ELECTRONIC CONTROL FOR TERMINAL UNITS
10
I.2.4.1 Alarms
If an alarm is present due to a fault that prevents the appliance from
operating, the lighting of the LEDs allows to determine the type of
alarm. In the event of more than one alarm, the alarm with the highest
priority is displayed. Alarm reset is automatic.
N
DL1
(green)
DL2
(yellow)
DL3
(red)
Meaning Priority
- OFF OFF OFF None -
01 OFF OFF BLINK
Probe ST1 faulty
(ambient air
probe)
1
02 OFF BLINK OFF
Defective ST2
probe
(water probe) (*)
2
03 BLINK BLINK OFF Fan 3
04 ON BLINK BLINK
Generic alarm
(hot start, too
cool, EC fan
waiting time after
mode change)
4
ON: on BLINK: flashing
Note: OFF from digital input is not displayed.
(*) in case of failure of the water probe, operation is guaranteed with the
Hot Start and Too Cool functions disabled.
I.2.5 RECEIVER ON OVERLAY FOR DIVA (KRLTI-
KRLTM)
For ceiling-mounted cassette units there are two receivers to be fixed
near the ceiling:
o
KRLTI for plastic plafonding
o
KRLTMI for metal plafonding
On both there are no LEDs to indicate the active mode of operation.
In order for the receiver to communicate with the unit board an
additional board is required, the housing of which is provided inside the
electrical box.
On this board the red LED is flashing (the other two are off).
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