As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB-OUT FROM MSN, AIRFOIL ICE PROTECTION PRESSURE ABNORMAL LIGHT ILLUMINATED. PERFORMED PRECAUTIONARY OPERATING PROCEDURES AND DETERMINED LOSS OF WING AND TAIL ICE PROTECTION. FLIGHT DIVERTED TO MSP, AND LANDED WITHOUT INCIDENT. REPLACED ICE PROTECTION REGULATOR VALVE. OPERATIONAL CHECK OK. AIRCRAFT RETURNED TO SERVICE.