E20
Comenda
Configuration / Parameter or CAN-Bus Fault (on multi-module systems)
General communication or configuration error; E20 displayed and machine may not start.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Incorrect parameter settings, Faulty communication cable between modules, Incompatible or replaced PCB not configured, Electrical noise on communication lines
How to Fix / Troubleshooting
Safety first: Isolate power before accessing control electronics.
- Power cycle: Disconnect power for several minutes, then restore and check if the error clears.
- Check communication cables: Inspect any CAN-bus or serial cables linking control modules. Ensure connectors are fully seated and cables are not damaged.
- Verify configuration: Enter service mode (refer to Comenda service documentation) and confirm that machine model and options are correctly programmed.
- Replace faulty module: If a recently replaced PCB is not recognized, it may require programming or may be incompatible.
Advertisements
Repair Difficulty
Professional Required
5/5
Required Part
Control Communication Harness
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements