What was found
CONTROL CABIN TEMP SELECTOR ADJUSTED TO NEAR FULL WARM POSITION, ABLE TO INCREASE/DECREASE TEMP ON SUPPLY DUCT GAUGE BUT FLIGHT DECK CONTINUES TO BE VERY COLD. GROUNDED - YES. REMOVED & REPLACED FLIGHT DECK TCV (V143) PER B737-800 AMM 21-61-21, LK CK & OPS CK NML. PULLED & RESET 1 TOTAL C/B. ALSO, REMOVED & REPLACED TEMPERATURE CONTROL MODULE (P5-17) AS PRECAUTIONARY REF AMM 21-61-15. PULLED & RESET 4 TOTAL C/BS. ACCOMPLISHED PACK/ZONE TEMP CONTROLLER (R/H) BITE TEST REF AMM 21-61-00-700-806-002, GROUND VERIFICATION CK NML. VERIFIED CORRECT PARTS EFFECTIVITY REF IPC 21-61-07-03 & IPC 21-61-21-02.