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Mend Ferroli Otimax HE38C Boiler Central Heating Fault Code

Ferroli Otimax HE38C?

Boiler has hot water, will fire up on Eco, it has everything calling for central heating and shows no fault code.

Is it possible for the mechanical diverting valve to stick on hot water? If so how do confirm this is the problem?

Do I need to buy the complete diverting valve including the actuator if it is at fault?

Any suggestions would be much appreciated.

Mark
December 2011
FerroliFerroli Otimax HE38CHeating, Home Heating SystemsBoiler Central Heating Fault Code
Yes they can stick, take cover off, you will be able to see valve, some have an actuator on one side going to micro switch, watch it does it move when hw called for, does it move back? If not stuck, possible to get overhaul kits for most makes, look on Ebay, But would depend on why it is not moving, Listen to it, can you hear some motor move.
If no switch on side, listen for it moving, usually hear it, switching water on/off Also check your pressure, should be about 1 bar cold.

SD
December 2011

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Ferroli Otimax HE38C: Diverting Valve Issue