OPERATING AND INSTALLATION MANUAL SURFACE-MOUNTED UNIT LG 100 AP
PAGE 43
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19. Error description
Error descriptions are provided for the corresponding light patterns in the following table.
Errors can be located precisely using the service software (available to specialist personnel only).
Pattern
Error
Error LED flashes once
Z04, Z05 (fan error)
Error LED flashes twice
Z07 - Z014 (combi sensor error)
Error LED flashes 3 times
Z15, Z16 (sensor error)
Error LED flashes 4 times
Z17, Z18 (flap error)
Error LED flashes 5 times
Z01, Z02 (data transmission error)
Error LED flashes 6 times
Z14, Z15 (risk of frost)
Green and red LEDs flash alternately
Z16 (filter message)
None of the LEDs is lit
Z02 (check voltage supply of MINI control unit)
Error
Description
Z01
No Internet connection possible
Z02
Communication of combi sensor 1
Z03
Communication of combi sensor 2
Z04
Exhaust air fan blocked (speed monitoring)
Z05
Outdoor air fan blocked (speed monitoring)
Z06
Combi sensor 1: T1 - outdoor air
Z07
Combi sensor 1: volume flow - outdoor air
Z08
Combi sensor 1: relative humidity - outdoor air
Z09
Combi sensor 1: VOC/CO2 sensor - outdoor air
Z10
Combi sensor 2: T2 - exhaust air
Z11
Combi sensor 2: volume flow - exhaust air
Z12
Combi sensor 2: relative humidity - exhaust air
Z13
Combi sensor 2: VOC/CO2 sensor - exhaust air
Z14
T3 - extract air
Z15
T4 - supply air
Z16
Outdoor air flap (current monitoring)
Z17
Exhaust air flap (current monitoring)
Z18
Pre-heating battery has no power
Z19
Risk of frost
Z20
Replace air filters
19.1. Error description for the MINI control unit
GENERAL
USER
SPECIALIS
T PERSONNEL