As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA- ON FLIGHT 2330 DEICE PRESSURE CAUTION LIGHT. PERFORMED EMERGENCY CHECKLIST. FOUND RIGHT OUTBOARD WING BOOT SLOW TO INFLATE WITH LOWER PRESSURE THAN LEFT SIDE. REMOVED AND REPLACED DUAL DISTRIBUTION VALVE. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.