Alpha-InnoTec Luxtronik Operating Instructions

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We reserve the right to make technical changes | 83055400dUK – Translation of the original instruction manual (2.1) | ait-deutschland GmbH
No. Display Description Remedy
761 LIN timeout LIN timeout Check cable/contact
762 sensor (evaporator intake) Tü sensor error
(evaporator intake)
Check sensor, replace if necessary
763 sensor (compressor intake) Tü1 sensor error
(compressor intake)
Check sensor, replace if necessary
764 Sensor Compressor heater Sensor error
Compressor heater
Check sensor, replace if necessary
765 Overheating Overheating longer than 5 minutes below 2K When switching on for the rst time, check
rotary eld, otherwise phone customer
service
766 compressor's functional
range
Operation for 5 minutes outside the compressor's functional
range
Check rotary eld
767
STB E-Rod STB of the heating element has been activated at the SEC Check the heating element and press the
fuse back in
768 Flow monitoring Insucient ow at LW160H (A)V in defrost cycle Check hydraulics, check pump, check ow
769 Pump control After 10 sec compressor runtime excessively low ow. Check PWM cable, check pump
770
Low superheat Overheating lies below the limit value for a lengthy period Check the temperature sensor, pressure
sensor and expansion valve
771
High superheat Overheating lies below the limit value for a lengthy period Check the temperature sensor, pressure
sensor, fill quantity and expansion valve
776
limit of application-CP Compressor operates outside its use limits for a lengthy
period
Check the thermodynamics
777
Expansion valve Expansion valve is defective Check the expansion valve, connection
cable and if applicable the SEC board
778
Low pressure sensor Low-pressure sensor is defective Check the sensor, connector and
connection cable
779
High pressure sensor High-pressure sensor is defective Check the sensor, connector and
connection cable
780
EVI sensor EVI sensor is defective Check the sensor, connector and
connection cable
781
Liquid temp. sensor before
EXV
Liquid temperature sensor upstream of the ex-valve is
defective
Check the sensor, connector and
connection cable
782
Suction gas EVI temp.
sensor
Suction gas EVI temperature sensor is defective Check the sensor, connector and
connection cable
783
Communication SEC -
Inverter
Communication between the SEC & the inverter is disrupted Check the connection cable, interference
suppression capacitors and wiring
784
VSS lockdown Inverter is blocked Disconnect the complete system from the
power supply for 2 minutes.
If it occurs again, check the inverter and
compressor
785
SEC-Board defective Error found in the SEC board Replace the SEC board
786
Communication SEC -
Inverter
Fault found in communication between the SEC and
HeatingIO of the SEC
Check the Heating/IO SEC board cable
connection
787
VD alert Compressor signals faults Acknowledge fault.
If an error occurs repeatedly, phone the
authorised service personnel (customer
service)
788
Major VSS fault Fault in the inverter Check the inverter
789
LIN/Encoding not found Control unit unable to find coding. Either the LIN
connection is interrupted or the coding resistor is not
detected
Check the connection cable LIN / coding
resistor
790
Major VSS fault Fault in the power supply of the inverter / compressor Check the wiring, inverter and
compressor

Alpha-InnoTec Luxtronik Specifications

General

Brand	Alpha-InnoTec
Model	Luxtronik
Category	Controller
Language	English