As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT SIDE WINDOW HEAT LIGHT ILLUMINATED ON SHORT FINAL. QRH CHECKLIST COMPLETED WHILE BETWEEN RUNWAYS. GROUNDED - YES. PERFORMED LEFT SIDE WINDOW HEAT SYSTEM OPS CHECK PER B737-800 AMM TASK 30-41-00-710-801, SYSTEM TEST GOOD. PERFORMED WHCU BITE TEST, NO FAULTS NOTED. HISTORY SHOWS SECOND PILOT WRITE-UP. REMOVED AND REPLACED WINDOW HEAT CONTROL UNIT PRECAUTIONARY PER AMM 30-41-11 PG 401, SYSTEM TEST GOOD.