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Installation and Operating Instructions
EN
Central ventilation units AIR1 XH
•
Reset - The alarm is no longer present.
•
Blocked - The alarm has been blocked. A blocked alarm is displayed until it is no longer present and the block is
cancelled. New identical alarms will not be activated while the block exists.
•
Unblocked - The block has been cancelled for a blocked alarm.
•
Activated - The alarm has been activated from the normal state.
Alarm list:
Alarm
Fan alarms
Malfunction supply air fan
Malfunction extract air fan
Supply fan external operation
Extract fan external operation
Filter change
Filter guard 1
Filter guard 2
Temperature alarms
Supply air control error
High supply air temp.
Low supply air temp.
High room temperature
Low room temperature
High extract air temp
Low extract air temp
Overheated electric preheater
Priority
Stop
Check/Solution
A
Yes
• Please make sure that the volume flow of ventilation stage
minimal is not setto low.
• Check pressure hose connection (also inside the pressure
sensor)
• Is the duct clear before/after the unit?
• Are the volume control dampers closed?
• Is the electrical connection of the fan ok?
A
Yes
• Please make sure that the volume flow of ventilation stage
minimal is not setto low.
• Check pressure hose connection (also inside the pressure
sensor)
• Is the duct clear before/after the unit?
• Are the volume control dampers closed?
• Is the electrical connection of the fan ok?
C
No
• Fan rotating despite deactivated system
• Check external inputs
• Fan possibly propelled by booster fan
• Strong wind/draught possibly driving the impeller
C
No
• Fan rotating despite deactivated system
• Check external inputs
• Fan possibly propelled by booster fan
• Strong wind/draught possibly driving the impeller
B
No
• Replace supply air filter
B
No
• Replace exhaust air filter
B
No
• TARGET/ACTUAL temp. difference is greater than 5 K for
30 minutes
• Setpoint is unrealistic check
• Check optional heating/cooling register
• Check mixer for optional hydraulic unit
• Check flow temperature of water heating register
B
No
• Outdoor temp./solar radiation is very high
• Setpoint is too high (35 °C) check
• Check optional heating
• Check mixer for optional hydraulic unit
B
Yes
• Setpoint is too low (10 °C) check
• Check optional heating
• Check mixer for optional hydraulic unit
• Check bypass functionality
B
No
• Outdoor temp./solar radiation is very high
• Setpoint is too high (35 °C) check
• Check optional heating
• Check mixer for optional hydraulic unit
B
No
• Setpoint is too low (10 °C) check
• Check optional heating
• Check mixer for optional hydraulic unit
B
No
• Outdoor temp./solar radiation is very high
• Setpoint is too high (35 °C) check
• Check optional heating
• Check mixer for optional hydraulic unit
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
75
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