Unattended spot cleaning with surface sanitization

An extraction cleaning machine, comprising:

• a housing with a bottom portion that is adapted to rest on a surface to be cleaned and that defines an opening in an underside of the housing;
• a fluid delivery system provided with the housing and including a fluid distributor configured for delivering a cleaning fluid to the surface to be cleaned beneath the opening in the underside of the housing;
• a fluid extraction system including a suction nozzle configured for recovering soiled cleaning fluid from the surface to be cleaned beneath the opening in the underside of the housing;
• a carriage assembly mounting an agitation assembly to the housing for movement with respect thereto and with respect to the surface to be cleaned;
• a steam delivery system including a steam generator, the steam delivery system configured for supplying steam or heated liquid to the surface to be cleaned;
• at least one ultraviolet light emitting element provided with the housing and configured to emit ultraviolet light onto the surface to be cleaned;
• and
• a controller programmed with a timed duty cycle and operatively coupled to the steam generator to selectively control the steam generator in accordance with the timed duty cycle to generate the steam or heated liquid that is supplied to the surface to be cleaned within the timed duty cycle.