43
19
Fault valve zone 3
Oorzaak
Solution
a)
The ventilation unit detects that the
damper for zone 3 is not, or not properly
connected or defective.
The ventilation unit functions normally,
but the air flow may be out of balance.
●
Connect the relevant valve correctly.
●
Replace the valve in question.
20
Fault valve zone 4
Oorzaak
Solution
a)
The ventilation unit detects that the
valves for zone 4 are not, or not properly
connected or defective.
The ventilation unit functions normally,
but the air flow may be out of balance.
●
Connect the relevant valve correctly.
●
Replace the valve in question.
21
Bypass valve fault
Oorzaak
Solution
a)
The ventilation unit detects that the
bypass valve is not, or not
properly connected or is defective.
The ventilation unit functions normally,
but the air flow may be out of balance.
●
Connect the bypass valve correctly.
●
Replace the bypass valve.
22
Frost valve error
Oorzaak
Solution
a)
The ventilation unit detects that the frost
valve is not, or not properly connected or
defective.
The ventilation unit functions normally,
but the air flow may be out of balance.
●
Connect the frost valve correctly.
●
Replace the frost valve.
23
Electronic compartment error
Oorzaak
Solution
a)
The ventilation unit detects that the
electronics compartment is a)
either
incorrectly connected or defective.
Ventilation is switched to automatic
mode in all zones.
●
Connect the electronics
compartment correctly and
perform commissioning again.
●
Replace the electronics
compartment and feed the
Commissioning off again.
31
Error volume sensor drain
Oorzaak
Solution
a)
The ventilation unit detects that the
volume sensor of the outlet is
defective.
The ventilation unit stops.
●
Replace the
corresponding fan
module.
Summary of Contents for HRU 400
Page 1: ...Itho Daalderop HRU 400 Installation use A...
Page 2: ...Original document...
