13
ALARM CODES
TERMINAL
The detection of an alarm brings the display of the alarm code and the letters AL, alternating with the display
of the temperature.
When more than one alarm is detected at the same time, the display automatically scrolls through the
occurred alarms.
CODE
SIGNAL
DESCRIPTION
EFFECT
RESET
HR F
Supply fan maintenance alarm (filter clean)
When the indoor unit fan has exceeded the number of operating hours specified by parameter F4 (factory setting F4=0)
the maintenance message HR F is displayed
Only alarm indication, unit does not stop
To reset, the operating hour-counter must be set to zero parameter F3
Press [SET] + [HOLD] buttons
The display shows parameter values
Using the buttons get the parameter F3
Press [SET] button to confirm and with the buttons change the value to 0
CODE
SIGNAL
DESCRIPTION
EFFECT
RESET
HI T
High temperature alarm
Indoor temperature has rise above 32ºC during 10 minutes
Only alarm indication, unit does not stop
Unit would operate on these conditions only for short periods of time
Press RESUME button for more than 5 seconds
CHECK POINTS - Sensor values (relationship temperature-resistance), sensor position, and air distribution.
- Check parameter S4 (factory setting S4=0).
S4= allow the correction of the value measured by ambient temperature sensor.
CODE
SIGNAL
DESCRIPTION
EFFECT
RESET
LO T
Low temperature alarm
Indoor temperature has falls bellow 10ºC during 10 minutes
Only alarm indication, unit does not stop
Unit would operate on these conditions only for short periods of time
Press RESUME button for more than 5 seconds
CHECK POINTS - Sensor values (relationship temperature-resistance), sensor position, and air distribution.
- Check parameter S4 (factory setting S4=0).
S4= allow the correction of the value measured by ambient temperature sensor.
CODE
SIGNAL
DESCRIPTION
EFFECT
RESET
th F
External alarm from indoor fan internal protection open:
COMPACTAIR (F15) / COMPACTAIR 100D (F17)
AIRCOOLAIR (F15) / AIRCOOLAIR From 100D (F37)
When digital input ID1 is opened the alarm message th F is displayed
Alarm indication and all the outputs are switched off
Press RESUME button for more than 5 seconds when the cause that generated the alarm is reset
CHECK POINTS 1. Power board operation:
- Do a shortcut connection between GND and ID1 on pcb. With this action a by pass for the protection line is done.
- If the alarm disappears and the control operates, the problem must be the protection components (go to point 2).
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If the alarm does not disappear, power board is defective.
2. Check continuity, loose connections and verify that indoor fan motor operating current is within values..
When the unit is on mode OFF, sensor alarms are detected only.
POWER BOARD
On centre of power board is located
jumper J3,
which should be in position
1-2 (INT - ID COM)
The power board also features a signalling
green LED
, which provides information:
- 1 flash
every 3 seconds: normal operation.
- 2 flashes
every
3 seconds: serial communication error (ALARM CODE
EST
); the power board is not receiving the data sent by
the terminal.
- 3 flashes
every
3 seconds: serial communication error (ALARM CODE
ESR
); the terminal is not receiving the data sent by the
power board.
CODE
SIGNAL
DESCRIPTION
EFFECT
RESET
HR 1 HR 2
Compressor 1 and 2 maintenance alarm
When the compressor has exceeded the number of operating hours specified by parameter C7 (factory setting C7=0)
the maintenance message HR 1 - HR 2 is displayed.
Only alarm indication, unit does not stop
To reset, the operating hour-counter must be set to zero parameter C5 / C6
Press [SET] + [HOLD] buttons
The display shows parameter values
Using the buttons get the parameter C5 / C6 (compressor 1 / compressor 2)
Press [SET] button to confirm and with the buttons change the value to 0
