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User`s manual

ManualsBrandsAirflow ManualsHousehold AppliancesRA3
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Problem Possible causes Troubleshooting
Thermostat fails to start Inspect - we recommend using a professional
service company
capacity of the heater
Heat source fails to start Inspect - we recommend using a professional
service company
Incorrect damper setting Adjust - we recommend using a professional
service company
Different volumes of
fresh and exhaust air
Incorrect fan speed setting Adjust - we recommend using a professional
service company
No voltage in the unit Inspect the upstream circuit breaker and fuse
disconnector. Contact a specialized electrical
installation company.
Incorrectly connected
conductors
Check again whether all conductors have been
properly connected.
Check for the tightness of conductors in
terminals (assign to service technician).
Interrupted line Check whether the line was not damaged (slit,
broken etc.) when it was fitted to connect the
ventilation unit and controller (assign to service
technician).
After connecting the
controller and power
supply the unit fails to
react
The unit was connected to
power supply before the CP 08
RD controller was installed
Disconnect the unit from power supply, wait for 5
seconds and re-connect.
4. Mai nte nan ce
Replacing filter cloth or filter cassettes
(the following procedure applies to DUPLEXVENT RK2 and RA3 units; filters in other units have different shapes and
filters in DUPLEXVENT R_3 units are fixed in a different way)
a ) R e c i r c u l a t io n fi l t e r - te x t i l e
1 Disconnect the hot air unit from power supply by switching off the upstream circuit breaker.
2 Open the door.
3 Slide out the filter and replace the G4 (F7) cloth. Make sure the filter is positioned so that air comes in through the
blue side of the filter and comes out through the white one (the white side faces the fan). An F7 filter must be
positioned so that air enters through the “hairy” side. Slide the filter back in. Filters in DUPLEXVENT R_3 units
should be replaced after approx. 10-12 weeks of operation. The replacement interval is shown on the CP08RD
controller.
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