I purchased this water purifier with RO system and this was done by the door to door campaigning of those boys from the aqua guard company. I didnt have much time to decide on the quality and technical details , but heard of this company through ads so gave a try by purchasing the system. they were supposed to do 4 free services which they didnt do even after we called them. yeah I purchased this in march 2006. the only way I could get them back to my door step was by calling for a demo for new system , I closed the doors once they were inside and scared thier guts out of them. and made them deposit their demo kit with me and they had to collect it only after the service was done.
Try this trick if nothing works. risk involved caution. the spares are expensive. there was this another guy who suggested that an assembled kit is available to made to order. you get all these spares otherwise cheap he charges around 1000 extra for the job so you get a kit for 5000 or so. he seemed to genuine . why dont you all try that.