27
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WARNING! The tripping of the safety thermostat can be caused by a fault linked to the control
board or by the absence of water inside the tank.
WARNING! Carrying out repair operations on parts that perform safety functions jeopardises the
safe operation of the equipment. Substitute the faulty elements only with original spare parts.
N.B.: The intervention of the thermostat excludes the operation of the electric heating elements but
not the heat pump system within the permitted operating limits.
Thermal protections
First step protection: when the tank water goes up to 85°C,
the unit will stop and the relating error
code will be shown on the controller. This is an auto-reset protection. When tank water temperature
goes down, the unit can start again.
Second step protection: when the tank water keeps going up and reaches 90°C,
the manual reset
cut-off will be active, the electrical heater stops, unless you manual reset the protector.
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