I need a protherm 80e manual, any idea where I can download one from? The baxi site does not do support manual downloads. :(

http://us.navien.com/__DATA/ProductDocument/2012/11/30/3.%20Operation%20Manual_CH-180_210_240ASME_111201.pdf

google your boiler it comes up with a manual go to page 26 it gives you 5 reasons why it goes to f1

Silver flex hose may be the (correct) filling loop. There may be a valve at each end of it, maybe just one at one end.
Open the single valve slowly and LISTEN for the sound of water entering the system, and LOOK for signs of the pressure gauge rising.
On the dual valve version open the first, then open the second slowly as above. Close both valves when pressure is adequate. Adequate is determined by the specifics of your system, but note that more pressure DOES NOT mean better showers, etc.
It should only take a few seconds to top-up, any longer indicates a significant loss of fluid from the system.

1/overheat stat2/ fan 3/ diaphrapm valve 4/micro switch check small rubber or nylon hose at fan for pinhole best of luck

best change for manual programmer no hassle cheap to buy easy to fit best of luck

check daiphragm, or micro switch best of luck

best to apply to any local merchant for a manual will get you one sent through the post best of luck

Sounds likely. But check the timer selector switching [on/off/24hrs] & if you have a room thermostat wired in

any merchant will get one mailed out to you