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Errors


Boiler type Greenstar ZBR42-3A

Error code Ad

Cause:

DHW tank temperature not detected.
The DHW tank temperature sensor was recognized before the connection was lost.

Solution:

Check DHW tank temperature sensor and connecting lead, replace if defective. Reset the boiler to the factory default settings ( service function 8.E), reset the IPM 2 (if installed) to the factory default settings and carry out the automatic system configuration.