What was found
M/C RECALL, CONT CABIN ZONE TEMP LIGHT ILLUMINATES ON CRUISE. EXTINGUISHES ON RESET. ACFT GROUNDED. FOUND MASTER CAUTION RECALL WILL NOT WILL NOT RECALL ZONE TEMP. FAULT NO LONGER PRESENT. CLEANED ALL 3 CABIN TEMP SENSORS FILTERS IAW MM 21-61-06-100-801. ACCOMPLISHED PACK FLOW TEMP CONTROLLER BITE TEST LT CONTROLLER SHOWS NO FAULTS. RT CONTROLLER SHOWS FAULT CODE 21-51266 & 21-51267 RT TEMP CONTROL VALVE, 141 BOTH FAULTS FOR THIS VALVE. REF FIM 21-62, TASK 830 AND MM 21-61-00-740-801-002. REPLACED RT TEMP CONTROL VALVE REF MM 21-51-10. OPS CHECK GOOD.