18Inspections and maintenancePre-season Inspections Are the air outlet vents and the airintake ventsblocked?Please remove those blockages to ensure normaloperations of the unit. Are the remote control batteries weak?Please change them as soon as the signal transmittingrange becomes shorter. (Page 9) Is the tip of the drain hose blocked bydirt and grime?If blocked, drainage of indoor condensate to the outdoordrainage system will not be possible.Indoor unit • Remote control Wipe with a dry soft cloth. (If using synthetic dustcloth, please follow theirproduct instructions) In the case where stubborn dirt is present, apply some mild kitchen detergent(neutral type) and rub them out with a cloth and wipe with a dry cloth. Avoid using hot water (40°C and above), thinner, other volatile substances,polishes and etc.Indoor unit (Internal section)Please engage your dealer to do the air conditioner cleaning service.Servicing the unit by yourself may cause faulty operations and water leakage.Preparation for inspection Due to the air conditioner are being used throughout many seasons, there will definitely beaccumulation of dust and dirt and reduction of performance. Depending on your operating conditions, it will be common to see odour permeating, accumulationof dust and dirt, causing those foul smelling drained condensate and waste water from the odourwash.It is recommended to engage our qualified technicians to do the repairs and inspections.Please consult your dealer in regards to the costs of engaging them.