Viking VCWB300 Refrigerant Valve, Stuck Open, Control Set to Display, Celsius but Customer, 100%

Page 23

 

 

TROUBLESHOOTING GUIDE (con’t)

 

 

 

 

 

 

 

PROBLEM

 

POSSIBLE CAUSE

 

CORRECTION

 

 

 

 

 

 

 

 

2.

Refrigerant Valve

a.

Initiate manual valve activation

 

 

 

Solenoid Fault,

 

mode on opposite valve as that

 

 

 

Stuck Open

 

suspected. Toggle to evaporator

 

 

 

 

 

temp readings associated with

 

 

 

 

 

suspected valve to verify it is

 

 

 

 

 

closed. If it is open, check

 

 

 

 

 

solenoid electrical connections

 

 

 

 

 

to make sure they are not

 

 

 

 

 

crossed. Unplug solenoid to

 

 

 

 

 

see if valve closes. If valve

 

 

 

 

 

closes, replace solenoid. If valve

 

 

 

 

 

does not close, replace valve.

 

 

 

 

 

 

 

 

3.

Room Temperature

 

 

 

 

 

Below Set-Point

a.

Instruct customer.

 

F. 1. “Extremely”

1.

Control Set to Display

1.

Initiate temperature units

 

Cold Temperatures

 

Celsius but Customer

 

selection mode and select

 

Displayed (3° to 18°)

 

Thought it was

 

Fahrenheit units of measure.

 

2. If outside US –

 

Fahrenheit.

 

 

 

Could be “Extremely”

2.

If Outside US – Control

2.

Initiate temperature units

 

Warm Temperatures

 

Set to Display Fahren-

 

selection mode and select

 

Displayed (38° to 65°)

 

heit but Customer

 

Celsius units of measure.

 

 

 

Thought it was Celsius.

 

 

 

G. Lights Stay on in

1.

Lights Switched “On”

1.

Press & release lights On/Off

 

Either Wine Storage

 

100%

 

key.

 

Compartments.

2.

Fan and Light Switch

2.

Check wiring at fan & light

 

 

 

Wiring Crossed

 

switch, and at control board.

 

 

3.

Light Switch

 

Rewire if incorrect.

 

 

3.

Press & release lights On/Off

 

 

 

Malfunction

 

key, then depress light switch.

 

 

 

 

 

Repeat steps. If no effect,

 

 

 

 

 

replace switch.

 

 

 

 

 

 

 

H. Lights will not

1.

Unit in Holiday Mode

1.

Press & release unit On/Off key.

 

Energize in One or

2.

Light Burned Out

2.

Plug in known good lights. If

 

All Wine Storage

 

 

 

they work, replace defective

 

Compartments

3.

Light Switch Discon-

 

lights.

 

 

3.

Check light switch operation

 

 

 

nected of Malfunction-

 

and electrical connections.

 

 

 

ing.

 

Check for 115VAC to and from

 

 

 

 

 

Switch. reconnect wires or

 

 

 

 

 

Replace switch if defective.

 

 

 

 

 

 

24

Image 23
Contents BUILT-IN Full Height Wine Cooler Service NotebookElectronic Function Description Table of ContentsMode of Operation Diagnostic Check PointsGeneral Specifications Model VCWB300# Sealed System Control Panel Assembly Page Page Glass Mullion Shelf Display Panel Keyboard Power Disconnect SwitchShowroom Switch The showroom switch Lights Display Panel OperationWine Cooler Leveling AlarmDisplay Pad Hinge Adjustment Door Stop AdjustmentOutputs and line voltage inputs loads connected typical Diagnostic Check PointsTouch switch inputs with switches connected, typical Futaba VFD display data connection Compressor Relay Use E3 16 as common for measurementsDisplay Board IDB5D Display Board receive Electrical Data General InformationMechanical Data ApplicationDEG. F Resistance Thermister Resistance ReadingSolenoid Valve / Evaporator Fan VCWB300 Wiring Schematic VCWB300 Wiring Diagram Troubleshooting Guide Problem Possible Cause Correction Compressor Fault Troubleshooting Guide con’tProblem Possible Cause Correction Condenser Air / Flow Condenser Fan FaultThermistor Fault Evaporator Thermistor FaultCondenser Air / Con Denser Fan Fault Refrigerant Valve Solenoid FaultLight Switch Lights Switched OnFan and Light Switch Wiring CrossedControl Panel Ribbon Check control panel ribbon No Power from Check E15 to ground See Control BoardUnit Switched Off Press unit On/Off key Bad LED Board Replace control panel assembly
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VCWB300 specifications

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