Heatrae Sadia HRU ECO 4, Руководство пользователя

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The fan runs at high speed when low speed is selected and at low speed when high speed or timer mode is selected
Cause
Solution
a) One of the ventilation unit's internal temperature
sensors is faulty.
●
Replace the faulty temperature sensor.
The fan suddenly starts running much faster or slower (for no apparent reason)
Cause
Solution
a) The RF remote control from a neighbouring property
is paired with this ventilation unit.
●
Disconnect power to the ventilation unit for 15
seconds. Unpair any paired RF devices
(switches and/or sensors) and then pair them
again.
The ventilation unit is not responding to the three-position switch
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 switch wires of the three-position switch are
connected incorrectly.
●
Connect the switch wires correctly (see wiring
diagram).
d) The ventilation unit PCB is faulty.
●
Replace the PCB and carry out the
commissioning procedure again.
The ventilation unit is leaking water
Cause
Solution
a) The condensate drain is not connected.
●
Connect one of the two condensate drains.
b) The condensate drain is blocked.
●
Unblock the condensate drain and try to
identify the cause of the problem.
The ducts leading outside are wet (on the outside) and/or are leaking water
Cause
Solution
a) The ducts leading outside are not thermally insulated
or vapour-tight.
●
Ensure that the ducts leading outside are
thermally insulated and vapour-tight over their
entire length.
b) The roof feedthrough is not rainproof or vapour-tight.
●
Replace the existing roof feedthrough(s) with
rainproof and vapour-tight roof feedthrough(s).
The valves are noisy
Cause
Solution
a) No noise dampening hose has been installed in the
ducts leading into the dwelling.
●
Install noise damping hoses on the ducts
leading into the dwelling.
b) The air valves are not correctly adjusted.
●
Put the ventilation unit in commissioning mode
and readjust the system settings.
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