background image

       ※1 Ambient temp  25℃

■ Typical Problem

       ※2 Ambient temp  25℃ to -16℃

※4 Replacement of only the thermistor can not.

       ※3 Use tester: Digital multimeter 

      It will be the exchange of the cooling system.

Symptoms

Cause

Test Result

Treatment

Resistance of compressor is  ∞Ω
・Normal: Approx. 1.6Ω  ※1, ※3
Output voltage of power supply is AC 0V
・Normal: Approx. AC11-18V ※1
Resistance of EVA. thermistor ∞Ω
・Normal: Approx. 2kΩ-10kΩ ※2

Replace of cooling system
Replace fan motor
Charge the bettery

-

Make some room for cool air
Replace the fuse
Replace the fuse
Check the vehicle

■ Technical Data

       ※1 Ambient temp  25℃

※3 Use tester: Digital multimeter 

       ※2 Ambient temp  25℃ to -16℃

Checking Points

Normal data

Approx.        15kΩ - 5kΩ
Dial position    OFF - 5

Resistance of EVA. thermistor

Between two pin of the coupler

Approx. 1.6Ω ※1, ※3

Fuse in the vehicle is open

Ventilation at mechanical part is not enough

 Checking items

Output voltage of power supply

Input voltage at compressor

Too many things are put inside

Replace the cooling system

Replace the cooling system
※4

EVA. thermisitor is open

Coil of the compressor is open

Compressor does not
work

Power supply is broken

Inside of the fridge does
not get cold

9

Approx. AC 11V - 18V ※1

Between outgoing cords from power supply

Approx. AC 11V - 18V ※1

Socket or other DC power line in the vehicle is bad

Resistance of the compressor 

Special Fuse   

Fuse at power supply

Approx. 2KΩ - 10KΩ ※2

Between incoming cords to compressor

Power lamp is lit.

Gas is leaking from Cooling Unit
Fan motor is broken
Input voltage is lower than 10V

The special fuse inside DC cord is open

Ambient temparature is higher than 30℃

Cooling is weak 

5. TROUBLE SHOOTING

Resistance of the registor variable

Between terminals brown and black.

Current value measurement with clamp meter
between input cord terminals.

Compressor rated current

Approx. 1.7A - 2.0A

Replace power supply

Make at least 150mm room
between unit and wall

Between terminals of compressor

Power lamp is not lit.

Содержание 0642 013 3000

Страница 1: ...2020 12 1 MODEL MD14F 0642 013 3000 SERVICE MANUAL...

Страница 2: ...well as technical skills necessary to perform servicing May lead to death or serious injury if failed to comply with this precaution May lead to injury if failed to comply with this precaution Lead t...

Страница 3: ...8 Typical Problem 9 Technical Data 9 6 CHECK POINT CHECK METHOD 10 Check 1 Special Fuse 10 Check 2 Output Voltage of the Power Supply 10 Check 3 Input Voltage of the Compressor 10 Check 4 Resistance o...

Страница 4: ...7 INTERIOR DIMENSIONS W D H 13 7 7 5 8 4 DC 12V TEMPERATURE CONTROL Automatic temperature control by dial setting Electronic thermostat control type Polypropylene resin MODEL CODE Foamed polyurethane...

Страница 5: ...Dimensions Tolerance is omitted mm 1 SPECIFICATIONS 2 284 190 442 213 348 398...

Страница 6: ...nd solid surface although it will operate satisfactory for long period on angles of up to 30 Be sure your fridge is not in direct sunlight Fig 1 near a gas stove heater or other heat generating applia...

Страница 7: ...PERATURE CONTROLLER FAN MOTOR POWER SUPPLY COOLING SYSTEM LATCH ASSY DIAL DOOR ASSY CASE BOTTOM POWER LAMP TERMINAL BLOCK DC CORD HINGE SPECIAL FUSE HOLDER ASSY COMPRESSOR EVAPOLATOR THERMISTOR EVA TH...

Страница 8: ...Block Diagrams Wiring Diagrams 4 CONNECTING DIAGRAM 5...

Страница 9: ...f the thermistor Approx 2k 10k Thermistor is broken Power supply output o g Approx AC11V 18V AC 0V Power supply is broken Replace the power supply Lower than AC 1 Output maladjustment See page 11 Chec...

Страница 10: ...Power supply output o Approx AC11V 18V Lower than AC 1 Replace the power supply Output maladjustment Is the fan motor running NO Fan motor is broken Replace the fan motor YES Higher than 2 0A The com...

Страница 11: ...ing Test result Judge Fixing Resistance of the thermistor Approx 2k 10k 2 Thermistor is short 0 Replace the registor variable 0 Registor variable is shorted Resistance at the registor variable Approx...

Страница 12: ...of power supply Input voltage at compressor Too many things are put inside Replace the cooling system Replace the cooling system EVA thermisitor is open Coil of the compressor is open Compressor does...

Страница 13: ...Lower than AC11 AC 0 V Check 3 Input Voltage of the Compressor Fig 3 Checking point Voltage measurement between terminals of input cord Test result Judge Approx AC11V 18V Normal Lower than AC11 Power...

Страница 14: ...10 k Normal Broken 0 Short Circuit When short circuit compressor runs continuously Check 6 Resistance of the Registor Variable Fig 6 Checking point Remove six pin coupler Check the resistance at betw...

Страница 15: ...g 7 Checking point Test result Judge Approx 1 7 2 0A Normal Lower than 1 7A Gas is leaking 12 Compressor is locked or contaminated Higher than 2 0A Current value measurement with clamp meter between i...

Страница 16: ...two screws remove the holderassy Fig3 7 Remove two pin coupler of EVA thermistor Fig4 7 REPLACING PARTS 13 LATCH Fig 1 DOOR ASSY Fig 2 CASE BOTTOM Fig 4 In the case of power supply only exchange WORK...

Страница 17: ...couplers Fig 5 Pull out the power supply and holder assy from the main body Fig 5 Remove the input cord from the compressor Fig 6 Perform the procedure of how to replace the cooling system Page 15 St...

Страница 18: ...How to Replace Registor Variable 1 Perform the procedure of how to replace the cooling system Page 15 Step 3 6 2 Remove nut washer Fig 9 3 Remove the coupler Fig 9 15 7 REPLACING PARTS Fig 9...

Страница 19: ......

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