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X
Fault Main Con-
tactor
Unit shuts off auto-
matically
•
•
Main contactor does not drop out.
Relay on the PCB is stuck.
•
•
Replace main contactor.
Replace PCB.
XX
Fault °C sensor • Temperature sensor or line defective. • Check temperature sensor and
sensor line, replace if needed.
Unit shuts off auto-
matically.
• Short circuit in sensor wire (no resistance). • Replace temperature sensor.
Fault sensor
X Unit shuts off auto-
matically.
•
•
Cable connections for the float switch are
faulty.
Plug for the float switch is not connected to he
control
•
•
Check cable connections, replace if
needed.
Connect plug to the control.
XX
Fault °C Max
Unit shuts off auto-
matically.
• Heat buildup in the cabin. • Ensure continuous heat removal.
• Additional heat source in the steam cabin.
• Excessive power retention • check Parameter G9
X
Fault Activated
Thermo Sensor
Unit shuts off auto-
matically.
•
•
Thermo sensor on the top of the cylinder has
been activated (HeaterLine = 2 thermo sen-
sors, HeaterCompact = 1 thermo sensor).
Heating element is coated by lime.
Thermosensor on the heat sink for the solid
state relay has been activated. Openings for
chimney are covered.
•
•
Disconnect power supply. Wait un-
til cylinder has cooled down. Press
the release pin back down with
needle-nose pliers a or a screw-
driver.
Remove lime.
Press the release pin back down
and remove the blocking elements.
LED Dis-
play
HL ***
Hy,C***
Message / Mal-
function Dis-
played*
Probable Cause Resolution
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