What was found
RED CABIN ALTITUDE WARNING, PERFORMED DESCENT TO 10,000 FT ON CABIN PRESSURE SYS PAGE, BOTH OUTFLOW VALVES SHOW AMBER & FULL OPEN - NO ECAM MESSAGE, CABIN ALTITUDE 10,000 FT. UNABLE TO CONTROL CABIN ALTITUDE . PACK VALVES SHOW AMBER AND CLOSED INTERMITTENTLY ON AIR BLEED SYS PAGE - NO ECAM MESSAGE. VISUALLY INSPECTED IGNITION CONTROL SWITCH CONDITIONS FOUND SATISFACTORY. CLEANED THE SWITCH ASSY, R & R RELAY 215HB & 61GB ASSY IAW SWMP. CARRIED OUT ECAM, INPUT BITE TEST FOUND ALL NORMAL. OPS CHECKED OUTFLOW VALVE IN MANUAL MODE IAW AMM 21-31-00-5 FOUND SATISFACTORY. PERFORMED EN NR 1 & NR 2 ENGINE GROUND RUNS IAW JRH, CHECKED A/C PACKS AND OUTFLOW VALVES ALL WORKS NORMAL. ACFT OK FOR SERVICE.