Warning!
When working on the appliance, always fi rst take the voltage from the appliance by pulling
the power plug.
In the table below the locking faults are marked with an * after the fault number. The display shows a brief expla-
nation of this fault code. If there is reference to the "Standby" mode of the appliance, then both fans are shut down
but there is still something shown on the display of the appliance.
Faultcode
Subcode
Cause
Appliance action
User action
E190
E1000
Self-test not good
No action
E152*
E1001 *
Flash memory faulty
Stop appliance if
possible
Replace basic pcb UWA2-B
E153
E1002
EEPROM memory
defective
Appliance goes to
factory setting; fan
setting 2
Replace basic pcb UWA2-B
E105
E1011
Requested supply fl ow
rate is not achieved
None
Clean or replace fi lters
Check that ducts are not blocked
E104
E1012
Requested exhaust fl ow
rate is not achieved
None
Clean or replace fi lters
Check that ducts are not blocked
E000*
E1013 *
Temperature of outside
air too high
Appliance goes to
standby
Depending on the situation:
In the event of warm weather and a supply directly below
the tiles, wait until the air has cooled or install a roof sleeve
instead of duct under the tiles
In the event of cold weather or when there is no air from
below the tiles, take the voltage from the appliance and
replace air temperature sensor (NTC)
E105*
E1100 *
Supply fan defective;
general message
Appliance goes to
standby
Replace supply fan
Fault is reset automatically when voltage is put back on
appliance.
E104*
E1120 *
Exhaust fan defective;
general fault message
Appliance goes to
standby
Replace exhaust fan
Fault is reset automatically when voltage is put back on
appliance.
E103
E1200
Bypass defective;
general fault message
None
Check wiring
Replace bypass or wiring harness
E106*
E1300 *
Sensor NTC1 defective;
general fault
Appliance goes to
standby
Check wiring
Replace NTC sensor or replace wiring
E111
E1400
RHT sensor 1 defective;
general message
No humidity control
Check wiring
Replace RHT sensor or replace wiring
E114
E1500
Multiple switch defective;
general fault
Appliance goes
to mode 1
Replace multiple switch
E113
E1600
Internal preheater
defective; general fault
message
Frost protection goes to
imbalance mode
Check fuses
Check wiring; replace if damaged and replace otherwise
the internal preheater
Fault is automatically reset when the voltage is put back on
the appliance.
E130
E1800
Relay output 1 defective;
general fault
Signal output not
available
Take voltage from appliance
Replace UWA2-B pcb
Fault is automatically reset when voltage is again put back
on appliance
E1155
E2000
Touchscreen fault;
general fault
message
Fault codes only visible
when using service tool
Check wiring to touchscreen; replace wiring
if damaged; replace touchscreen if fault still occurs replace
UWA2-B
Fault is automatically reset when voltage is again put back
on appliance
Foutcode
Subcode
Oorzaak
Actie toestel
Actie gebruiker
E120
E2100
EBus fault; general fault
message
Air Control and other
accessories connected
to eBus do not work.
Appliance is working
Check wiring to accessories/ Air Control
Check accessories/ Air Control and replace if defective
If there is still a fault after this: Take voltage from appliance
and replace basic pcb UWA2-B
E121
E2200
externalBus general fault
message
Air Control and other
accessories do not work.
Appliance is working
Check wiring to accessories/ Air Control
Check accessories/ Air Control and replace if defective
If there is still a fault after this: Take voltage from appliance
and replace basic pcb UWA2-B
E122
E2300
Internal ModBus fault;
general fault message
Appliance goes to
standby
Check wiring and connections to UWA2-B and the fans
Replace cable harness if damaged; Then exchange
UWA2B, exhaust fan and supply fan
E123
E2400
Internal ModBus fault;
general fault message
Operation via Modbus
does not work
Check cabling of accessories; replace if damaged
Check accessories; replace if defective
If fault still occurs: Take voltage from appliance and
replace UWA2-B basic pcb
E124
E2500
USB port general fault
message
USB interface not usable
Replace USB accessory
If the fault is not remedied after this: take the voltage from
the appliance and replace UWA2-B basic pcb
E170
E2600
One or more CO
2
sensor(en) defective;
general fault message
Appliance is working;
no CO
2
regulation
Check cabling and CO
2
sensor(s); replace if damaged
Check CO
2
sensor(s); replace if defective
E171
E2700
External preheater or
fuse defective; general
fault message
No preheater / comfort
control responds
diff erently
Uncouple preheater and check preheater fuse; replace
fuse if defective
Has the fault not yet been remedied:
Replace external preheater
Put voltage back on appliance
Fault has automatically been reset
E172
E2800
External postheater or
fuse defective; general
fault message
No postheater / comfort
control responds
diff erently
Uncouple postheater and check postheater fuse; replace
fuse if defective
Has the fault not yet been remedied:
Replace external postheater
Put voltage back on appliance
Fault has automatically been reset
28 | Art.-nr.:
616711-A
Ubifl ux Vigor W225 | 29
