40
7.5. Diagnosis of faults
1
Filter dirt (volume measurement)
Oorzaak
Solution
a)
The ventilation unit detects that the
filters need to be cleaned or replaced.
(based on volume measurement)
●
Disconnect the appliance from the
power supply and clean or replace
the filters.
●
Reset the filter warning after the
cleaning or replacement of the filters.
2
Filter dirt (time measurement)
Oorzaak
Solution
a)
The ventilation unit detects that the
filters need to be cleaned or replaced.
(based on time measurement)
●
Disconnect the appliance from the
power supply and clean or replace
the filters.
●
Reset the filter warning after the
cleaning or replacement of the filters.
3
Flow volume warning
Oorzaak
Solution
a)
The ventilation unit detects that the
exhaust fan does not achieve the
desired flow rate.
within 10 seconds.
●
Clean the flue system,
especially the drain.
●
Then check the volume flow rate.
4
Flow warning supply volume
Oorzaak
Solution
a)
The ventilation unit detects that the
supply fan does not achieve a)
the
desired flow rate.
within 10 seconds.
●
Clean the duct system,
especially the inlet.
●
Then check the volume flow rate.
11
Moisture sensor fault internal
Oorzaak
Solution
a)
The ventilation unit detects that the
internal moisture sensor is
defective.
The ventilation goes to the maximum
position.
●
Replace the electronics
compartment and perform
commissioning again. Report all
controls and sensors
on again.
12
Moisture sensor drain error
Oorzaak
Solution
a)
The ventilation unit detects that the
humidity sensor in the drain is
defective.
The ventilation goes to the maximum
position.
●
Replace the
corresponding fan
module.
13
Moisture sensor supply error
Oorzaak
Solution
Summary of Contents for HRU 400
Page 1: ...Itho Daalderop HRU 400 Installation use A...
Page 2: ...Original document...
