Carrier 38MBR series Service Manual page 17

Defrosting Mode
If any one of the following conditions are met, AC will enter the
defrosting mode. After the compressor starts and continues to run,
mark the minimum value of T3 from the 10th minute to 15th
minute as T30.
S
If the compressor cumulate running time is up to 29
minutes and T3< TCDI1, T3+T30SUBT3ONE≦T30.
S
If the compressor cumulate running time is up to 35
minutes and T3< TCDI2, T3+T30SUBT3TWO≦T30.
S
If the compressor cumulate running time is up to 29
minutes and T3< TCDI3 for 3 minutes.
S
If the compressor cumulate running time is up to 120
minutes and T3<5 F(−15
°
Condition of Ending Defrosting:
If any one of the following items is satisfied, the defrosting mode
completes and the machine enters the normal Heating mode.
S
T3 rises to be higher than TCDE1.
S
T3 keeps to be higher than TCDE2 for 80 seconds.
Defrosting Action:
−−−−The machine has run for 10 minutes in defrosting mode.
T2
TEstop
TEdown
TEH2
Fig. 14 – Defrosting Action
ENQUIRY INFO
T1,T2,T3,T4,T2B,TP ,TH,
Targeted Frequency,
Actual Frequency
Indoor Fan Speed/
Outdoor Fan Speed
EXV Opening Angle
Compressor Continuous
Running Time
Compressor Stop Causes
).
° C
Off
Decrease
Hold
Resume
Table 9—Enquiry Information
DISPLAY VALUE
-1F,-1E,-1d,-1c,-1b,-1A
-19—99
A0,A1,0A9
b0,b1,0b9
c0,c1,0c9
d0,d1,0d9
E0,E1,0E9
F0,F1,0F9
0
1,2,3,4
14-FF
0-FF
0-FF
0-99
Point Check Function
Press the remote controller LED DISPLAY or LED or MUTE
button three times, and then press the AIR DIRECTION or
SWING button three times in ten seconds (the buzzer rings for two
seconds). The air conditioner enters the information enquiry status.
The user can press the LED DISPLAY or AIR DIRECTION
button to check the next or front item's information. When the air
conditioner enters the enquiry information status, it displays the
code name in 2 seconds. Refer to Table 8 for details.
Table 8—Enquiry Information
ENQUIRY INFO
T1
T2
T3
T4
T2B
TP
TH
Targeted Frequency
Actual Frequency
Indoor Fan Speed
Outdoor Fan Speed
EXV Opening Angle
Compressor
Continuous Running
Time
Compressor Stop
Issues
When the air conditioner enters the information enquiry status, the
LED displays the code value within 25 seconds (see Table 9).
MEANING
-25,-24,-23,-22,-21,-20
-19—99
100,101,0109
110,111,0119
120,121,0129
130,131,0139
140,141,0149
150,151,0159
OFF
Low speed, Medium speed,
High speed, Turbo
Actual fan speed = Display value
turns to decimal value and then
multiply 10. The unit is RPM.
Actual EXV opening value =
Display value turns to decimal
value and then multiply 2.
0-255 minutes
For the detailed meaning, please
consult with engineer
17
DISPLAYING
MEANING
CODE
T1 T1 temp.
T2 T2 temp.
T3 T3 temp.
T4 T4 temp.
Tb T2B temp.
TP TP temp.
TH TH temp.
FT Targeted Frequency
Fr Actual Frequency
IF Indoor Fan Speed
OF Outdoor Fan Speed
LA EXV Opening Angle
Compressor
CT Continuous Running
Time
Compressor Stop
ST
Issues
REMARK
1. The displaying temperature is the
actual value.
2. Temp. is ° C no matter the remote.
3. T1,T2,T3,T4,T2B display range:
-25~70.
4. Freq. display range: 0~159HZ.
5. If the actual value exceeds the
range, it displays the maximum value
or minimum value.
For some big capacity motors.
For some small capacity motors, the
display value is from 14-FF
(hexadecimal), the corresponding fan
speed range is from 200-2550 RPM.
If the actual value exceeds the range, it
displays the maximum value or
minimum value.
Decimal display