An engineer replaced the diverter valve on our TURBO max yesterday. Since he left it will not maintain pressure between 1 - 1.5 bar, it now reads zero.
at a guess he released the pressure through the pressure relief valve. this is not recommended as most often they do not reseal.
check outside to see if the small pipe is running water when you top your boiler up.
If it is get him back to rectify the fault he has caused through being lazy.
gary.wright53@googlemail.com
March 2008
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