Roberts Gorden 400, 200, 350, 150, 250, 300, 225 Troubleshooting for Flame Supervision System, Start

Page 35

SECTION 13: TROUBLESHOOTING

13.3 Troubleshooting for Flame Supervision System

To measure flame current, connect a 0 - 50 μA DC meter in series with the flame probe. If the meter reads negative values, then reverse the test leads.

START

Connect a DC ammeter in series with the flame probe.

Is the flame present and

 

Use General

at least 1 µA DC flame

No

Troubleshooting section to

current?

 

trace the fault.

Yes

 

 

Is there a current flowing in the

 

Is the connecting lead

Yes

damaged? Is the flame probe

flame probe circuit with no

damaged or touching earthed

flame present?

 

components?

 

 

No

 

 

Does “lockout” occur when

 

Is inlet burner gas pressure

Yes

correct? Is live and neutral

there is a flame present?

polarity correct? Is

 

 

 

flame probe circuit correct?

 

 

No

 

 

Repair or replace as

 

 

necessary.

No

 

 

Heater Operating

 

If problems persist, contact

No

Roberts-Gordon, LLC at

TROUBLESHOOT ENDS.

www.rg-inc.com

 

 

 

Repair or replace as

Yes necessary.

Yes Replace ignition control.

NOTE: Minimum flame probe current 1 μA DC. Typical flame probe current 3-5 μA DC.

29

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Contents Combat Page Roberts-Gordon, LLC Page Table of Figures Page Manpower Requirements Heater SafetyNational Standards and Applicable Codes Installer ResponsibilityWall Tag Corrosive ChemicalsClearances to Combustibles Minimum Required Installation ClearancesSeparated Combustion Installation Critical Considerations 3.1 Basic InformationInstallation Clearances and Clearances to Combustibles National Standards and Applicable Codes Suspension Major Components 5.1 GeneralCanadian Requirements Vent InstallationVenting 6.1 Venting United States RequirementsVertical Venting Separated Combustion Heaters Models Uhas 150Unvented Operation Horizontal VentingVent and Roof Detail Vent MaterialStandard Vented Heater Common Vertical Vent Termination Concentric Vent Box Horizontal Outside Combustion Air Supply Unvented InstallationAIR Supply Building VentilationConnections GAS PipingLow Voltage Thermostat with One Heater WiringPositioning Thermostats Fan ControlTransformer Uhas Series Internal Wiring DiagramUhas Series Ladder Wiring Diagram Electrical Connection to the Heater Mechanical Checks Operation and MaintenanceLouvers Electrical ChecksAutomatic Burner Control Sequence Complete the Start-Up Pressure SwitchCheck Gas Rate Turning Off the HeaterTo Turn the Heater Off Simple TroubleshootingSimple Troubleshooting Burner Faults Heater OperationUser Instructions Gas Valve Maintenance Burner Maintenance12.3 Fan/Motor Assembly Maintenance Heat Exchanger MaintenanceVehicles and Other Maintenance ChecklistInstallation Code and Annual Inspections All Vicinity of the HeaterCombustion Fan Scroll When installedBurner Observation WindowTroubleshooting 13.1 General Result in death or electrical shock Troubleshooting For Automatic Ignition Burner SystemsStart Troubleshooting for Flame Supervision SystemConduct start-up procedure as shown on Page 19, Section Troubleshooting for Gas ValvesTroubleshooting for Combustion Fan Burner Components Replacement PartsBurner Injectors Burner CompartmentDescription Part Number Qty Ignition Electrode and Flame ProbeCombustion Fan Vertical Installation Uhas To Replace the Fan Assembly Axial Fan/Guard/Motor AssemblyLimit Switches Removal and Replacement Fan Removal and ReplacementStandard Models 150 400 Uhas Series Dimension Data SpecificationsTechnical Data Table All Models General Technical Data Table All ModelsLimitations on Authority Representatives Warranty is Void ifROBERTS-GORDON will PAY for ROBERTS-GORDON will not PAY forPage Page Some objects can catch fire or explode when placed
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