As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON THE SCHEDULED AIRFOIL DEICER SYSTEM INSPECTION, IT WAS DISCOVERED THAT THE NORMAL INFLATION SEQUENCE WOULD WORK PROPERLY ONLY 1 TIME OUT OF THREE. IT WAS DETERMINED THAT THE TIMER WAS FUNCTIONING IN AN INTERMITTENT MANNER. DEICER CAUTION LIGHT WOULD COME ON INDICATING SEQUENCE MALFUNCTION. THE TIMER WAS REPLACED WITH A SERVICEABLE UNIT.