Page 54 from 56 6-720-821-364 SM HP270 – 250 - 200 2016/12 en
Code EF6 – Lock Out Error (reset by pressing OK for more than 3 sec) (HP 200_250-1 / 270-3)
Detected an incorrect purge of system with E-heater in normal operation (detected by NTC T dis > 85ºC)
Code E10 – Lock Out Error (reset by pressing OK for more than 3 sec) (HP 200_250-1 / 270-3)
Fault in the E-heater (detection by the current sensor in control unit: I < 6A)
Air presence in hydraulic
circuit in module
Activate PURG function in SET mode
Purge using manual air vent between
pump and condenser
(Attention: water will exit by valve and
precautions are needed to protect
surrounded components)
Thermal Cut out activated (safety
thermostat) due to over temperature
Reset thermostat manually
(measure also continuity
between terminals)
Possible defective E-
Heater –
Ensure that thermostat is really in
contact with e-heater copper pipe
Inspect reason for over-temperature
activation. Scaling may occur in areas with
hard water (refer to recommendation /
guideline in installation manual)
Refer to spare part list
and replace it
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