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Sime?

Sime Format C. the orange light is on and manual says Central Heating Sensor. - What where, Why and How?
Peter, January 2010
I had same fault on this boiler and spoke to sime and the told me to change microswitch on water regulator. to test this take microswitch off and link the two wires together with a bit of wire if it works change the microswitch cost me £9.50

rowley, January 2010
link Click here to see other fixes for Sime.