Carrier 60 Service Manual download pdf (Page 19)

1-11

T--295

1.10.2 Electronically Communtated DC Motors with 2--speed Evaporator Input Signal (Option 2)

D30

D2 D6

D26

D17D14

EF3

CB 4

EF4

EF HIGH SIGNAL

EF6 EF5

CB 3

CB 2

EF1

CB 1

EF2

D81

CB 6

CB 5

K18

K20

K14

K16

D41D38

K22

CF3

CB 10

K24

CF4

CF HIGH SIGNAL

K23K21

CF6 CF5

K10

CF1

CB 8

CB 9

CB 7

CF2

K11

CB 13

D85

CB 11

CB 12

D51

D69

JP1

JP2

D66

D72

D63

D60

D57

K19

K13

K17

K15

D54

JP3

JP4

JP6

JP5

5 6

Figure 1-9 Relay Board (Option 2)

a Relays

K1 Energizes evaporator fans 1 & 2

K2 Energizes evaporator fans 3 & 4.

K3 Energizes evaporator fan 5.

K4 Energizes evaporator fan 6.

K5 Provides evaporator fan high output signal.

(Motors are in low speed when K5

is de--energized)

K6 Not Used

K 7 Energizes condenser fans 1 & 2.

K 8 Energizes condenser fans 3 & 4.

K 9 Energizes condenser fan 5

K10 Energizes condenser fan 6.

K13 Energizes the A/C clutch.

K14 Energizes unloader 1.

K15 Energizes unloader 2.

K16 Energizes the fresh air damper.

K17 Energizes the heat .

K18 Energizes the fault light output.

K19 Energizes the Boost Pump.

K20 Energizes the spare output.

K21 or K22 Is energized by the logic board to

turn the evaporator fans on. The contacts

of these relays energize the coils of relays K1,

K2, K3 & K4.

K23 or K24 Is energized by the logic board to

turn the condenser fans on high. The contacts

of these relays energize the coils of relays K7,

K8, K9 & K10.

b Thermal Circuit Breakers

Refer to paragraph 1.10.1b.

c. Connectors

Refer to paragraph 1.10.1c.

EF HIGH SIGNAL Output to the evaporator fans

to operate on high.

CF HIGH SIGNAL Output to the condenser fans

to operate on high.

d. LEDS

Refer to paragraph 1.10.1d.

D81 Evaporator fans on high

D85 Condenser fans on high

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 55 56

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