Bradford-White Corp D-38T-155 service manual Pilot Inspection

Page 28

 

 

 

 

 

 

 

SERVICE PROCEDURE D24-II

 

 

 

 

 

 

 

Pilot Inspection

 

 

 

 

 

 

 

Condition:

 

 

 

 

 

Error code 57: Flame Rod Shorted

 

 

 

 

 

to Ground

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Disconnect power. Shut off gas

Check to see if pilot shield is touching

 

 

 

supply to water heater. Slide out

pilot flame sensor or flame sensor

 

Check pilot flame sense wire for

burner assembly (see section on

 

touching pilot hood. Bend shield to

 

broken insulation. Replace pilot if

 

 

“removing pilot and main burner

prevent interference or replace pilot

 

defective

assembly”).

shield.

 

 

 

 

Make sure pilot shield

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

clears flame sense rod

 

 

 

 

 

 

 

 

 

 

 

Reinstall pilot and burner assembly.

Flame Sense Rod

 

 

Reconnect gas line union, turn on

 

 

gas.

 

 

 

 

 

 

 

 

 

Spark Electrode

 

 

Check for Gas Leaks

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reconnect power and verify proper

 

 

 

 

 

 

 

ignitions.

Page 28

28

Image 28
Contents Service Manual To be performed only by qualified service providersTable of Contents Features of Honeywell Integrated Controls System Tools Required for Service Specifications Sequence of Operation Lockout ConditionTroubleshooting Pins to black and white wiresVoltage at primary pins 1&3 white DefectiveDisplaying temperature Sensors Example of error code shown on control displayFrom previous Operate?Using Control Display for Servicing Water Heater Sensor is used Setpoint Display/Change Software Version Display only Select SET ExitingSELECTServiceSETMode Display of Water TemperatureTo Display and Change Temperature Setpoint To Display Flame Sense Current of the Pilot Flame SensorSetpoint Flashes Selectset Idle Status Operational Error Codes and Error History Display Error Code HistoryTo view previous error codes ExitingSELECTServiceSET Mode Error Code Definitions Error Code Shown Water Heater Display Press for 3 seconds to reset control in service modeService Procedure D24-I Thermostat Circuit TestingDo not reset the display from the hard lockout State without correcting the causeService Procedure D24-I Lower Sensor Upper SensorUpper thermister location Applicable models Pilot Operation Testing Service Procedure D24-II131 Pilot Inspection Micro-amp readings Meter ProbeMeter Probe Micro Amp =Main Burner Operation Testing Service Procedure D24-III114 Build-up causing restriction Heater. Refer to Installation InstructionsSee Pilot Inspection section InspectionService Procedure D24-IV Main Burner & Pilot Removal and InspectionMain Burner Removal Main Burner InspectionPilot Burner Removal Pilot Burner InspectionFlame Rod Ferrule NutControl board replacement Control Board ReplacementTo remove lower sensor Service Procedure D24-V Flue Baffle Removal, InspectionService Procedure D24-VI Approximate Anode Rod Locations Generic Parts List 15A 16/16A 17/17A13A 14A 16A 17A6A 11A 10A 18A 15A 19A 12A 20A 19B 20B 17B18B 16B 12B10B 13B 14B 15BBTU/H CO2ECO GFIPage Page Parts@bradfordwhite.com Techserv@bradfordwhite.com