REMEHA iSense - Troubleshooting Fault Codes

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7.1 Fault messages
F200: No connection to outside sensor
Fault code F200
and are lit up.
No connection to outside sensor.
Check the boiler's connection to the outside temperature sensor.
Fault indication
Display text
Solution
T001014-06-A
F203: Faulty connection to boiler
Fault code F203
is lit up.
Communication fault. Check the connection.
Check the connection to the boiler.
Fault indication
Display text
Solution
T001009-06-A