Carrier 38MBR series - Page 21

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DIAGNOSIS AND SOLUTION (CONT)
Table 12—Outdoor Check Function
N DISPLAY REMARK
00 Normal display Display running frequency, running state or malfunction code
01 Indoor unit capacity demand code
Actual data*HP*10
If the capacity demand code is higher than 99, the digital display tube will
display a single digit and tens digit. (For example, the digital display tube
displays “5.0”,it means the capacity demand is 15. The digital display
tube show “60”,it means the capacity demand is 6.0)
02 Amendatory capacity demand code
03 The frequency after the capacity requirement transfer
04 The frequency after the frequency limit
05 The frequency of sending to 341 chip
06
Indoor unit evaporator outlet temp.(heating T2，cooling
T2B)
If the temp. is lower than 0 degree, the digital display tube displays “0”. If
the temp. is higher than 70 degree, the digital display tube displays “70”.
07 Condenser pipe temp.(T3)
If the temp. is lower than -9 degree, the digital display tube displays
“-9”.If the temp. is higher than 70 degree, the digital display tube
displays “70”. If the indoor unit is not connected, the digital display tube
displays: “--”
08 Outdoor ambient temp.(T4)
09 Compressor discharge temp.(T5)
The display value is between 13~129 degree. If the temp. is lower than
13 degree, the digital display tube displays “13”. If the temp. is higher
than 99 degree, the digital display tube displays a single digit and a tens
digit. (For example, if the digital display tube displays “0.5”,it means the
compressor discharge temp. is 105 degree. If the digital display tube
displays “1.6”,it means the compressor discharge temp. is 116 degrees).
10 AD value of current
The display value is a hex number.
11 AD value of voltage
12 Indoor unit running mode code Off:0, Fan only 1,Cooling:2, Heating:3
13 Outdoor unit running mode code Off:0, Fan only 1,Cooling:2, Heating:3, Forced cooling:4
14 EXV open angle
Actual data/4.
If the value is higher than 99, the digital display tube displays a single digit
and a tens digit.
For example, if the digital display tube displays “2.0”,it means the EXV
open angle is 120×4=480p.).
15 Frequency limit symbol
Bit7
Frequency limit caused by IGBT
radiator
The display value is a
hex number. For ex.,
the digital display tube
displays 2A, then
Bit5=1, Bit3=1, Bit1=1.
It represents the
frequency limit caused
by T4, T3 and current.
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
16 DC fan motor speed
17 IGBT radiator temp.
The display value is between 30~120 degrees. If the temp. is lower than
30 degrees, the digital display tube displays “30”.If the temp. is higher
than 99 degrees, the digital display tube displays a single digit and a tens
digit. (For example, if the digital display tube displays “0.5”,it means the
IGBT radiator temp. is 105 degrees. If the digital display tube displays
“1.6”, it means the IGBT radiator temp. is 116 degrees).
18 Indoor unit number
The indoor unit can communicate well with the outdoor unit.
General:1, Twins:2
19 Evaporator pipe temp. T2 of 1# indoor unit
If the temp. is lower than 0 degree, the digital display tube displays “0”.If
the temp. is higher than 70 degrees, the digital display tube displays “70”.
If the indoor unit is not connected, the digital display tube displays: “--”.
20 Evaporator pipe temp. T2 of 2# indoor unit
21 Evaporator pipe temp. T2 of 3# indoor unit
22 1# Indoor unit capacity demand code
Actual data*HP*10
If the capacity demand code is higher than 99, the digital display tube
displays a single digit and a tens digit. (For example, the digital display
tube displays “5.0”,it means the capacity demand is 15. If the digital
display tube displays “60”,it means the capacity demand is 6.0). If the
indoor unit is not connected, the digital display tube displays: “--”.
23 2# Indoor unit capacity demand code
24 3# Indoor unit capacity demand code
25 Room temp. T1 of 1# indoor unit
If the temp. is lower than 0 degree, the digital display tube displays “0”.If
the temp. is higher than 70 degrees, the digital display tube displays “70”.
If the indoor unit is not connected, the digital display tube displays: “--”.
26 Room temp. T1 of 2# indoor unit
27 Average room temp. T1
28 Reason of stop
29 Evaporator pipe temp. T2B of 1# indoor unit
If the temp. is lower than 0 degree, the digital display tube displays “0”.If
the temp. is higher than 70 degrees, the digital display tube displays “70”.
If the indoor unit is not connected, the digital display tube displays: “--”.