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—24—

—24—

—24—

Check voltage at outlet. Correct if none.

Check voltage to rotary switch. If none, check
power supply cord. Replace cord if circuit is open.

Check switch continuity. Refer to wiring diagram
for terminal identification. Replace switch if none
defective.

Connect wire. Refer to wiring diagram for terminal
identification. Repair or replace loose terminal.

Test capacitor.
Replace if not within ±10% of manufacturer's
rating. Replace if shorted, open, or damaged.

Fan blade hitting shroud or blower wheel hitting
scroll. Realign assembly.

Units using slinger ring condenser fans must
have 

2

/

9

to 

1

/

4

inch clearance to the base. If it is

the base, shim up the bottom of the fan
motor with mounting screw(s).

Check fan motor bearings; if motor shaft will not
rotate, replace the motor.

Check voltage. See limits on this page. If not within
limits, call an electrician.

Test capacitor.
Check bearings. Does the fan blade rotate freely.
If not, replace fan motor.

Pay attention to any change from high speed to
low speed. If the speed does not change, replace
the motor.

No power

Power supply cord

Rotary switch

Wire disconnected or
connection loose

Capacitor (Discharge
capacitor before testing.)

Will not rotate

Revolves on overload.

Fan motor will not run.

Fan motor runs.

115V

103.5V

126.5V

220V ~ 240V

198V

264V

110V

99V

121V

—25—

If cracked, out of balance, or partially missing,
replace it.

If cracked, out of balance, or partially missing,
replace it.

Tighten it.

If knocking sounds continue when running or loose,
replace the motor. If the motor hums or noise
appears to be internal while running, replace motor.

Check voltage. See the limits on the preceding page.
If not within limits, call an electrician.

Check the wire connections ; if loose, repair or
replace the terminal. If the wires are disconnected,
refer to wiring diagram for identification, and replace
the wires. Check the wire connections ; if not
according to the wiring diagram, correct the
connections.

Check for continuity, refer to the wiring diagram for
terminal identification. Replace the switch if the
circuit is open.

Check the position of knob. If not at the coldest
setting, advance the knob to this setting and restart
the unit.

Check the continuity of the thermostat. Replace the
thermostat if the circuit is open.

Check the capacitor.
Replace if not within ±10% of manufacturer's rating,
replace if shorted, open, or damaged.

Check the compressor for open circuit or graond. If
open or grounded, replace the compressor.

Check the compressor overload if externally
mounted.
Replace if open. (If the compressor temperature is
high, remove the overload, cool and retest.)

Check the voltage. See the limits on the preceding
page. If voltage is not within these limits, call an
electrician.

Check overload, if externally mounted.
Replace if open. (If the compressor temperature is
high, remove the overload, cool, and retest.)

Fan

Blower

Loose set screw

Worn bearings

Voltage

Wiring

Rotary

Thermostat

Capacitor (Discharge
capacitor before
servicing.)

Compressor

Overload

Voltage

Overload

Fan motor noise.

Compressor will not run,
fan motor runs.

Compressor cycles on
overload.

—27—

MOTOR

COMP

WIRING DIAGRAM

3854AR3552E

POWER INPUT

ROTARY SWITCH

BK(BR)

WH(BL)

(Ribbed)

(Plain)

GN(GN/YL)

H

BK

RD

BL

BL

BK

BK

BK

BK

RD

RD

BL

BK

RD

BL

BK

RD

BL

YL

YL

L

M

OR(BR)

OR(BR)

T/BLOCK

OR

THERMOST

A

T

CAPACITOR

F

C

C

H

BR

R

S

C

OLP

P.T.C

MODE

SWITCH

WH

WH

1

2

3

1

2

3

4

5

6

7

8

1 

2

12

10

13

9

3

4

11

16
15

5

14

6

7 8

17

S: Service Parts
O: Non Service Parts

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

POWER CORD ASS'Y

MOTOR ASS'Y

COMPRESSOR

ROTARY SWITCH

THERMOSTAT

CAPACITOR, SH

CONNECTOR ASS'Y (FOR COMP)

CONNECTOR ASS'Y (COMP)

CONNECTOR ASS'Y (FOR MOTOR)

T/BLOCK

OVERLOAD PROTECTOR

CONDUCTOR

CONDUCTOR

CONDUCTOR

CONDUCTOR

ROCKER SWITCH

(PTC)

2H00677R

4681A20010A

5416A20004A

2H00154H

2H01109H

6120AR2359S

6631AR2667H

6631AR2668F

6877A20001C

3H00390B

6750U-L030A

6862AR2348D

6862AR2348G

6862AR2348E

6862AR2348F

2H01316C

(2C00147B)

—28—

2H00677R

4681A20010A

5614A20004A

2H00154H

2H01109H

6120AR2359S

6631AR2667H

6631AR2668F

6877A20001C

6750U-L030A

6862AR2187K

(2C00147B)

POWER CORD ASS'Y

MOTOR ASS'Y

COMPRESSOR

ROTARY SWITCH

THERMOSTAT

CAPACITOR, SH

CONNECTOR ASS'Y (FOR COMP)

CONNECTOR ASS'Y (COMP)

CONNECTOR ASS'Y (FOR MOTOR)

OVERLOAD PROTECTOR

CONDUCTOR

(PTC)

1

2

3

4

5

6

7

8

9

10

11

12

1

1

1

1

1

1

1

1

1

1

1

1

S

S

S

S

S

S

S

S

S

S

S

S

3854AR3552D

WIRING DIAGRAM

COMP

MOTOR

THERMOSTAT

CAPACITOR

ROTARY SWITCH

POWER INPUT

1

2

3

4

5

6

7

8

  

F

C

H

H

BK

RD

BL

BK

RD

BL

L

M

OR(BR)

OR(BR)

YL

YL

BR

R

S

C

BR

OLP

BK

RD

BL

BK

BK

RD

RD

BL

P.T.C

BK(BR)

(Plain)

WH(BL)

(Ribbed)

GN(GN/YL)

1 

2

9

3

4

5

11

6

12

10

8

7

S: Service Parts
O: Non Service Parts