Manuals / Vulcan-Hart / Kitchen Appliance / Convection Oven

Vulcan-Hart VC6EC, VCIEC, VC6ED, VC4ES, VC4ED, VC6ES service manual Troubleshooting, ALL Models

Models: VC6ES VC4ED VC4ES VC6EC VC6ED VCIEC

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FULL SIZE ELECTRIC CONVECTION OVENS - TROUBLESHOOTING

TROUBLESHOOTING

WARNING: CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TESTS OR MEASUREMENTS WHILE POWER IS APPLIED TO THE MACHINE. EXERCISE EXTREME CAUTION AT ALL TIMES. IF TEST POINTS ARE NOT EASILY ACCESSIBLE, DISCONNECT POWER, ATTACH TEST EQUIPMENT AND REAPPLY POWER TO TEST.

ALL MODELS

SYMPTOMS		POSSIBLE CAUSES

Blower motor doesn’t run with power switch in “ON”	1.	Line voltage incorrect.
“COOL DOWN” or position.	2.	Power switch (S1) malfunction.
	3.	Fan speed switch (S3) malfunction.
	4.	Interconnecting wiring malfunction.
	5.	Motor inoperative.

Blower motor doesn’t run with power switch “ON”, but	1.	Door switch malfunction.
oven heats.	2.	Interconnecting wiring malfunction.
	3.	Motor inoperative.

Blower motor doesn’t run in “Cool Down”, but runs ok	1.	Power switch (S1) malfunction.
in “ON” position.	2.	Fan speed switch (S3) malfunction.
	3.	Interconnecting wiring malfunction.

Excessive or low heat in oven.	1.	Line voltage incorrect.
	2.	Heating element malfunction.
	3.	Contactor malfunction.
	4.	Convection Fan motor malfunction.
	5.	Temperature probe malfunction or mechanical
		thermostat malfunction.
	6.	Temperature control not calibrated.
	7.	Temperature control malfunction.

Mechanical Timer inoperative or not functioning	1.	Interconnecting wiring malfunction.
properly.	2.	Line voltage incorrect.
	3.	Timer malfunction.

Component cooling Fan does not run.	1.	Motor inoperable.
	2.	Interconnecting wiring malfunction.

Uneven Cooking.	1.	Convection Fan motor speed/direction.
	2.	Air flow Baffles missing or damaged.
	3.	Line voltage incorrect.
	4.	Heating element(s) malfunction.
	5.	Contactor malfunction.

Intermittent operation problems.	1.	High ambient temperatures.
	2.	Wiring connections loose.
	3.	Cooling fan malfunction.

F25105 (December 2001)		Page 56 of 60

Image 56

Vulcan-Hart VC6EC, VCIEC, VC6ED, VC4ES, VC4ED, VC6ES ALL Models, Full Size Electric Convection Ovens Troubleshooting

Contents

VC4E & VC6E Series VC4ED Shown Table of Contents Full Size Electric Convection Ovens General VC6ES VC6ED VC6EC SpecificationsVC4ES VC4ED VC4EC Removal and Replacement of Parts Covers and Panels Control Panel Components Left Side PanelRemovable Components Covers and Panels Temperature Probe Solid State Control Component Panel Components Front Access Heating Elements Left Side Elements Shown Alternate AccessBlower and Motor Door Switch Service Procedures and Adjustments Door Window Oven Doors and Bearings Independent Doors Assembly Removal Oven Doors Simultaneous Doors Door Catch Roller Assembly Independent Doors DisassemblyAssembly Removal Mechanical KX Thermostat Lamp Assembly High Limit ThermostatInterior Lights Lamp Cooling FAN Service Procedures and Adjustments Solid State Temperature Control Calibration Mechanical KX Thermostat Calibration Temperature Probe Test Solid State Control Solid State Temperature Control TestTroubleshooting 208 240 480 Temp F OhmsAmps PER Voltage KW PER Element Ohms PER Lead Blower Adjustment Door Adjustment Door Catch Roller Adjustment Independent Doors Introduction Door Switch AdjustmentProcedure Operation Setup modeComputer Control Alternating on Menu Display Parameter DataProbe Test Solid State Relay Test Computer Control Temperature Calibration Computer Control Operational Test KEY Code CalyHEY Restore Factory Settings Electrical Operation Component FunctionSSR1 & SSR2 1CON & 2CON Mechanical Temperature Control Component Location Full Size Electric Convection Ovens Electrical Operation Full Size Electric Convection Ovens Electrical Operation VC4EC/6EC Plug, Socket and Components Cook & Hold Standard VC4ED, VC6ED with Solid State Temperature Control Sequence of OperationCook Cycle VC4ES, VC6ES with Mechanical KX Thermostat VC4EC, VC6EC Computer Control Timer Cycle, Cooking KX Thermostat or Solid State ControlCool Down Cycle KX Thermostat or Solid State Control Cool Down Cycle Temperature and Time Cycle CookingCook and Hold Cycle Schematics VC4ES, VC6ES with Mechanical KX Controls VC4ES, VC6ES with Mechanical KX Controls VC4ED, VC6ED with Solid State Temperature Control VC4ED, VC6ED with Solid State Temperature Control Full Size Electric Convection Ovens Electrical Operation VC4EC, VC6EC Computer Control, 480V Roast & Hold Standard This page Purposely Left Blank Wiring Diagrams VC4ES, VC6ES with Mechanical KX Control Full Size Electric Convection Ovens Electrical Operation VC4ES, VC6ES with Mechanical KX Control Full Size Electric Convection Ovens Electrical Operation VC4ED, VC6ED with Solid State Temperature Control Full Size Electric Convection Ovens Electrical Operation VC4ED, VC6ED with Solid State Temperature Control Full Size Electric Convection Ovens Electrical Operation Full Size Electric Convection Ovens Electrical Operation Full Size Electric Convection Ovens Electrical Operation VC4EC, VC6EC Computer Control, 480V Roast & Hold Standard Full Size Electric Convection Ovens Electrical Operation ALL Models TroubleshootingFull Size Electric Convection Ovens Troubleshooting Computer Control Models only Control Operational Test Computer Control Error CodesCode & Problem Probable Cause Solution T E S Condensed Spare Parts List Part Number Description VC4ES VC4ED VC4EC VC6ES VC6ED VC6EC