Aereco DXA 230 EXCELLENCE, Installation And Maintenance Instruction

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TF6401_E Aereco S.A.
7. TROUBLESHOOTING
Faults Causes Actions
Condensate leaks or water noise
in the heat exchanger
Poor condensate evacuation
Make sure the external pipes have been installed properly.
Siphon has to be full of water.
Poor condensate evacuation
(Using a lift pump)
Make sure it is correctly working according pump’s manual.
Low airflow levels at grilles Network leaks Inspect the aeraulic network and sealing.
Cold incoming air supply
Bypass open
- Make sure the bypass is in good condition and the motor is operating properly.
- Re-start the DXA Unit by disconnecting it during 30 seconds from power.
- Control filter clogging, and if necessary, replace them.
Defrosting default
Supply ductwork insulation
- Make sure the airflow rate is not too low.
- Check the unobstructed passage of air in the defrosting
- Make sure ductwork are placed in a warm area or they are properly insulated.
The motors are not working
Power supply Make sure the DXA Unit is connected to the main electrical board.
Control unit is not connected
to main unit
- Make sure interface is connected to the unit
- Make sure the DX Hub is connected to the unit
- Make sure the exhaust compensation valve is connected to the unit
The motors are running too fast
Aeraulic network not connected Connect the network
Pressure loss or major leakage on the
network - Improve the network installation, use the recommended grilles and roof exhausts
- Be sure to respect the recommendations of installation
Too high number of extraction grille Check the operating limits
Filters are clogged Make sure filters have been changed when system asked for it.
Heat exchanger is frozen
(Using a defrosting)
- Make sure the defrosting is connected to the unit and to the main.
- Make sure the defrosting is taken into account in the parameters of the DXA Unit user's interface.
- Make sure the manual reset of the defrosting has not been triggered. In case it has been triggered,
check the unobstructed passage of the air near the defrosting before resetting the security.
Interface is turned off - Disconnect the DXA Unit and wait 2 or 3 min before connecting it again (reset of the interface).
Filters are clogging too fast
Filters are placed in the wrong way
Make sure filters are placed in the right way as explained in the “Installation and maintenance
instructions”.
The system makes noise
of vibrations
The Unit is fixed in the wrong way Make sure the system is fixed as explained in the recommendations of installation
How to reset the device ?
During the setting mode on the
interface, if parameters have been set
with wrong values, it is still possible to
reset the whole system.
1) Switch off the heat recovery unit.
2) Acces to the interface electronic board.
3) Push for 3 seconds the reset button.
4) Replace the interface
5) Switch on the heat recovery unit
6) Make again the installation procedure following the interface requirements.