PROBLEM

PROBABLE CAUSE

CORRECTION

 

Condensing unit runs,

1.OVERLOAD PROTECTOR.

1.SEE PROBLEM # 3.

 

 

but short cycles on:

2.THERMOSTAT.

2.DIFFERENTIAL MUST BE WIDENED.

 

 

3.HIGH PRESSURE CUT-OUT DUE TO:

3.

 

 

 

 

(a) INSUFFICIENT AIR SUPPLY.

(a) CHECK AIR SUPPLY TO CONDENSER.

 

 

(b) OVERCHARGE.

(b) EVACUATE AND RE-CHARGE.

 

 

(c) AIR IN SYSTEM.

(c) EVACUATE AND RE-CHARGE.

 

 

4.LOW PRESSURE CUT-OUT DUE TO:

4.

 

 

 

 

(a) VALVE LEAK.

(a) REPLACE, EVACUATE AND RE-

 

 

 

CHARGE.

 

 

 

 

(b) UNDERCHARGE.

(b) EVACUATE AND RE-CHARGE.

 

 

(c) RESTRICTION IN EXPANSION DEVICE.

(c) REPLACE EXPANSION DEVICE.

 

Condensing unit runs,

1.SHORTAGE OF REFRIGERANT.

1.FIX LEAK,EVACUATE AND RE-CHARGE.

 

but for prolonged

2.CONTROL CONTACTS STUCK CLOSED.

2.CLEAN CONTACTS OR REPLACE

 

periods or continuous.

 

CONTROL.

 

 

 

3.EXCESSIVE HEAT LOAD PLACED INTO

3.ALLOW UNIT SUFFICIENT TIME FOR

 

 

 

 

CABINET.

REMOVAL OF LATENT HEAT.

 

 

 

4.PROLONGED OR TOO FREQUENT DOOR

4.PLAN OR ORGANIZE SCHEDULE TO

 

 

OPENINGS.

CORRECT CONDITION.

 

 

 

5.EVAPORATOR COIL ICED.

5.DEFROST EVAPORATOR COIL.

 

 

 

6.RESTRICTION IN REFRIGERATION SYSTEM.

6.DETERMINE LOCATION AND REMOVE.

 

 

7.DIRTY CONDENSER.

7.CLEAN CONDENSER COIL.

 

 

 

8.FILTER DRIER CLOGGED.

8.REPLACE,EVACUATE AND RE-CHARGE.

 

Start capacitor open,

1.RELAY CONTACT NOT OPENING PROPERLY.

1.CLEAN CONTACTS OR REPLACE RELAY.

 

shorted or blown.

2.PROLONGED OPERATION ON START CYCLE:

2.

 

 

 

 

(a) LOW VOLTAGE TO UNIT.

(a) DETERMINE REASON AND CORRECT.

 

 

(b) IMPROPER RELAY.

(b) REPLACE WITH CORRECT RELAY.

 

 

(c) STARTING LOAD TOO HIGH.

(c) CORRECT BY USING PUMP DOWN.

 

 

3.EXCESSIVE SHORT CYCLING.

3.DETERMINE REASON FOR

SHORT

 

 

 

CYCLE,

(SEE PROBLEM

#5) AND

 

 

 

CORRECT.

 

 

 

 

4.IMPROPER CAPACITOR.

4.DETERMINE CORRECT SIZE AND

 

 

 

REPLACE.

 

 

 

Run capacitor open,

1.IMPROPER CAPACITOR.

1.CHECK SIZE AND REPLACE.

 

 

shorted or blown.

2.EXCESSIVELY HIGH LINE VOLTAGE, OVER

2.DETERMINE REASON AND CORRECT.

 

 

110% OF RATED MAXIMUM.

 

 

 

 

Relay defective or

1.INCORRECT RELAY.

1.CHECK RELAY AND REPLACE.

 

 

blown out.

2.INCORRECT MOUNTING ANGLE.

2.REMOUNT RELAY IN CORRECT

 

 

 

POSITION.

 

 

 

 

3.VOLTAGE TOO LOW OR TOO HIGH.

3.DETERMINE REASON AND CORRECT.

 

 

4.EXCESSIVE SHORT CYCLING.

4.DETERMINE REASON AND CORRECT

 

 

 

(SEE PROBLEM # 5).

 

 

 

5.LOOSE OR VIBRATING MOUNTING POSITION

5.REMOUNT RIGIDLY.

 

 

 

6.INCORRECT RUN CAPACITOR.

6.REPLACE WITH PROPER CAPACITOR.

 

 

7.LOOSE WIRING ON RELAY OR OVERLOAD.

7.TIGHTEN ALL WIRING SCREWS.

- 24 -

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Image 27
Continental Refrigerator Refrigerators and Freezers instruction manual Condensing unit runs
Page 26 Page 28

Refrigerators and Freezers specifications

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