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3.3 Troubleshooting
Supply air is too cold
Possible cause
The exhaust filter is clogged.
The heat exchanger rotor is not rotating
The motor of the heat recovery rotor does not work.
The overheating protector of the after-heating coil is
out of order
The exhaust fan doesn't work
The insulation of the ducts is insufficient
Ventilation intensity is weaker than usual
Possible cause
HRV settings are not configured properly
Clogged filters
Fan speed is too low
The air intake grille is clogged
The fan wings are dirty
Noise level is higher than usual
Possible cause
The filters are clogged
The heat exchanger is not working and the motor
shakes and roars.
The bearings of the fan are out of order
The air intake grille is clogged
The fan wings are dirty
Remedy
Change the filter
Check if the belt is loose or broken, replace it if
necessary.
Contact service technician
switch off the alarm, if the fault reoccurs, contact
service technician
Contact service technician
Add more insulation
Remedy
Consult competent technician to configure settings of
your HRV
Change the filters
Choose higher fan speed or adjust the fan speed
settings through the service menu
Check and clean the grille
Clean the fan wings
Remedy
Change the filters
Determine the cause of the problem, contact the
service if necessary
Contact service or change the fan
Check and clean the grille
Clean the fan wings
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