Frymaster 17ECS Technician Troubleshooting Guides, Troubleshooting the 24VAC Power Supply System

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6.4.6 Technician Troubleshooting Guides

TROUBLESHOOTING THE 24VAC POWER SUPPLY SYSTEM

Verify that the power cord is properly connected to the electrical service and that the circuit breaker is not tripped.

Place the master ON/ OFF switch in the ON position.

Was there an

audible snap from the contactor indicating the coil energized?

No

Is 24VAC present

across Pins 1and 2

of the 15-pin connector

on the front of the

contactor box?

No

Is line voltage

present on the line side of the transformer?

No

Check 5-amp transformer

fuse. Replace if blown. If fuse is OK, cause is loose or broken wiring, or the electrical service circuit is dead.

The primary indicator of a problem with the 24VAC Power Supply System is a failure of the computer to activate when the master ON/OFF switch is placed in the ON position and the computer ON/OFF switch is pressed.

 

 

24VAC Power Supply

Yes

 

 

System is OK.

 

 

Causes are broken or loose wiring

Yes or a failed contactor. If wiring and connections are verified to be intact,

replace contactor.

 

 

 

 

 

 

Verify continuity of

 

 

Is 24VAC

 

 

 

master ON/OFF switch in ON position.

 

 

 

 

 

Replace switch as required.

Yes

 

present on the load side of

 

Yes

 

 

 

 

If switch is OK, causes are broken

 

 

the transformer?

 

 

 

 

 

 

 

 

 

 

 

 

or loose wiring. Check connections and

 

 

 

 

 

 

 

 

 

 

 

 

replace wiring as required.

No

Transformer has failed. Replace.

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Contents Hour Service Hotline Page Preventive Maintenance ESW/EWBS Service Procedures & Parts Page This page Intentionally Left Blank Safety Information Parts Ordering and Service InformationEquipment Description Qualified Installation Personnel Qualified Service PersonnelQualified AND/OR Authorized Operating Personnel What to do if your equipment arrives damaged National Code Requirements General Installation RequirementsElectrical Grounding Requirements FCC CompliancePre-Connection Preparations Caster/Leg InstallationUse copper wire ONLY, suitable for at least 170ºF 75ºC Connecting to the Electrical SupplyWatts Per leg Wire Size Electric Cooker Models 17EC, 17ECS, ESW, & EwbsField Connection Wiring Diagrams Computers are not interchangeable IntroductionOperating Instructions Setting the Controller Transition Temperature/Boil IntensityAltitude Boiling Point Toggling Between Fahrenheit and Celsius Temperature Display Controller Simmer Mode AdjustmentStart-Up Procedure Shutting the 17EC/17ECS DownComputer Magic III Controller As Used on Ewbs Units Setting the Unit UP for FIRST-TIME Operation Operating the Computer Selecting FAHRENHEIT- Celsius Display Mode Shutting the Ewbs with CM III Computer Down Selecting Boil or Simmer ModeBoiling Out the Cookpot Page This page Intentionally Left Blank Inspect Equipment and Accessories for Damage Daily Preventive MaintenanceThis page Intentionally Left Blank Before calling a servicer or the Frymaster Hotline Problem Probable Causes Corrective Action Operator Troubleshooting GuideTroubleshooting Guide Replacing Fuses in 17EC and 17ECS Models Functional Description Replacing Electronic Components Other than the Computer Replacing Equipment Components Replacing the ComputerReplacing a Heating Element Replacing the High-Limit Thermostat Replacing a Water-Level Sensor Replacing the Temperature ProbeReplacing the Pressure Regulator or Solenoid Valve Replacing the Water Faucet Replacing a Basket Lift Motor or MicroswitchReverse Steps 1-7 to complete the procedure Replacing the Cookpot or Rinse Tank Troubleshooting How the Power-Supply System WorksHow the Computer Works How the Water Heating System Works How the Autofill/AutoSkim System WorksHow the Basket Lift System Works Troubleshooting the 24VAC Power Supply System Technician Troubleshooting GuidesTroubleshooting the 24VAC Power Supply to the Computer Begin to fill? Troubleshooting the Autofill SystemProbe Thermostat Troubleshooting the Water Heating SystemOK? Troubleshooting the Basket Lift SystemThis page Intentionally Left Blank Component Parts ListComponents Component Cabinetry Component Rinse Tank CookpotComponent Electronics Component Water Supply System Components Computer Control Wiring Diagram 17ECSWiring Diagrams 17EMCS Page This page Intentionally Left Blank Units with Manual Controls rocker-switches and a thermostat Units with Computer Controls Replacing Equipment Components Replacing the Computer Replacing the Heating Element Hole Lead Replacing a Water-Level Sensor Attach wire15C here Attach wires 20C and 35C here Typical Water Supply System Configurations Reverse Steps 1-4 to complete the procedure On units with manual thermostat controls Replacing the CookpotRemove these screws Troubleshooting How the Autofill and Skim Systems Work How the Basket Lift System Works Position. Replace switch as required Controls? Checking HIGH-LIMIT Thermostat Temperature Probe Line voltage present at the Common Replace Cover Lift Component Disproportionately large for clarity 910-7377 Control Components Cookpot and Drain Components Electronics Component Supply Component Remove this Cover to Inspect Field Wiring Wiring DiagramsWith Computers UnitsService Hotline

17EC, 17ECS, EWBS, ESW specifications

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