F3 Code - Jaguar Combi

D

DAJ

I've got a constant F3 code on a 28k Jaguar Combi!

Heat exchanger absolutely clean as a whistle, pump operating fine - signs of slight weeping from the flow sensor, so I replaced that thinking it was the obvious problem! Still F3!

To the best of my knowledge, an F3 code indicates a lack of flow; ie a blockage or, at least, that is what is being detected and relayed to the main chip.

As soon as 0.8 to about 1.2 bar is reached when replenishing, F3 comes on and the pump still operates. No air in the pump - bled! The boiler makes no attempt to fire up prior to the F3 code. As soon as the pressure is up - F3!

Any ideas?

PS _ I know these boilers are none too clever and they were made by GW and/or Protherm.
 
Sponsored Links
Joined
26 Jun 2004
Messages
64,193
Reaction score
4,648
Location
London
Country
United Kingdom
F3 is interpreted to mean a blocked heat exchanger.

But that can be main or secondary or a pump fault.

What does it do if CH is selected?

Tony
 
Sponsored Links
Joined
26 Jun 2004
Messages
64,193
Reaction score
4,648
Location
London
Country
United Kingdom
This thread is about a gas operated furnace!

Not a Jaguar car!
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Top