Unlock The Overtemperature Protection; Pump-Motor Supervision: Overload - Lauda Alpha Operating Instructions Manual

7.11.4

Unlock the overtemperature protection

7.11.5

Pump-motor supervision: Overload

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 Switch off the thermostat, pull out the mains plug!
 To unlock the protection, push the reset knob behind the ventila-
 Switch on the thermostat.
A temperature sensor monitors the pump:

1. Alarm sounds as dual-tone signal for pump-motor overload or blockage.
2. Display of
3. The red LED
 Heater switches off on both poles;
 Pump and refrigerating unit are switched off electronically.
 Switch off the thermostat, pull out the mains plug!
 Find the cause of the fault. Perhaps the viscosity of the heat transfer liquid is
too high or the pump is blocked.
 Rectify cause of fault.
 Press the <Enter> key.
 Also press this key if the unit has been switched off in the fault state.
tion grille (see arrows). You can use for example a pen.
PuP
signals blockage.
above the fault triangle
Alpha
flashes.
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