What was found
"ZONE TEMP" LIGHT ILLUMINATED FIVE TIMES ON CLIMBOUT, TRIED RESET SWITCH HAD NO EFFECT. ACFT GROUNDED. CONTROL CAB ZONE TEMP LIGHT REMAINS ILLUMINATED WITH INTERMITTENT MASTER CAUTION AND AIR CONT ANNUNCIATIONS. DURING TROUBLESHOOTING, REMOVED & REINSTALLED BOTH ACAUS IAW AMM 21-51-02. REMOVED & REINSTALLED TEMP CONTROL PANEL (P6-17) IAW AMM 21-61-61. REPLACED AIR CONDITIONING MODULE. OPS CHECKED NORMAL IAW AMM 21-51-65. CONTROL CAB ZONE TEMP LIGHT REMAINS EXTINGUISHED.