Root Cause Analysis of Water Wastage in Hot - Cold Water Dispenser

Hot - Cold Water Dispenser is a high end kitchen product mounted on sink of kitchen to meet the requirement of instant hot and cold water as desired. It provides cold water at ambient temperature and hot water at near boiling temperature of about 97oC to meet the instant water need. It was reported from few users, small amount of unnecessary water get dispensed from the Hot - Cold Water Dispenser during the idle conditions. This is undesirable and affecting on the overall performance of product. This paper briefs the available Root Cause Analysis and process to select the suitable method to find out the root cause of problem. From the available methods, Fault Tree Analysis was found to be most suitable method. The paper describes this method in length. Fault Tree Analysis is used as the scientific approach to find the root cause of problem of water dripping in Hot - Cold Water Dispenser at idle condition. It makes use of a graphical representation of the major faults associated with the product, the causes for the faults, and potential countermeasures. It is found that the FTA tool helps to identify areas of concern for new product design as well as for improvement of existing products.