where can i get the manual handbook of protherm 80e?

we are suffering with cold water & the coldness of our flat. we heat up water from our kettle just to have a bath & wash our dishes for about 2 months now. my cobi boiler lcd say's f1, how to mend it. ive'd contacted three corgi already but they don't have the manual of protherm 80e combi boiler. where can i get the manual of protherm 80e?