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—24—

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 preceeding
page. If not within limits, call an electrician.

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

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

Check the position of knob If not at the coldest
setting, advance the knob to this setting and
restart unit.
Check continuity of the thermostat. Replace
thermostat if circuit is open.

Check the capacitor.
Replace if not within ±10% of manufacturers
rating. Replace if shorted, open, or damaged.

Check the compressor for open circuit or ground. 
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 it,
and retest.)

Check the voltage.
If not within 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 clamper

Worn bearings

Voltage

Wiring

Rotary

Thermostat

Capacitor (Discharge
capacitor before servicing.) 

Compressor

Overload

Voltage

Overload

Fan motor noise.

Compressor will not run,
but fan motor runs.

Compressor cycles on
overload.

—26—

1

POWER CORD

3H02255E/2H01580M

1

2

ROTARY SWITCH

2H00598F

1

3

FAN MOTOR

4681A20027G

1

4

CAPACITOR

6120AR2194A

1

5

LAMP

3H02488C

1

6

THERMOSTAT

2H01127B

1

7

COMPRESSOR

5416A20017A

1

8

OVERLOAD PROTECTOR

6750V-L014A

1

9

TERMINAL BLOCK

3H00390A

1

10

REVERSING COIL ASS'Y

3A02028Z

1

11

DEICER P.C.B ASS'Y

6871A20083A

1

12

THERMISTOR ASS'Y

3Q35015N

1

MOTOR

COMP.

WIRING DIAGRAM

3854AR3629E

1

2

4

6

8

7

H

L

C

F

C

H

L3

L2

L1

DEICER

PWB ASSY

BK(BR)

(Plain)

WH(BL)

(Ribbed)

WH

WH

BL

BL

BL

BL

BL

BL

BL

BK

BK

BK

BK

BK

R

S

C

BK

BK(RD)

BK(RD)

BK

BK

RD

RD

RD

RD

YL

YL

YL

YL

OR

OR

OR

R/SWITCH

BR

BR

O.L.P.

T/B 2

THERMISTOR

THERMOST

A

T

BL

BK

BK

LAMP

BK

BR

T/B 1

CAPACITOR

REVERSING COIL

12

11

4

5

7

10

1

2

6

8

9

3

—27—

WIRING DIAGRAM

3854A20003L

.

CN-DISP 2

CN-

SYNC

CN-DISP 1

R

Y

-L

R

Y

-H

BR

BR

FUSE

250V T2A

3

4

BK(RD)

OLP

BK(RD)

BK

BK

REVERSING COIL

CN-4WAY

R

Y-4W

A

Y

8

7

6

11

10

1

2

3

5

4

9

1

POWER CORD

3H02255E/2H01580M

1

2

FAN MOTOR

4681A20027G

1

3

CAPACITOR

6120AR2194A

1

4

OVERLOAD PROTECTOR

6750V-L014A

1

5

COMPRESSOR

5416A20017A

1

6

PWB(PCB) ASS'Y, MAIN

6871A20061R

1

7

PWB(PCB) ASS'Y, DISPLAY

6871A30017C

1

8

THERMISTOR ASS'Y

6323AQ2333F

1

9

CONNECTOR

6631AQ3201B

1

10

FUSE

6900AQ9028H

1

11

REVERSING COIL ASS'Y

3A02028Z

1

—28—

CN-TH

C04D

D01D

C01D

C02A

C02D

IC01A

0SC01B

D05D

R

Y1 JQ1C

CN-PO

WER

R02D

R01D

ZNR

1

3

5

PWB:

 6870A90031A

PWB ASSY

:

6871A20083

J01