12a-8
CONTROL SYSTEM
Revision 0
12Α.1.7. RV Fault (comp units only)
This test is performed every time the unit is switched from OFF/STBY to OPER
in Heat mode or changes operation mode from COOL/DRY to HEAT (this
applies also in AUTO COOL/HEAT mode).
If ICT is lower than 35
0
C at the time of mode change, then at the first
occurrence of 15 min continuous COMP operation, ICT is compared with ICT
reading when the COMP was switched from OFF to ON 15 min before. RV fault
is defined when ICT decreases in more than 5
0
C.
In this case, the COMP will stop and the SB led will blink. This fault is reset after
going to SB or mode change.
12Α.1.8. Functional Mode Definitions
The following table summarized the models as they defined with accordance to
the jumper’s selection.
Model J4 J5
FLO 3 N 0 0
WNG-25 1 0
RESERVE 1 1
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