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517672 
 

12 

4.3.3.1 

To Remove Evaporator Duct Cover 

 

Unplug the product from the power source. 

 

Remove duct cover. 

 

Remove fan cover. 

 

Disconnect fan terminals off fan and remove sensor from housing. 

 

Remove two screws holding fan housing and unclip fan housing from evaporator cover duct. 

 

The evaporator is held in place by a clip on the back wall of the cabinet.  Lift the evaporator 
vertically by approximately 15mm. 

 

Tilt the evaporator to expose a clip holding the evaporator to the evaporator duct cover and 
remove the clip. 

 

The evaporator duct cover will slide down and off the evaporator. 

 

Cut the sensor from the loom and replace it by soldering and heat shrinking the new sensor. 

 

Replace sensor into its holder. 

 

Refit the evaporator duct cover ensuring the evaporator ends are inside the duct. 

 

Reclip the evaporator to the evaporator duct cover. 

 

Reassemble the product in reverse order. 

 

4.4 

Variable Resistor 

 

Unplug the product from the power source. 

 

Remove control box by removing the two screws holding control box in place. 

 

Unclip and remove the top from control box to expose variable resistor. 

 

Unplug the Molex plug from the harness and remove terminals off the light mechanism. 

 

Loosen nut holding variable resistor and remove resistor and connected wiring.  (Replace all 
the  wiring  and  variable  resistor  as  one.    Do  not  attempt  to  replace  variable  resistor  on  its 
own.) 

 

Reassemble in reverse order. 

 

4.5 

Defrost Element 

The  230  volt  109  watt  defrost  element  is  an  embedded  element.    The  defrost  element  is 

not

  a 

replaceable item.  In the event of a defrost element failure the evaporator will need to be replaced. 
 

4.6 

Fan Motor 

 

Unplug the product from the power source. 

 

Remove duct cover. 

 

Remove fan cover. 

 

Disconnect fan motor. 

 

Remove two screws holding fan housing in place and remove housing. 

 

Replace fan motor and reassemble in reverse order. 

 

Summary of Contents for E373

Page 1: ...517672 Electronic Single Temperature Refrigerators Models E373 E450...

Page 2: ...3R 1 FP WH SG 25646 RF450SLDW1 FP AA 25645 RF450SRDW1 FP AA 25647 RF450SRDW1 FP SG HK 23957 E450L D FP WH 24855 E450LW1 FP AA 25051 E450LW1 FP AA 22170 E450L D FP WH 05 22105 E450L D FP WH 07 22101 E4...

Page 3: ...Alarm 7 2 12 Compressor Starting 7 3 FAULT CODES 7 3 1 Fault Code Table 7 3 2 To Disable Alarm 9 3 3 To Manually Force A Defrost 9 4 SERVICE PROCEDURES 10 4 1 Control Module 10 4 2 Compressor Overload...

Page 4: ...1 2 1 Compressors Product Model Compressor Part Number Refrigerant Charge E373 450 207119 100 grams R134a 1 2 2 Compressor Specification Brand Matsushita Model SF48C91RAW5 Part Number 207116 Volts 230...

Page 5: ...m the light to determine whether the door is opened or closed 2 3 Temperature Controller The temperature controller is a variable resistor located in the control box It has replaced the thermostat The...

Page 6: ...controlled by the control module which switches it via a relay The defrost interval can vary from between 8 hours and 16 hours of compressor run time depending on the duration time of the last defrost...

Page 7: ...an audio fault alarm will sound when the door is opened The alarm consists of a number of beeps emitted by the beeper located in the control module The number of beeps emitted indicates the fault as...

Page 8: ...tance Secondary Action Replace control module Fault 10 10 beeps Reason The resistance of the PC sensor is outside the normal range 660 Ohms Primary Action Check the sensor connection at the power modu...

Page 9: ...ds 3 3 To Manually Force A Defrost Open the door push the light plunger in and hold in turn the variable resistor control knob to the warmest setting then turn it to the coldest setting within ten sec...

Page 10: ...move all the connectors from the control module Refit the module in reverse order making sure all wiring is secured in the module and the wiring harness is located in the module slot 4 2 Compressor Ov...

Page 11: ...from the power source Remove duct cover Remove fan cover Disconnect fan terminals off fan and remove sensor from housing Remove two screws holding fan housing and unclip fan housing from evaporator c...

Page 12: ...the evaporator duct cover Reassemble the product in reverse order 4 4 Variable Resistor Unplug the product from the power source Remove control box by removing the two screws holding control box in pl...

Page 13: ...517672 13 5 WIRING DIAGRAM...

Page 14: ...ug overload and control module connections Check start and run windings as per specifications Check run capacitor 6 4 PC Too Cold Check resistance of variable resistor Check resistance of PC sensor as...

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