As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW RECEIVED PITOT HEAT BASE AMBER MSG. THEY RAN THEIR QRH AND DECIDED TO RETURN TO DCA WHERE THEY LANDED WITHOUT INCIDENT. PERFORMED OPERATIONAL CHECK OF THE AIR DATA SENOR HEATER CONTROLLER IAW CRJ200 AMM 30-31-15-710-801 AND OPS CHECKS FOUND GOOD AT THIS TIME.