After replacing blown fuse and oven lamp on Cannon 10550G Westminster free standing cooker, get flashing 0.00 and AUTO on display (normal after elec supply disconnected). When start to set clock time, get constant ignition clicking that only stops when turn oven gas knob to on - oven lights and then indicates running in AUTO. Unable to operate oven in manual mode. (burners and grill operate OK). Any help appreciated! Thank you.