J
Judy MartinezAug 31, 2025
What to do if 8Err78 appears on the ZIEHL UFR1001E Relays display after reconnection attempts?
- LLisa WoodsAug 31, 2025
If '8Err78' appears after two automatic reconnection attempts and LEDs K1 and/or K2 are lit, it indicates that feedback contacts are not correctly connected. Check the connection of the feedback contacts, set the turn-on time of the section switch under '8trel.8', and then perform a reset by interrupting the control voltage for more than 5 seconds.