!!
critical Danfoss
Error Code E20
Error on pressure transmitter Pc.
? What Causes This
Fault or malfunction of the pressure sensor (PC).
✓ How to Fix It
Check and replace faulty parts such as the sensor or cable. Follow maintenance procedures if necessary.
Source: page 6 of the official manual
From the manual
This error code appears in:
Danfoss Optyma Control