As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ALL COCKPIT WINDOWS FOGGED BELOW 3000 FEET. WINDOW HEAT SWITCHES WERE ON AND NO FAULT LIGHTS. GROUNDED - YES. PERFORMED B737-9 IFIM 21-51-00-810-878. REF B737-9 AMM 21-51-16 FOR WATER SPRAY NOZZLE CHECK #1 (L/H) PACK. NO DEFECTS FOUND. REMOVED AND REPLACED #1 (L/H) FWD WATER EXTRACTOR REF. AMM 21-51-14. LEAK CHECK GOOD. OPERATED PACKS IN ALL POSITIONS NO FOGGING.