Webasto Control Box Tester - WPX-440-280
Webasto Bypass Box. This Bypass Box allows The Technician to manually operate the Webasto motor which allows the the fuel system to purge the air from the replaced fuel filter to the webasto head. If you have a fuel pressure gauge (WPE-600-190) will allow the ability to test fuel pressure with the fuel valve button. another feature allows you to test coil/spark. Last feature is the ability to test run a installed head.. turn on the motor.. then hold Ign button.. then Fuel.. Burner lights.. then you can hold the fuel valve button to verify burner component operation.