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:
I.
Troubleshooting for Electric Control:
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.