Air conditioner--Air conditioning system
If resistance does not accord with the regulation, it is necessary to change heat sensitive resistance.
If the function does not accord with the regulation, it is
necessary to change pressure switch.
(b) Control for cooling fan:
Check the function of pressure switch.
(1) Connect the anode lead of OUM meter to No. 2 termi-
nal and connect cathode lead to No. 3 terminal.
(2) Liking that shown in left figure. When refrigerant pres-
sure is changed, check the conduction between
terminals.
If the function does not accord with the regulation, it is
necessary to change pressure switch.
Inspection
11
11
1
..
..
. No.1 thermal resistor
(a) Check the resistance between No.1 terminal and No.2 ter-
minal of No.1 heat sensitive resistance at different
temperatures, liking that shown in figure.
Conduc-
tion
Not conduc-
tion
214
Resistance:
--
--
-
22
22
2
55
55
5
--
--
-
11
11
1
55
55
5
--
--
-
55
55
5
55
55
5
11
11
1
55
55
5
22
22
2
55
55
5
33
33
3
55
55
5
44
44
4
55
55
5
55
55
5
55
55
5
66
66
6
55
55
5
77
77
7
55
55
5
88
88
8
55
55
5
11
11
1
55
55
5
11
11
1
00
00
0
88
88
8
66
66
6
44
44
4
22
22
2
22
22
2
00
00
0
Resistance
Temperature
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