Carrier 42QHF009DS Service Manual page 42

37 EXV open angle for A indoor unit
38 EXV open angle for B indoor unit
39 EXV open angle for C indoor unit
40 EXV open angle for D indoor unit
41 EXV open angle for E indoor unit
42 Frequency limit symbol
43 Average value of T2
44 Outdoor unit fan motor state
45 The last error or protection code
The following items from 11.4.1 to 11.4.5 are for the explanation of the point check functions.
11.4.1 Frequency of compressor:
11.4.2 Running mode:
11.4.3 Capacity demand:
Cooling mode
Capacity area
Norm value (N)
Heating mode
Actual data/4.
If the value is higher than 99, the digital display tube will show single
digit and tens digit.
For example, the digital display tube show "2.0", it means the EXV
open angle is 120×4=480p.)
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
(Sum T2 value of all indoor units)/( number of indoor units in good
connection)
Off:0, High speed:1, Med speed:2, Low speed:3 Breeze:4, Super
breeze:5
00 means no malfunction and protection
Display Frequency of compressor (Hz)
30 30
-- Stand by
60 60
Display Corresponding mode
0 Off
1 Fan only
2 Cooling mode
3 Heating mode
4 Forced cooling
T1 Ts
a
3
b
c
2
1 d
0
e
1
f
a
3
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Frequency limit caused by IGBT
radiator
Frequency limit caused by PFC
Frequency limit caused by T4.
Frequency limit caused by T2.
Frequency limit caused by T3.
Frequency limit caused by T5.
Frequency limit caused by current
Frequency limit caused by voltage
4
3
2
1
0
b c d
2 1.5 1
The display value
is hex number. For
example, the
digital display tube
show 2A,then
Bit5=1, Bit3=1,
Bit1=1.
It means
frequency limit
caused by T4,T3
and current.
e f
0.5 0