As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING T/O THE AMBER MESSAGE P/S RAT HEAT OFF ILLUMINATED WITH THE P/S HEAT SWITCHES IN THE ON POSITION. AFTER BRINGING THE THROTTLES TO IDLE THE CAS MESSAGE TURNED CYAN WITH THE P/S SWITCHES STILL IN THE ON POSITION. REMOVED AND REPLACED RELAY KCOO4 AND P/S SWITCH CESSNA 750MM 30-30-01, PERFORMED OPS CHECKS IAW CESSNA 750MM30-32-00 PILOT/ STATIC HEAT CHECKS SERVICEABLE.