Carrier 42QHF009DS Service Manual page 41

11.4 Outdoor unit point check function
There is a check switch in outdoor PCB.
Press the switch N times it will display the content corresponding to No. N. After getting into the check function, it
will display No. N with 1.5s, meanwhile the low bit decimal of digit display flashing, indicated to get into the check
function display. After 1.5s, it will display the content corresponding to No. N.
the digital display tube will display the follow procedure when push SW1 each time.
Display
0 Normal display
1 No. of indoor units in good connection
2 Outdoor unit running mode code
3 A indoor unit capacity
4 B indoor unit capacity
5 C indoor unit capacity
6 D indoor unit capacity
7 E indoor unit capacity
8 A Indoor unit capacity demand code
9 B Indoor unit capacity demand code
10 C Indoor unit capacity demand code
11 D Indoor unit capacity demand code
12 E Indoor unit capacity demand code
Total indoor units amendatory capacity
13
demand code
The frequency corresponding to the total
14
indoor units amendatory capacity demand
15 The frequency after the frequency limit
The frequency sending to compressor
16
control chip
17 A indoor unit evaporator outlet temp.(T
18 B indoor unit evaporator outlet temp.(T
19 C indoor unit evaporator outlet temp.(T
20 D indoor unit evaporator outlet temp.(T
21 E indoor unit evaporator outlet temp.(T
22 A indoor unit room temp.(T
23 B indoor unit room temp.(T
24 C indoor unit room temp.(T
25 D indoor unit room temp.(T
26 E indoor unit room temp.(T
27 A indoor unit evaporator temp.(T
28 B indoor unit evaporator temp.(T
29 C indoor unit evaporator temp.(T
30 D indoor unit evaporator temp.(T
31 E indoor unit evaporator temp.(T
32 Condenser pipe temp.(T3)
33 Outdoor ambient temp.(T4)
34 Compressor discharge temp.(T5)
35 AD value of current
36 AD value of voltage
Remark
Display running frequency, running state or malfunction code
Actual data
Off:0,Fan only 1, Cooling:2, Heating:3, Forced cooling:4
The capacity unit is horse power. If the indoor unit is not connected,
the digital display tube will show: "――"
(7K:0.8HP, 9K:1HP,12K:1.2HP,18K:1.5HP)
Norm value*HP
(7K:0.8HP, 9K:1HP,12K:1.2HP,18K:1.5HP)
Forced cooling:7
A)
2B
B)
If the temp. is lower than -9 degree, the digital display tube will show
2B
"-9".If the temp. is higher than 70 degree, the digital display tube will
C)
2B show "70". If the indoor unit is not connected, the digital display tube
will show: "――"
D)
2B
E)
2B
A)
1
B)
If the temp. is lower than 0 degree, the digital display tube will show
1
"0".If the temp. is higher than 50 degree, the digital display tube will
C)
1 show "50". If the indoor unit is not connected, the digital display tube
will show: "――"
D)
1
E)
1
A)
2
B)
2
C)
If the temp. is lower than -9 degree, the digital display tube will show
2
"-9".If the temp. is higher than 70 degree, the digital display tube will
D)
2 show "70". If the indoor unit is not connected, the digital display tube
will show: "――"
E)
2
The display value is between 30~129 degree. If the temp. is lower
than 30 degree, the digital display tube will show "30".If the temp. is
higher than 99 degree, the digital display tube will show single digit
and tens digit. For example, the digital display tube show "0.5",it
means the compressor discharge temp. is 105 degree.)
The display value is hex number.
For example, the digital display tube shows "Cd", it means AD value
is 205.
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