Pax feedback to staff (OTP) of air-con condensate at rear M1 car. Staff (QUE) checked and confirmed no air-con condensate was present. ~~~~~ CHECK AC TEMPERATURE SETTING CUT IN/OUT WITHIN CRITERIA.FURTHER CHECK REMOVE CEILING PANEL FOUND CONDENSATION ON METAL FRAME.INSULATE DONE OK.CLEAN CEILING PANEL AND PURGING DRAIN PAN DONE.MONITOR FOR AN HOUR DONE OK.TO BE MONITORED DURING MAINLINE REVENCE.FARHAN/HAIRUL/SHAHRIE  14.09.2022