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Symbols on the control panel mean?

My boiler is a Ferroli Optimax He 31C...
What do the symbols
'M', 'P'.
and the arrow on the right hand side of the control panel
mean.
Beth, February 2011
Look it up for yourself

http://www.ferroli.co.uk/product_documentation/Domestic/Optimax_HE_31_C_Manual.pdf

Carefree, February 2011
link Click here to see other fixes for Ferroli Optimax He 31C.