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Installation and Operating Instructions
Compact Ventilation Units AIR1 XC
Alarm
Low extract air temp
Overheated electric preheater
Overheated electric after heater
Frost protection alarms
Low frost guard temperature
Deicing Alarm
DX Defrosting mode active
Manual mode alarms
Output manual operation
Manual operation supply air
control
Manual operation supply air fan
mode
Manual supply air fan frequency
control
Manual operation extract air fan
mode
Manual extract air fan frequency
control
Manual operation heater control
Manual operation heat exch-
anger
Manual operation cooler valve
Manual operation P1 heater
Manual operation P1 cooler
Manual Y5 extra sequence
Sensor error alarms
Sensor error supply air temp.
Sensor error extract air temp.
Sensor error exhaust air tempe-
rature
Sensor error outdoor tempera-
ture
Sensor error frost protection
temp.
Sensor error filter guard 1
Sensor error filter guard 2
Sensor error SAF pressure
Priority
Stop
Check/Solution
B
No
• Setpoint is too low (10 °C) check
• Check optional heating
• Check mixer for optional hydraulic unit
A
Yes
• Over temperature limitswitch on electric pre heater is
activated → Reset
A
Yes
• Overtemperature limit switch on electric after heater is
activated → Reset
A
Yes
• Check warm water temperature
• Check warm water valve and pump
• Check correct position of frost guard sensor
• Check bypass damper functionality
C
Yes
• Unit stopped because of heat exchanger frost protection
• Check Exchanger defrost
• Check if pre heater is activated in commissioning assistant
C
Yes
• Alarm ends automatically once the external unit finishes its
defrosting process
C
No
• Check settings in configuration menu
C
No
• Control via operating mode manually
C
No
• Control via operating mode manually
C
No
• Control via operating mode manually
C
No
• Control via operating mode manually
C
No
• Control via operating mode manually
C
No
• Control via operating mode manually auxiliary
heating
C
No
• Control via operating mode manually (only rotary
heat exchanger)
C
No
• Control via operating mode manually
C
No
• Pump warm water auxiliary heating
• Control via operating mode manually
C
No
• Pump cold water cooling register
• Control via operating mode manually
C
No
• Recirculation Damper
• Control via operating mode manually
B
Yes
• Check supply air sensor in unit (PT 1000)
• Check wiring
B
Yes
• Check extract air sensor in unit (PT 1000)
• Check wiring
B
Yes
• Check exhaust air sensor in unit (PT 1000)
• Check wiring
B
Yes
• Check outdoor air sensor in unit (PT 1000)
• Check wiring
B
Yes
• Check frost protection sensor of warm water heating
register (PT 1000)
• Check wiring
B
No
• Check Supply air Pressure transmitter and pressure hoses
(also inside pressure sensor)
B
No
• Check Extract air Pressure transmitter and pressure hoses
(also inside pressure sensor)
B
Yes
• Check Supply air Pressure transmitter and pressure hoses
(also inside pressure sensor)
60
EN
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