MrCool DIY-MULTI2-18HP230C, Service Manual

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 Troubleshooting 17 
45
Frequency limit symbol
Bit7
Frequency limit caused by
IGBT radiator The display value is a
hexidecimal number.
For example, the
digital display show
2A, then Bit5=1,
Bit3=1, and Bit1=1.
This means that a
frequency limit may be
caused by current, IPM
or T3.
Bit6 Frequency limit caused by PFC
Bit5 Frequency limit caused by T4.
Bit4 Frequency limit caused by T2.
Bit3 Frequency limit caused by T3.
Bit2 Frequency limit caused by T5.
Bit1
Frequency limit caused by
current
Bit0
Frequency limit caused by
voltage
46 T2B fault
00:No fault,01:T2B-A fault, ,02:T2B-B fault ,03:T2B-C
fault,04:T2B-D fault, 05:T2B-E fault, 06:T2B-F fault(The display
priority is A-B-C-D-E-F)
47
Average value of T2
(Sum T2 value of all indoor units)/(number of indoor units in
good connection)( The heating is the average value of T2, and
the cooling is the average value of T2B)
48
Outdoor unit fan motor state
Off: 0, Super ultra high speed:1, Super high speed:2, High
speed:3, Med speed: 4, Low speed: 5, Breeze:6, Super breeze:
7
49 Reason of stop