USER MANUAL - rev 10
RS
Dehumidifiers for radiant systems
21 - 52
7
AFTER-SALES
7.1
FAULTS
In the following pages there is a list of the most common causes which could lead to the block of the unit or to a non-correct
functioning.
Be careful when executing the operations suggested for the resolution of the different problems:
wounds may occur.
After having identified the cause, it is strongly recommended to contact the manufacturer or a
qualified technician.
NR
ANOMALIES
POSSIBLE CAUSES ANALYSIS
SOLUTIONS
1
The unit does not start
Lack of supply power
Check the power supply on the clamps
The user terminal is in OFF mode
Push the Stand-by key to turn the unit on
There are alarms present
Check on the display, remove the cause and
re-start the unit
The unit has just been turned on and the
compressor has a delay
Wait few minutes
2
The compressor does not start
Intervention of the internal thermal-
protector
Remove the power supply, wait for the
cooling of the compressor and check,
reconnecting the power supply, if it starts
again.
Intervention of the high-pressure
protection on the refrigerant circuit
Make reference to the anomaly nr 4
3
The fan is too noisy
The distribution channel has deformed
the unit
Remove the fixing screws from the ducted
channel and fix it in a different way
4
Flashing writings “E1” and “On”
and alarm presence flashing led
and sound signal
High pressure anomaly for insufficient
air flow
Check the correct rotation of the fan
Check the cleaning of thermal exchange coils
and filters
High pressure anomaly for insufficient
air flow (only for I version)
Check the load losses and the correct
functioning of the hydraulic circuit. Check
that the inlet water T is not too high.
WATER probe anomaly.
(Errors may be caused by short-circuit or
probe interruption)
Check the WATER probe status.
If the problem remains, substitute the probe
5
Flashing writings “E1” and “On”
and alarm presence flashing led
EVAP. Probe anomaly (Errors may be
caused by short-circuit or probe
interruption)
Check the EVAP probe status.
If the problem remains, substitute the probe.
In this case, defrosts cycles are timed.
6
Flashing writings “E2” and “On”
and alarm presence flashing led
An error has occurred in the EEPROM
memory. (Outputs are all in-active)
Turn off and re-start the unit.
If the problem remains, substitute the user
terminal.
7
Flashing writings “EL” and “On”
and alarm presence flashing led
Low temperature read by the WATER
probe
Increase the temperature of the water
supplied to the unit
8
Flashing writings “EH” and “On”
and alarm presence flashing led
High temperature read by the WATER
probe
Reduce the temperature of the water
supplied to the unit
