Aiko CTH3-115, CTH3-150, CTH3-80, CTH3-200 service manual Troubleshooting

Page 67

SECTION 12: TROUBLESHOOTING

RED, 8 flashes:

Lockout- Pressure switch

 

failed to operate or modulation

 

current was incorrect.

 

Condition could be caused by:

 

• Pressure Sensor

 

• Pressure Switch

 

(faulty or hoses reversed)

 

• Gas Valve Modulation Coil

 

• Wire Harness (6 wire)

RED, 9 flashes:

Lockout- Air Supply.

 

Condition could be caused by:

 

• Blower

 

• Pneumatic Conections to

 

Pressure Sensor

 

• Blockage in flue or inlet

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Contents Gas-Fired, Low Intensity Unitary Heater Page Roberts-Gordon LLC Page Table of Figures Page California Proposition Heater SafetyManpower Requirements Safety Labels and Their PlacementTop and Bottom Panel Label Placement Side and Back Panel Label Placement National Standards and Applicable Codes Installer ResponsibilityWall Tag Corrosive ChemicalsInches Centimeters Model Maintain clearances to combustibles at all times for safetyONE Side Reflector Tube TUBE, Standard ReflectorUnapproved Foot Deco Grille and Protective GrilleNational Standards and Applicable Codes Major Components Model Tubing Length Core Packages Minimum Aluminized Standard Parts ListHeater Installation Typical Suspension Details Linear Heater Assembly Overview Linear Heater Layout Overview Tube Clamp Package Installation Burner Tube InstallationInsert tubes into coupling Tighten coupling to join tubes Coupling and Tube AssemblyTurbulator Installation 2 Coupling and Tube AssemblyHanger Burner Tube Reflector Reflector InstallationDescription Part Number Reflector Support Package 1 Reflector, U-Clip and Reflector Support InstallationWindow facing down Burner InstallationTube Configuration Optional Heater AccessoriesTube Heater Assembly Overview Tube Heater Layout Overview 2 Elbow Installation Elbow Package Configuration .2.1 Elbow Installation3 Reflector Joint Installation Reflector Joint Detail 4 Reflector Joint Installation 5 Reflector Joint DetailReflector Side Extension 2 Side Reflector InstallationScr ews 2 Frame Shield Installation 3 Grille Installation 2 Grille End Cap InstallationCanadian Requirements United States RequirementsUnvented Operation Length Requirements Horizontal VentingVertical Venting Unvented Operation Tube TerminationCommon Side Wall Venting Vertical Ventilation 4 10 cm PipeCommon Vertical Venting Outside Combustion Air Supply Vertical Outside Air Supply for Single Heater InstallationSide View TOP View Vertical Outside Air Supply for Double Heater InstallationGAS Piping Correct Positions Standard Heater Configuration WiringCentral and Satellite Heaters Zoning Capability Central Heater ConfigurationSatellite Heater Jumper Setting Satellite Heater ConfigurationCommunication Wiring within a Zone of Heaters Communication Wiring within a Zone of Heaters Zone Sensor Heat Demand Control WiringThermostat MS/TP Wiring Analog Signal Modulating Thermostat P/NSequence of Operation for Modulating Thermostats Remote Analog Signal Power RequirementsCable Termination Analog Control Signal Wiring Diagram Potentiometer Control Device Potentiometer Control Wiring DiagramThermostat, modulating Description Part Number Modulating Thermostat Wiring Diagram with BACnet optional Internal Wiring Ladder Diagram Electrical Connection to the Burner Line Voltage Power WiringLow Voltage Control Wiring Installation To Shut Off Heater Operation and MaintenancePre-Season Maintenance and Annual Inspection Sequence of OperationObjects Installation Code and Annual InspectionsVicinity of the Heater Vehicles and OtherBurner Observation MA wiring Suspension PointsSafety Labels Gas LineTroubleshooting General LED Codes Control LEDTroubleshooting Troubleshooting Flow Chart Troubleshooting Manifold Gas Pressure Measurement Pneumatic Connections Replacement Parts Replacement Parts Description Part Number Pipe Connection General SpecificationsDimensions GAS Pressure AT ManifoldPage Limitations on Authority Representatives Warranty is Void ifROBERTS-GORDON will PAY for ROBERTS-GORDON will not PAY forPage Page Page