14
ALARM CODES
The unit self-protects through safety devices, when any of these safety devices detect an anomaly, it is shown in
the display in order to advise the installer.
The activation of an alarm brings about:
- The display of the alarm code and the letters "AL", alternating with the display of the temperature
- The blocking of some or all the outputs, depending on the type of alarm.
When more than one alarm is activated at the same time, the display automatically scrolls through the active alarms.
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:
Pressing RESUME button, for more than 5 seconds or set the unit on OFF mode and
then set on ON mode again.
If the alarm conditions have been removed, the instrument returns to the normal operation and the alarm relay is
de-energised. If on the other hand, the alarm conditions persist, then call for technical service.
The centre of the board also houses a jumper J3, which must be set on the position shown in the electrical
diagram supplied with the unit (between ID COM and INT).
When the jumper is positioned in any other position, the display shows several alarms; therefore check this jumper
when this is repeated.
DESCRIPTION
This alarm may indicate the following problems:
- High pressure switch protection.
- Compressor internal protection open.
- Outdoor fan internal protection open.
- Low pressure switch protection.
Indicates that unit is working at indoor temperatures
higher than 32ºC, or ambient probe is faulty.
VIS.
E ID
HI T
LO T
RE
MAN
HR F
MAN
The number of operating hours of the supply fan
exceeds the maintenance threshold set by parameter
F4.
th f
Indoor fan protection open or disconnected.
ES R Terminal does not receive data communication from
the power board.
ES T Power board does not receive data communication from
the terminal
E 1
Temperature regulation probe error, or connection cable
broken.
E 3
Outdoor coil temperature probe error, or connection
cable broken.
MAN
AUT
AUT
AUT
AUT
EFFECTS
ACTION
Alarm
visualization
Alarm
visualization
The unit can operate in this situation only for short
periods of time. If this situation remains, check or
change the probe and correct hot air stratification,
inlet outside cold air etc...
These protections are manual reset. Set the unit on
OFF mode and then set on ON mode again through
the terminal. If the alarm shows up again check
continuity of the protections and check or change
the faulty component.
Indicates that unit is working at indoor temperatures
lower than 10ºC, or ambient probe is faulty.
Turn off power supply and turn on again.
If the problem persists, must proceed to change
components.
NOTE: This alarm could be caused by a faulty
shielded cable connection (induction) or be too long.
Check probe connections and check the cable.
Unit will stop
Unit will stop
Unit will stop
Unit will stop
Unit will stop
Check the position of jumper J1, shown on page 15,
check the cable.
This protection is manual reset. Press the "RESUME"
button for 5 seconds, until alarm disappear. If the
alarm shows up again check continuity of the
protection and check or change the faulty component.
Air filter should be changed and reset parameter F3
(reset to 0 valve), press simultaneously the "set"
button, with and front buttons
EE
EPROM error.
E 2
Outdoor temperature probe error, or connection cable
broken. (freecooling option, heat pump).
AUT
Unit will stop
Check the outdoor probe connection and jumpers
situation according to the electrical wiring diagram.
