49
SHERPA
4
GB
Effect
La pompa di calore non funziona.
The compressor switches on but stops
immediately after.
Unsatisfactory heating.
The programmed outflow water
temperature is adjusted to a value that is
too low (heating mode) or too high
(cooling mode) on the control box.
Cause
There is no communication with the
external unit and on the control panel
display of the external unit the symbol
appears and is accompanied by the prompt
R.C.1.
In version 15 or 18 three-phase, alarm
P05
appears on the control panel of the
external unit.
Line voltage is too low.
The operation pushbutton is in the
off
position.
The wire remote control or the heat pump
does not work correctly (the inspection
symbol as well as the letters
E
,
F
,
H
,
L
,
P
and some numbers appear on the liquid
crystal display of the remote control).
Presence of an obstacle in front of the
external unit exchanger.
Problem with the circulation of water.
Doors and/or windows open.
The thermostat is adjusted to a
temperature that is too high for cooling (or
too low for heating).
Defrosting of the system does not work.
Solution
Open the inspection panel of the external
unit and press the AUTO ADD button
(Automatic address button) positioned on
the electronic board (fig. 25).
Invert two of the three-phase power
supply phases
Contact an electrician or your installer.
Press the pushbutton again.
Contact the installer.
Remove the obstacle.
Clean and/or check the heating hydraulic
circuit.
Close them in order to prevent air from
entering.
Adjust the temperature to a higher or lower
value.
Contact the installer.
If during operation of the unit there is an interruption in the current, when the power is reconnected the unit will restart
and will maintain the same settings that were entered before the power was interrupted.
