EWM DC Comfort 3.0 Operating Instructions Manual page 68

Rectifying faults
Error messages (power source)
Error 32: Error I>0
 Current recording is faulty.
Request service.

Error 33: Error UIST
 Voltage recording is faulty.
Eliminate the short circuit in the welding circuit.

Remove the external sensor voltage.

Request service.

Error 34: Electronics error
 A/D channel error
Switch the machine off and on.

Request service.

Error 35: Electronics error
 Slope error
Switch the machine off and on.

Request service.

Error 36: errors
conditions violated.

Switch the machine off and on.

Request service.

Error 37: Electronics error
 The power source is overheating.
Allow the switched-on machine to cool.

 Fan is blocked, dirty or defective.
Check the fan and clean or replace.

 Air inlet or outlet is blocked.
Check the air inlet and outlet.

Error 38: Error IIST
 Short circuit in the welding circuit before welding.
Eliminate the short circuit in the welding circuit.

Request service.

Error 39: Electronics error
 Secondary overvoltage
Switch the machine off and on.

Request service.

Error 40: Electronics error
 Error I>0
Request service.

Error 47: Radio link (BT)
Category B
 Connection error between welding machine and peripheral unit.
Note the documentation for the data interface with radio transmission.

68
099-00T501-EW501
1.2.2023