE FINAL. SVGIC305 DSI SVGIC305DSI VGIC305DSI. VGSC366 VGSC367 VGSC486 VGSC487-4G. VGSC487-4Q VGSC487-6G VGSC487-6Q VGSO100. If your unit is not listed here. Or if you need help to determine if this is the part you need. Please send us a message. This spare part is required to be assembled and installed by instructing specialized personnel only (electrician/technician). The proper function and safety of the part can be affected by the improper installation. We are not liable for damages caused by the improper installation of a third party. Specific requirements and regulations must be observed. In case of doubt, please contact our customer service. All items are not returnable once installed.