7. FUNCTION
7-1 Diagnostic
With this feature is possible to have a visual signal that a trouble is occurring.
This mode is always active and the signalling is made through the display board LEDS .
In case of no troubles the LEDS status follows its normal function.
The detected troubles are showed to the user/technician using the 3 or 5 leds of the indoor unit receiver
and the 5 leds on the outdoor pcb. For each fault there are different effects upon the operation of the A/C:
NOTES
The troubles are showed according to a priority list that is in case of more than one trouble present,
is always showed, at first, the one with the highest priority (3 2
1 etc).
Sensor damaged means a situation where sensor is short-circuited or opened.
In case of damaged sensors, the system (CM, FMO, FMI etc), if in OFF state, does not start.
system does not operate. To re-start the system,
power re-setting (off-on) is required
note: before restoring power, adjust the dip-switch
status on idu according to the connection pipes
system does not operate.
as soon as fault is cleared, the system
automatically restart after 3 min.
during this time, the signalling is showed
EFFECTS
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