As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH ALL ANTI ICE SELECTED ON AND N1 APPROX 75%. AMBER WING ANTI-ICE COLD R ICAS MESSAGE DISPLAYED. THE LEFT WING WAS CLEAN AND THE RIGHT WING WAS ACCUMULATING ICE. AFTER SEVERAL MINUTES OF HIGH POWER SETTING, THE MESSAGE EXTINGUISHED AND ICE MELTED. REPLACED PRESSURE REGULATING SHUT OFF VALVE. OPS CHECK GOOD. IAW CE680 AMM 30-10-00