Ok so following on from the repair of my unit B&Q chinese special I have made the following observations. The system is rated at 9000 btu, room is 12 sqm and is south facing with one external wall. Last night the starting temp was 28c, set temp 22c. Humidity started at 48 and this morning was 68. Fan speed was set to auto. Room feels very very comfortable , i my mind it seems to cool the room very quickly (so maybe thats the issue). This morning room temp was 22c (expected) but humidity was 68. Obviously this unit has no dehumidifier properties is a very simple unit so perhaps thats the issue with buying cheap. Will try again with fan speed on low. Anyone got any observations, could it be a low charge level or is this just par for the course. The temp is being dropped so any moisture holding ability of the air will be less so if humidity not being controlled then the moisture carrying capabilities of the air in the room will be less not that the actual room has more moisture. Are these thoughts valid?