www.fixya.com/support/t2535668-bought_older_unit_viking_ultra_line
Jul 7, 2009 - Question about Viking Range Hoods ... There is a set screw holding thesquirrel cage fan in place which I unscrewed .... Are the squirrel cage rotors fastenedwith a conventional thread direction or are they reversed threads?
call a gas fitter as you have a problem with the jets/ supply that is creating a dangerous situation leaving unburnt gas ( you can smell ti) that could cause an explosion
There is a sensor that detects the oven temperature, it must be defective and sending a signal that oven is at set temperature and this shuts off the gas valve.