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error Ebeco
Error Code E4
Open circuit in floor temperature sensor wiring.
? What Causes This
Breakage or looseness of the floor temperature sensor cables, connectors, or junction box connections.
✓ How to Fix It
- Disconnect power and inspect wiring for breaks or loosened connections.
- Reconnect faulty sections and test operation.
Source: page 48 of the official manual
From the manual
This error code appears in:
Ebeco EB Therm 500 Floor Heating Thermostat