Roberts Gorden DAT100, DAT75, DAT90, DAT115 Troubleshooting for Flame Supervision System, Start

Page 38

DUALAIR® HEATING AND COOLING UNITS INSTALLATION OPERATION AND SERVICE MANUAL

15.3 Troubleshooting for Flame Supervision System

START

Connect a DC ammeter in series with the flame probe.

Is the green light on and at least 1 µA DC fame current?

Yes

Is there a current flowing in the flame probe circuit with no flame present?

No

Does “lockout” occur when there is a flame present?

No

Heater Operating

TROUBLESHOOT ENDS.

No	Use section 15.1 to
No	trace the fault.
	Is the connecting lead		Repair or replace as
Yes	damaged? Is the flame probe	Yes	Repair or replace as
Yes	damaged or touching earthed	Yes	necessary.
	components?
	Is inlet burner gas pressure
Yes	correct? Is live and neutral	Yes	Control box faulty.
Yes	polarity correct? Is	Yes	Replace with correct type.
	flame probe circuit correct?
	No
	Repair or replace as
	necessary.
	If problems persist, contact
	ROBERTS GORDON® at
No	Tel: +44 (0) 1902 498733
	www.combat.co.uk
	or www.rg-inc.com

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

32

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Contents DualAir Page 2005 Page Table of Figures Page Product Approval National Standards and Applicable Codes Clearances to CombustiblesCorrosive Chemicals Electrical Supply Minimum Required Installation ClearancesCritical Considerations 3.1 Basic Information FlueInstallation Clearances and Clearances to Combustibles Specifications 4.1 DAT all models Front View Left VersionGeneral Technical Data Table all models Model 100 115 Fan DataModel 100 115 2 DAT100 and 115 4 kW motor Shelf Mounting and Suspension Heater Installation 5.1 GeneralHandling Air Intake Terminal Cover Flue Installation 6.1 Flue InstallationType B22 Appliance Flue ConversionControl Section & Upper Panel Vertical and Horizontal Flue Termination Type B22 Appliance Heaters Installed Within the Heated Space Room Sealed InstallationOpen Flued Installation Building VentilationDepartment for recommendations regarding Optional Heater Configurations 8.1 Distribution Duct14, .1 and to ensure that there is Duct resistance and design. Tel +44 0Gas Connection with Stainless Steel Flex Connector ConnectionsSee Page 17, .3 through Page 18, Section Remote ControlRemote Frost Thermostat Number DAT Wiring Diagram Models See Page 20, SectionSite wiring connections shown DAT Site Connections at Main Circuit Board Louvers Gas Fired HeaterCooling Coils/Condensers Electrical ChecksAutomatic Burner Control Box Sequence Commissioning the Gas Valve Combustion Testing all modelsCommissioning the Gas Valves Set Minimum PressureComplete the Commissioning Pressure SwitchTurning Off the DualAir Unit Instruction to the UserHeater Operation See Page 26, SectionSee Page 25, Section See Page 7, .3 and Page 8, FigureSimple Fault Finding burner faults Burner Lockout Reset ButtonSimple Fault Finding all models Cooling Section OperationHeat Exchanger Maintenance Burner Maintenance13.3 Fan/Motor Assembly Maintenance Servicing 13.1 Servicing InstructionsGas Control Valve Maintenance all models Gas Valves Conversion Between Gases 14.1 GeneralBurner Conversion Conduct Commissioning procedure as shown on Page 21, Section Troubleshooting For Automatic Ignition Burner Systems Result in death or electrical shockTroubleshooting for Flame Supervision System StartTroubleshooting for Solenoid Valves Troubleshooting for Main FanTroubleshooting for Fan Contactor Conduct Commissioning procedure as on Page 21, SectionSee Page 5, Section Gas Valve Replacement all modelsBurner Components Gas ValveBurner Compartment Burner InjectorsIgnition Electrode and Flame Probe Remove screws securing outlet flange to the flue adapter Heater Pressure Switch See Page 21, SectionFilter Pressure Switch Pressure SwitchesCoil Pressure Switch Fan Motor Removal Ignition Control16.7.1 S4563C Models 75 to Fan Removal and Replacement Combination Fan/Limit Thermostat Page Page Some objects can catch fire or explode when placed

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