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Rob, Home Appliance Technician
Category: Appliance
Satisfied Customers: 6991
Experience:  20 yrs. experience with a major worldwide manufacturer.
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optimax38c f12 code showing nothing working no hot water or

Customer Question

optimax38c f12 code showing nothing working no hot water or heating
Submitted: 4 years ago.
Category: Appliance
Expert:  Rob replied 4 years ago.
Welcome, my name is Rob and I will be helping you with your problem today. If anything isn't clear, please just ask me.

Is this the Ferroli?

what have you tried so far?

Customer: replied 4 years ago.

yes its a ferroli checked pressure 1.5 bar as system had drained low due to radiator leaking not sure if this is what caused problem i was told its a pcb fault and it needs resetting as its confused so am i

Expert:  Rob replied 4 years ago.

This error is normally associated witha software issue.

You should firts repair the leak and pressurise the system, if you havent already done so.
You should then reset the pcb.

To reprogram you press reset for ten seconds and TS appears.
Press reset for one second and P01 appears.
Press heating + and p02 appears.
Press hot water + and 0 codes appear.
Then press up or down on heating + or - to get o1 .
Then press reset for ten seconds.

If this does not reset it, you will have to get Ferroli to reprogram the software, but normally the above will do the trick

Can I ask you to take a moment and rate my response? Please use the smiley faces which you should now see. Please remember you are rating me personally, not the website or the problems you have had with this machine.
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Customer: replied 4 years ago.

came up with f37 code which says low pressure but pressure 1.5 bar then went back to f12

Expert:  Rob replied 4 years ago.
Is this after you reset it a above?

What should the pressure be?
Customer: replied 4 years ago.

yes tried twice now to says pressure between 1 and 1.5 bar

Expert:  Rob replied 4 years ago.


In that case it looks like you have a software issue that has a glitch and keeps on going to error.

I am sorry, but you will need a Ferroli engineer to re install the software for you.

Sorry there wasnt an easy reset on this one for you