目录.p65

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......................................................

11111 .....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:

• ---- 2222255555 - ---- 1111155555 - ---- 55555 55555 1111155555 2222255555 3333355555 4444455555 5555555555 6666655555 7777755555 8888855555

(^1111155555)
(^1111100000)
(^88888)
(^66666)
(^44444)
(^22222)
(^2222200000)
Resistance
Temperature