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Service Manual for VT-DS300SS-2Z and VT-DS300SS-2Z-L
This wine cooler should be serviced by a qualified technician.
Be sure to have the unit unplugged while repairing the unit.
Tools Required:
1. Tool for Electrical Apparatus Troubles: multi-meter, split-core type meter, power meter, Philips
screwdriver, long flat nose pliers, vice, power board, control board, etc.
2. Tool for Cooling Troubles: suds, brush, R134a gas, nitrogen, oxygen/acetylene soldering set,
oxygen, acetylene, ø6X0.7copper tube, ø4X0.7copper tube, silver-copper brazing alloy, scaling
powder, etc.
Troubleshooting & Maintenance:
Troubleshooting for Electric Control:
I.
1. Unworking Display. Display does not appear to be working, Display does not appear
to be working after the appliance is turned on.
(1) Please refer to the clearance procedures below:
No display in the control panel.
Check if the electricity is available in the socket. →No. →Repair the socket.
Yes. →Open the terminal box lid of the medium air duct pane.
Yes. →Check if the wires of terminals are connected rightly.
Loose →Connect the terminals rightly or change it. →Inspect it with power-on. → OK. →
Trouble clearing. → Still not normal.
OK. → Change with a normal control panel.
Inspect it with power-on →OK. →Change the control panel. → Inspect it with power-on. → OK.
→ Trouble clearing. → Still not normal.
Not normal. → Change the PC board.
Inspect it with power-on. →OK. →Change the PC board. → Inspect it with power-on. → OK.
→ Trouble clearing. → Still not normal.
Not normal. → Change the PC board and the control panel.
Inspect it with power-on. →OK. →Change the PC board and the control panel. → Inspect it
with power-on. →OK. → Trouble clearing. → Still not normal.
Not normal. → Check if each 7P terminal is short circuit or open circuit.
Repair 7P terminals.
Inspect it with power-on. → OK. → Trouble clearing. → Still not normal.
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Summary of Contents for Vinotemp VT-DS300SS-2Z
- Page 1 Service Manual for VT-DS300SS-2Z and VT-DS300SS-2Z-L This wine cooler should be serviced by a qualified technician. Be sure to have the unit unplugged while repairing the unit. Tools Required: 1. Tool for Electrical Apparatus Troubles: multi-meter, split-core type meter, power meter, Philips screwdriver, long flat nose pliers, vice, power board, control board, etc.
- Page 2 （2）Disassembly inspection for the median air duct panel 1. Remove the two shelves on top of the median air duct panel 2. Remove the connecting line box cover by removing the screw from the left side with a Philips screwdriver. Check the connecting line box cover. 3.
- Page 3 （3）Replace control panel 1. Disconnect all the line terminals inside the connecting line box of the median air duct panel. 2. Remove the underneath screws which are fixing the median air duct panel. (6 pcs screws) 3. Pull out the median air duct panel...
- Page 4 4. Remove the screws from the bottom of the median air duct panel with a Philips screwdriver. 5. Divide the upper and lower of the median air duct panels. Be sure to observe the position of the wires. After replacing the control panel, fix the wires by aluminum-foil paper in the original position.
- Page 5 7. Loosen the control panel, remove the screws (5 pcs) with a Philips screwdriver. Keep the small hose sideward. After maintenance, install the median air duct component as the opposite disassembling procedures. (4) Replace the power board (Power board is inside of the compressor cabin) 1.
- Page 6 Power board box, 7P terminal, the output of heater, the input of power, public input of power, the fixing screws of power board, output of compressor and condensation fan. 2. Display not working or other display fault, replace the control panel as with the same disassembling method, check if it solves the fault after assembling.
- Page 7 Check the PC board if there is voltage out-putter from the compressor. → Yes. → Check the lead and terminal of the compressor if turn off. → Replace the defective lead or terminal. → Inspect with power-on. → OK. → Trouble clearing. → Still not normal. No.
- Page 8 3. Internal wiring diagram of connecting line box for compressor Capacitor of compressor, terminal of capacitor, input terminal of compressor power, protector of compressor, starter of compressor 4. Controlling temperature is faulty: If the temperature is different by 4℃ from setting the temperature when cooling, that is out of control.
- Page 9 →Trouble clearing. Check the sensor of defrosting. →OK. Change the sensor of defrosting. Inspection with power-on (Frozen heavily). →Frozen heavily Trouble clearing. (2) If the temperature of the lower chamber doesn’t reach 15℃ above (setting temperature 15℃ above), please refer to the clearance procedures below: Remark：(a) If the temperature of the lower chamber of the wine cooler is different by 3℃...
- Page 10 (a) Open the connecting line box of the median air duct panel, find the terminal of the sensor component, check the resistance value of each connecting line by multi-meter. It it’s close to the comparison table of temperature/resistance value, then it’s good. If the appliance is turned off or has an open circuit, the sensor is broken and needs to be replaced.
- Page 11 The position of the sensor for the lower chamber (2) Replace the sensor: Please replace with a new one when you determine the sensor is broken. 1. Remove the fixing screws (2 pcs) of the sensor box cover with a Philips screwdriver. 2.
- Page 12 3. Put the new sensor into the neck of the sensor box. 4. Fix the screws to the original position. 5. The change of the defrosting sensor. (1) Remove all the screws of the air duct panel in the upper chamber.
- Page 13 (2) Change the defrosting sensor, fix it to the top right evaporator tube with cable ties. (3) Wrap up the fixed defrosting sensor with the aluminum foil tape. (4) Fix the screws in the air duct panel. 5. The evaporator of the air duct panel is frozen. This problem is caused by two problems.
- Page 14 (2) Inspection Procedures about the light circuit. Problem with the lights not working. Check if the light button in the control panel works fine. → Does not work. → Change the control panel. →After repair. →Check the button. →Lights work. →Trouble clearing. →Still not normal. Work.
- Page 15 3. 12V input terminal Check with multi-meter if there is a 12V voltage in both terminals. 12V output terminal (connected with the next light panel). 4. Disassemble 3 screws to remove the light panel, and use these 3 screws to fix the light panel after changing the new light panel.
- Page 16 II. Troubleshooting for cooling: 1. The pipe welding crater (2) The position of all the welding craters are outside. Welding craters of the end capping, welding craters of the process pipeline in the compressor, welding craters of the exhaust pipe in the compressor, welding craters of the return-air duct in the compressor, welding craters of dry filter in the capillary, welding craters of the condensator and transitron, welding craters of the exit in the condensator.
- Page 17 2. The judgement method of a problem with the cooling system, check the power of the whole machine, you could judge the problem of cooling system when the power of compressor running is smaller than 150W or larger than 280W. 3.
- Page 18 the welding craters of exhaust pipe, the condensator and transitron or inside the condensator. Please check each welding crater to find the blockage, and re-weld the blocking welding crater or change the condensator. Replace with a new dry filter after welding.
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