Pyromat DYN 85 Ecotronic Witterungssensor unterbrochen

[emh0]

Hallo.
I have in Pyromat DYN 85, year of manufacture 2008, with Ecotronic control panel, and it shows "weather sensor interrupted". Where can I find this sensor so that I can change it, or it is possible that it doesn't have it at all. I bought it like that.

[emh0 · Accepted solution]

sockets behind the boiler

[emh0]

the labels:

400V - POWER SUPPLY

Y28 - mixer 

B28 - sensors for temperatures at storage tank

CAN1 - to ecotronic Panel

K0 - ??? probabily power for a motor

B20 - sensor for temperature flow

Y20 - 

M20 - kessel pumpen

B20.1 - sensor for temperature return flow 

M1 - exhaust fan

B1 - sensor for temperature exhaust gas

B02 - sensor for safety temperature at snecke

CAN2 - to snecke motors

M16 -  igniter

U31 - power suply to snecke motors

[emh0]

Ecotronic

[emh0]

probably at X14 would be the socket for the external temperature.
because when I put a sensor (probably not suitable) the external temperature indicated on the Ecotronic increases, but it indicates that the Connection bus is short-circuited.
Where can I buy a sensor that fits?