P26 on screen of Konica 1216 copier. Can you help

Hi ben5908,

This error codes related to fuser error. try:
1 ) hold 4 and 7 key together and switch on machine then enter key 9 and 0 then press print this will rest your service call indication
switch off machine

2) hold 2 and 5 key together and switch on machine then enter key
5 and 1 then press print this will calibrate developer one to two 
minutes machine stops when over switch it off and on.
let us know if this resolve the issue.

Regards
R.K.