Fisher FS2MIF-141AE2, Service Manual

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8.4 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 Remark
0 Normal display Display running frequency, running state or malfunction code
1 No. of indoor units in good connection Actual data
2 Outdoor unit running mode code Standby:0,Fan only 1, Cooling:2, Heating:3, Forced cooling:4 Forced
defrosting:5
3 A indoor unit capacity
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)
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
Norm value*HP
(7K:0.8HP, 9K:1HP,12K:1.2HP,18K:1.5HP)
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
13 Total indoor units amendatory capacity
demand code
14 The frequency corresponding to the total
indoor units amendatory capacity demand
15 The frequency after the frequency limit
16 The frequency sending to compressor
control chip
17 A indoor unit evaporator outlet temp.(T
2B
A)
If the temp. is lower than -9 degree, the digital display tube will show
“-9”.If the temp. is higher than 70 degree, the digital display tube will
show “70”. If the indoor unit is not connected, the digital display tube
will show: “
―― ”
18 B indoor unit evaporator outlet temp.(T
2B
B)
19 C indoor unit evaporator outlet temp.(T
2B
C)
20 D indoor unit evaporator outlet temp.(T
2B
D)
21 E indoor unit evaporator outlet temp.(T
2B
E)
22 A indoor unit room temp.(T
1
A) If the temp. is lower than 0 degree, the digital display tube will show
“0”.If the temp. is higher than 70 degree, the digital display tube will
show “70”. If the indoor unit is not connected, the digital display tube
will show: “
―― ”
23 B indoor unit room temp.(T
1
B)
24 C indoor unit room temp.(T
1
C)
25 D indoor unit room temp.(T
1
D)
26 E indoor unit room temp.(T
1
E)
27 A indoor unit evaporator temp.(T
2
A)
If the temp. is lower than -9 degree, the digital display tube will show
“-9”.If the temp. is higher than 70 degree, the digital display tube will
show “70”. If the indoor unit is not connected, the digital display tube
will show: “
―― ”
28 B indoor unit evaporator temp.(T
2
B)
29 C indoor unit evaporator temp.(T
2
C)
30 D indoor unit evaporator temp.(T
2
D)
31 E indoor unit evaporator temp.(T
2
E)
32 Condenser pipe temp.(T3)
33 Outdoor ambient temp.(T4)
34 Compressor discharge temp.(T5) 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.)
35 AD value of current
The display value is hex number.