12a-13
CONTROL SYSTEM
Revision 0
12Α.6.2
. IFAN operation rules for RC and SH.
• As a general rule for RC and SH groups,
IFAN will be switched ON according to the following graph:
Note 1:
When ICT is faulty:
When the compressor switches from off to on (excluding deicing), IFAN will be on in
ANY speed.
When the compressor switches from on to off, the IFAN will change to low speed for 30
seconds and then it will be off.
Note 2:
Once the compressor is ON, 6 min later, excluding protection modes, IFAN will be
forced to Low until it reaches the ANY speed, and then IFAN will operate according
to items and above. This rule can be re-performed only on the next compressor
restart.
• In SH or RC group, IFAN will operate for min 30 sec , after HE’s turned
off, where in a case it has to be OFF, it will be forced to low speed.
36
17
15
40
20
ANY
LOW
OFF
IFAN
ICT
45
25
Ducted
General:
Window:
20
COMP ON
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