I have a Optima 700 boiler which the hot water has started running cold,boiler fires up ok and the C/H workers perfect but the DHW is only luke warm. I have checked the hot water thermister when cold and it reads 980 ohms.Any other checks I can do.
I have a Optima 700 boiler which the hot water has started running cold,boiler fires up ok and the C/H workers perfect but the DHW is only luke warm. I have checked the hot water thermister when cold and it reads 980 ohms.Any other checks I can do.
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