S E R V I C E M A N U A L
Model:
BU-22
，
BU-58
SAFETY PRECAUTIONS
WARNING:
Unplug the appliance before cleaning, maintenance or servicing.
Failure to do so can result in electrical shock or death
Tools you will need
1. Combination Plier 2. Phillips/Slotted Screwdriver
3. Multimeter 4.Clamp Meter (5A)
5 Soldering Iron 6. Wire Strippers
7. Pinch Off Plier8 Hairdryer 8. Mill File
Material you will need
1. Service Tube (
Ф
6mm) 2. Shock Absorbing Clay
Device you will need
1. Vacuum Pump 2. Welding Machine
3. Gas Meter 4. Temp. Meter
CONTENTS
Cooling System Fault
■
Troubleshooting ………………………………………………………………………………………………..(P1)
■
How to re-charge Refrigerant ………………………………………………………………………………(P2)
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Test After Repairing…………………………………………………………………………………………….(P2)
■
Baffle Board and Control Box Disassembly ………………………………………………………………(P3)
■
Solder Joints Position (Front Side) ……………………………………………………………….…….....(P9)
Noise Problem
■
Compressor Noise ……………………………………………………………………………...…………….(P11)
■
Fan Noise ……………………………………………………………………………………………………..(P11)
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Noise From Capillary Tube…………………………………………………………………………………....(P13)
Evaporator Ice-Up ……
……………………………………………………………………….………..(P15)
Temperature Unstable …
………………………………………………………………….……….(P15)
Control System Faults
■
Temp. Sensor Fault .……………………………………………………………………….………………(P16)
■
Temp. Sensor Replace…………………………………….……………………………… ……………….P17)
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Display Error of LED Light .……………………………………………………………….…………….(P18)
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Control PCB Replace…………………………………….……………………………… ………………...(P19)
■
Power PCB Replace…………………………………….……………………………… ………………….(P20)
■
Transformer Replace … ……………………………………………………………………………………(P21)
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Control PCB Connection Position ….…………………………………….……………………………….(P22)
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Power PCB Connection Position… ……………………………………………………………………….(P22)
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Compressor Start Relay and Overload Protector Replace……………………………………………...(P23)
■
LED Light Replace …………………………………….………………………….………………………(P24)
