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Plumberpro
Plumberpro, Home Appliance Technician
Category: Appliance
Satisfied Customers: 634
Experience:  Heating and hot water heating appliances experienced
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Ferroli he38cplus dhw temp cycles up and down;- have changed ch & dhw thermisters,

Customer Question

Hi ferroli he38cplus dhw temp cycles up and down;- have changed ch & dhw thermisters, plate heat exch, flow switch and just after fitted the circuit board the system is supplied via a water softener Heating system works fine. cheers
Paul
Submitted: 1 year ago.
Category: Appliance
Expert:  Plumberpro replied 1 year ago.
Hi , are you sure the water softener isn't holding back the flow rate, do you know the Max flow rate through the softener?
Might be worth connecting a hose from kitchen tap or garden hose and cutting in the mains cold in to see if it works fine that way ,or use softener bypass, to verify its not the softener.