C
Charles GrayAug 1, 2025
What to do if ZIEHL TR600 display failure "E 1" or "E 2"?
- Nnicholas88Aug 1, 2025
If your ZIEHL Relays display a failure message "E 1" or "E 2", indicating an EEPROM parameter failure, first check all programmed parameters and set up new ones if necessary. Then, switch off the supply voltage and restart the device. If the error persists, the relay should be replaced and sent to the factory.