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38MBR: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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Table 16 — 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 displays a single digit and a ten digit. (For example, the
digital display tube displays “5.0” it means the capacity demand is 15. The digital display tube displays “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 degrees, the digital display tube displays “13”. If
the temp. is higher than 99 degrees, the digital display tube displays a single digit and a ten digit. (For example, if the digital
display tube displays “0.5”, it means the compressor discharge temp. is 105 degrees. 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 ten 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 ten 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 of1# 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: “--”.
30 Evaporator pipe temp. T2B of 2# indoor unit