The child lock may be active
Some Hoover ovens have a child safety lock feature, depending on the specification. This is a safety lock to prevent children from switching on the oven and burning themselves when it gets hot. If this is active then the oven will not switch on and a lock symbol will be flashing. Please watch our informative video clip for more information including how to de activate the child lock:
Always disconnect your appliance from the mains before you start examining it!