Innova S.r.l.
Page 24
HRP DOMO EXT Manual
connect the power cord and turn on the unit using the switch on the side
panel.
Use a vacuum cleaner for cleaning, a cloth slightly dampened with water, a
soft bristle brush or a low pressure compressor.
Caution! There are small metal clips on the blades to balance them. DO NOT
remove them.
View for general cleaning of the unit
7
ALARMS
7.1
GENERAL INFORMATION
In the event of problems or faults, make a note of any error codes that may appear on the display of the electronic control unit or
remote control, make a note of the model and serial number of your unit (on the identification plate attached to the side of the unit)
and contact the installer.
7.2
TROUBLESHOOTING WITH NO DISPLAY ERROR
PROBLEM
CAUSE
SOLUTIONS
The fans are not active
-The power supply is not switched on
-The fan speed regulation device is not
working
-Electrical connection error
-Fans thermal protection tripped
-Check the power supply to fan
-Check the fan speed regulation device
-Check that the fan has not
overheated and thermal protection tripped
Insufficient air flow or
available pressure
-Clogged filters
-Insufficient rotation speed
-Clogged tubes or exchanger
-Clean filters
-Increase rotation speed
-Clean tubes or exchanger
Insufficient exchanger
efficiency
-Clogged exchanger fins
-Clean exchanger surfaces
Excessive vibration and
noise
-Incorrect installation of unit
-Incorrect installation of tubes
-Fan impeller imbalance
-Check brackets and fittings of unit
-Check brackets and tube fittings
-Check fan impeller status
Water leakage from unit
-Obstruction in condensate drain
-Syphon not installed correctly
-Clean condensate drain
-Check correct installation of siphon
Problematic start-up
-Power supply voltage too low
-Insufficient motor torque
-Check that the supply voltage is not below 10% of the rated
nameplate voltage
-Power up unit with partially closed dampers to reduce motor
start-up torque. In the event of correct start-up, replace
motor with more powerful version.
