Heatrae Sadia HRU ECO 4, Руководство пользователя

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The status LED on the ventilation unit blinks three times red and once orange
Cause
Solution
a) The ventilation unit detects a fault with the sensor.
●
Check whether the sensor is properly
connected. Connect the sensor properly.
●
Check the sensor for defects, and replace it if
necessary.
The status LED on the ventilation unit lights up green for 6 seconds and blinks once orange
Cause
Solution
a) Frost mode is active.
●
This is not a fault. The unit will automatically
return to normal operation once the
temperature rises above freezing.
The status LED on the ventilation unit lights up green for 5 seconds and blinks twice orange
Cause
Solution
a) Bypass mode is active.
●
This is not a fault. The unit will automatically
return to normal operation.
Neither fan is rotating
Cause
Solution
a) The ventilation unit's plug is not plugged into a
power socket.
●
Insert the plug into a power socket.
b) The power socket is not providing power.
●
Restore the power at the power socket.
●
Use another power socket.
c) The fuse on the circuit board is faulty.
●
Replace the fuse.
d) The ventilation unit PCB is faulty.
●
Replace the PCB and carry out the
commissioning procedure again.
The exhaust fan (bottom) has stopped
Cause
Solution
a) The fan connector is loose or not properly connected.
●
Fit the fan connector on the correct connector
on the circuit board.
b) The fan is blocked or stuck due to heavy soiling.
●
Clean the fan impeller. Watch out for the
balance clips.
c) The fan is defective.
●
Replace the fan.
d) The ventilation unit PCB is faulty.
●
Replace the PCB and carry out the
commissioning procedure again.
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