We have a water softener which was in the house when we bought it. I keep the salt topped up and recently someone told me about a little electronic water hardness tester which I bought on Amazon for £5. I get a reading of about 280~320 from our taps in the house for hot and cold. This is supposed to be Very Hard! Could the meter be faulty? It gets a reading immediately! Any suggestions please, Bramley.
Get a chemical hardness kit and do a proper test. If it still shows hard water, find out if the softened stuff goes to all the taps and test one you know it goes to. If you find the water still is hard does it bother you? if it does, get your softener serviced.
280 - 320 means nothing on it's own. I need to know the units it is measuring in. There are 2 main ways to measure water hardness, TDS and micro Mhos (total disolved solids and conductivity)
Where are you? I have worked as a water process chemist so if you tell me where you are I can tell you what hardness to expect.