16
MAIN DISPLAY
Visualizes:
Inlet water temperature
Active alarms
LEVEL 1
Probe status
ALARMS
SET POINT
Active alarms Codes
LEVEL 2
-----
Press
Press
Press
mode
on off
Compressor thermal protection alarm:
- Compressor thermal protection open.
- Faulty power supply.
E03
E01
E02
Fan thermal protection alarm.
E04
MENU STRUCTURE
ALARM CODES
The unit self-protects through safety devices; when any of these safety devices detect an anomaly, this is shown
in the display in order to advise the installer.
The activation of an alarm brings about:
- The display of the alarm code beginning with the letter E and follows a number; if more than one alarm will be
activated, the alarm visualized would be the one with the lowest numerical value.
- The blocking of some or all the outputs, depending on the type of alarm.
E00: This indication is not an alarm; it indicates that unit is turn off from ON /OFF remote.
VIS (Visualization): It Indicates the type of alarm shown on the display.
RE (Reset): Type of reset:
AUT: AUTOMATIC RESET: Some alarms are automatically reset. When the cause is no longer present, they
disappear from the display.
MAN: MANUAL RESET: Press ON/OFF button and release within 2 seconds. If the alarm conditions have
been removed, the instrument returns to the normal operation and the alarm relay is de-energized. If on
the other hand, the alarm conditions persist, then call for technical service.
Press the ON/OFF button until the alarm
disappears; if alarm shows up again, check
continuity and change the faulty component.
• Check refrigerant charge.
• Check the refrigerant circuit is not
blocked.
• Check connections and fuses.
• Check power supply.
MAN
VIS. RE
MAN
MAN
DESCRIPTION EFFECT ACTION
High pressure switch alarm.
This alarm may indicate the following problems:
- High pressure switch protection.
- Fuses of the fan burnt out.
Press the ON/OFF button, until the alarm
disappears; if the alarm shows up again,
check:
• Coil clean and no blocked.
• Water flow on the heating cycle.
• Check fuses of the fan.
• Outside temperatures very high.
• Check refrigerant charge.
Low pressure switch alarm.
This alarm may indicate the following problems:
- Low amount of refrigerant.
- Low water flow in cooling cycle.
- Blocked coil in heating cycle.
- Fuses of the fan burnt out.
After two automatic resets in one hour, it comes
to be a manual reset.
When this alarm shows up repeatedly, and
the alarm keeps on, make an electrical reset
and check:
• Coil clean and no blocked.
• Water flow on the cooling cycle.
• Check fuses of the fan.
• Outside temperatures very low.
• Check refrigerant charge.
Circuit 1
compressors
stop
Compressor 1
circuit 1
stops
Press the ON/OFF button until the alarm
disappears; if alarm shows up again, check
continuity and change the faulty component.
MAN
Circuit 1 Fan
and circuit 1
compressors
stop
Circuit 1
compressors
stop
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