BLDV300NSCSL Gas Fireplace Parts

Monessen BLDV300NSCSL

Find replacement parts, manuals, troubleshooting help, and compatibility information for the Monessen BLDV300NSCSL Gas Fireplace.

Model Information

The Monessen BLDV300NSCSL is a Gas Fireplace configured for Natural Gas and is a Direc-Vent unit with a Electronic ignition/control type using the Signature Command System control system.

Before ordering parts for this model, confirm the exact model number, gas type, vent type, ignition/control system, and serial number range. Some replacement parts may vary by gas type, vent type, control system, production date.

Common Replacement Parts

Common replacement parts for this model may include pilot assemblies, gas valves, ignition modules, remotes, switches, blowers, or other service parts depending on the exact configuration.

Downloads

Parts List

Signature Command System Troubleshooting Wizard

Control System: Signature Command System

Interactive diagnostic guide for this fireplace system.

{"start":"sc_start","steps":{"sc_start":{"title":"Signature Command Troubleshooting","question":"Begin Signature Command troubleshooting.","help":"This guide is for fireplaces using the Signature Command control system.","professionalHelp":"","showContactForm":false,"stop":false,"options":[{"text":"Continue","next":"master_switch_on","pathText":"Continue","showContactForm":false}]},"master_switch_on":{"title":"Master Switch On","question":"Is the Master Switch on?","help":"Turn the master switch to the ON position before continuing.","professionalHelp":"","showContactForm":true,"stop":false,"options":[{"text":"Yes","next":"motor_tick_beep","pathText":"Yes","showContactForm":false},{"text":"No","next":"check_power","pathText":"No","showContactForm":true}]},"motor_tick_beep":{"title":"Motor Tick and Beep","question":"Do you hear ticking from the motor and a beep?","help":"Listen for motor activity and a beep after the master switch is turned on.","professionalHelp":"If there is no response, power or wiring may need to be checked.","showContactForm":true,"stop":false,"options":[{"text":"Yes","next":"depress_on_button","pathText":"Yes","showContactForm":false},{"text":"No","next":"check_power","pathText":"No","showContactForm":true}]},"check_power":{"title":"Check for Power","question":"Check for power to the Signature Command system.","help":"Verify battery or AC power at the command center/control board. The guide shows checking the power supply and notes the master switch must be ON.","professionalHelp":"Electrical testing should be performed by a qualified service professional if you are not trained.","showContactForm":true,"stop":true,"options":[]},"depress_on_button":{"title":"Press ON Button","question":"Press the ON button. Does the system respond or beep?","help":"Use the ON button on the control center or remote as appropriate for this fireplace.","professionalHelp":"","showContactForm":true,"stop":false,"options":[{"text":"System Beeps / Responds","next":"pilot_solenoid_igniter","pathText":"System responded","showContactForm":false},{"text":"Error Code","next":"error_code","pathText":"Error code displayed","showContactForm":true}]},"error_code":{"title":"Error Codes Before Ignition","question":"What error code are you seeing?","help":"Possible pre-ignition error codes include 1 red flash, 2 red flashes, or 3 red flashes.","professionalHelp":"Record the exact error code before requesting help.","showContactForm":true,"stop":false,"options":[{"text":"1 Red Flash","next":"conversion_cover_missing","pathText":"1 Red Flash","showContactForm":true},{"text":"2 Red Flashes","next":"spark_fail","pathText":"2 Red Flashes","showContactForm":true},{"text":"3 Red Flashes","next":"no_sensor_signal","pathText":"3 Red Flashes","showContactForm":true},{"text":"No Error Code","next":"pilot_solenoid_igniter","pathText":"No error code","showContactForm":false}]},"conversion_cover_missing":{"title":"1 Red Flash - Conversion Cover Missing","question":"A 1 red flash error indicates the conversion cover/chip may be missing or not seated correctly.","help":"Remove the conversion chip, make sure all pins are clean and straight, then reinstall it into the control board.","professionalHelp":"If the code remains after reseating the chip, request professional help.","showContactForm":true,"stop":true,"options":[]},"spark_fail":{"title":"2 Red Flashes - Spark Fail","question":"A 2 red flash error indicates spark fail.","help":"Check for proper ground to the valve bracket. Inspect the igniter wire for damage or a short to ground.","professionalHelp":"Ignition testing involves gas and electrical components. Request professional help if unsure.","showContactForm":true,"stop":true,"options":[]},"no_sensor_signal":{"title":"3 Red Flashes - No Sensor Signal","question":"A 3 red flash error indicates no sensor signal.","help":"Check ground to the valve terminal, clean the flame sensor, inspect the sensor wire, and verify flame-sensing operation.","professionalHelp":"Flame sensor diagnosis may require meter testing. Request professional help if unsure.","showContactForm":true,"stop":true,"options":[]},"pilot_solenoid_igniter":{"title":"Pilot Solenoid and Igniter","question":"Does the pilot solenoid snap and does the igniter start ticking?","help":"You should hear a snap from the pilot solenoid and ticking from the igniter.","professionalHelp":"","showContactForm":true,"stop":false,"options":[{"text":"Yes","next":"pilot_lights","pathText":"Yes","showContactForm":false},{"text":"No","next":"pilot_igniter_check","pathText":"No","showContactForm":true}]},"pilot_igniter_check":{"title":"Pilot and Igniter Check","question":"The pilot solenoid or igniter is not operating correctly.","help":"Check for 2-4 VDC to the pilot solenoid during opening, then approximately 0.15-0.3 VDC to hold. Also inspect spark location, igniter wire, pilot hood alignment, and ground.","professionalHelp":"This diagnosis may require meter testing and should be handled by a qualified service professional.","showContactForm":true,"stop":true,"options":[]},"pilot_lights":{"title":"Pilot Lights","question":"Does the pilot light?","help":"Look for a small pilot flame at the pilot assembly.","professionalHelp":"","showContactForm":true,"stop":false,"options":[{"text":"Yes","next":"pilot_stays_lit","pathText":"Yes","showContactForm":false},{"text":"No","next":"gas_pressure_igniter_alignment","pathText":"No","showContactForm":true}]},"gas_pressure_igniter_alignment":{"title":"Pilot Does Not Light","question":"The pilot did not light.","help":"Possible causes include incorrect gas pressure, igniter alignment problems, pilot blockage, pilot voltage problems, or spark not reaching the proper point on the pilot hood.","professionalHelp":"Gas pressure and ignition diagnosis should be performed by a qualified service professional.","showContactForm":true,"stop":true,"options":[]},"pilot_stays_lit":{"title":"Pilot Stays Lit","question":"Does the pilot stay lit, or does it run for about 30 seconds and go out?","help":"If the pilot runs briefly and then shuts down, the flame sensor may not be proving flame to the control board.","professionalHelp":"","showContactForm":true,"stop":false,"options":[{"text":"Pilot stays lit","next":"main_burner_lights","pathText":"Pilot stays lit","showContactForm":false},{"text":"Pilot goes out after about 30 seconds","next":"pilot_30_seconds_out","pathText":"Pilot goes out after 30 seconds","showContactForm":true}]},"pilot_30_seconds_out":{"title":"Pilot Goes Out After 30 Seconds","question":"The pilot lights but goes out after about 30 seconds.","help":"This often indicates the flame sensor did not rectify flame to the control board. Check ground to the valve bracket, flame contact on the sensor, sensor cleanliness, pilot hood/sensor alignment, and flame sensor microamp signal.","professionalHelp":"This usually requires meter testing and should be diagnosed by a qualified service professional.","showContactForm":true,"stop":true,"options":[]},"main_burner_lights":{"title":"Main Burner Lights","question":"Does the main burner light?","help":"After pilot rectification, the control board should energize the main valve solenoid.","professionalHelp":"","showContactForm":true,"stop":false,"options":[{"text":"Yes","next":"burner_stays_on","pathText":"Yes","showContactForm":false},{"text":"No","next":"valve_not_receiving_voltage","pathText":"No","showContactForm":true}]},"valve_not_receiving_voltage":{"title":"Main Burner Does Not Light","question":"The main burner did not light.","help":"The board may not be sending proper voltage to the main valve solenoid, or gas pressure may be outside the allowable range.","professionalHelp":"Voltage, valve, and gas pressure testing should be performed by a qualified service professional.","showContactForm":true,"stop":true,"options":[]},"burner_stays_on":{"title":"Burner Stays On","question":"Does the unit stay on after the burner lights?","help":"If the unit goes out immediately after the burner lights, possible causes include poor ground, lack of power, gas pressure issue, or valve/control issue.","professionalHelp":"","showContactForm":true,"stop":false,"options":[{"text":"Yes","next":"shutdown_sequence","pathText":"Yes","showContactForm":false},{"text":"No, goes out immediately","next":"burner_goes_out_after_light","pathText":"Burner goes out immediately","showContactForm":true}]},"burner_goes_out_after_light":{"title":"Unit Goes Out After Burner Lights","question":"The unit goes out immediately after the burner lights.","help":"Possible causes include poor ground, lack of power, gas pressure outside range, or valve solenoid/control board issue.","professionalHelp":"This requires electrical, grounding, and gas-pressure diagnosis. Request professional help.","showContactForm":true,"stop":true,"options":[]},"shutdown_sequence":{"title":"Shutdown Sequence","question":"When OFF is pressed, do the flames go to medium, then low, then off?","help":"Observe the flame shutdown sequence carefully.","professionalHelp":"","showContactForm":true,"stop":false,"options":[{"text":"Yes","next":"all_operations_functional","pathText":"Normal shutdown sequence","showContactForm":false},{"text":"Flame goes out immediately","next":"memory_function_reset","pathText":"Flame goes out immediately","showContactForm":true},{"text":"Flame goes to low, then off","next":"memory_function_reset","pathText":"Flame goes to low, then off","showContactForm":true},{"text":"No flame adjustment / no motor sound","next":"motor_troubleshooting","pathText":"No flame adjustment or motor sound","showContactForm":true},{"text":"Need AC/accessory info","next":"ac_info_menu","pathText":"Need AC/accessory info","showContactForm":true}]},"memory_function_reset":{"title":"Memory Function Reset","question":"Try resetting the memory function.","help":"Cycle the unit to the high position by pressing ON three times. Once at high, hold OFF for 3 seconds or turn the wall switch off. This should reset the system to high flame at startup.","professionalHelp":"If the system still behaves incorrectly after reset, request professional help.","showContactForm":true,"stop":true,"options":[]},"motor_troubleshooting":{"title":"Motor Troubleshooting","question":"There is no flame adjustment or no motor sound.","help":"Check whether the motor tries to cycle the valve. If jammed or misaligned, the motor may need to be disconnected, checked in open air, and reseated. Do not overtighten the screws.","professionalHelp":"Motor and valve troubleshooting should be performed carefully by a qualified service professional.","showContactForm":true,"stop":true,"options":[]},"all_operations_functional":{"title":"System Operating Normally","question":"All major Signature Command operations appear functional.","help":"The troubleshooting flow completed without identifying a major operational fault.","professionalHelp":"","showContactForm":false,"stop":true,"options":[]},"ac_info_menu":{"title":"AC and Accessory Information","question":"What AC or accessory information do you need?","help":"Signature Command systems may use an AC adapter or SCSACM module depending on the appliance and accessory configuration.","professionalHelp":"AC voltage testing should be performed by a qualified person.","showContactForm":true,"stop":false,"options":[{"text":"AC Adapter","next":"ac_adapter","pathText":"AC adapter","showContactForm":true},{"text":"SCSACM Module","next":"scsacm_module","pathText":"SCSACM module","showContactForm":true},{"text":"Blower Terminals","next":"scsacm_blower","pathText":"Blower terminals","showContactForm":true},{"text":"Light Terminals","next":"scsacm_light","pathText":"Light terminals","showContactForm":true},{"text":"Auxiliary Terminals","next":"scsacm_aux","pathText":"Auxiliary terminals","showContactForm":true}]},"ac_adapter":{"title":"AC Adapter","question":"Check the AC adapter.","help":"The basic Signature Command AC adapter transforms 120 VAC to approximately 6 VDC. Verify it is plugged into a working 120 VAC outlet.","professionalHelp":"AC testing should be performed safely by a qualified person.","showContactForm":true,"stop":true,"options":[]},"scsacm_module":{"title":"SCSACM Module","question":"Check the SCSACM module.","help":"The SCSACM accessory AC module transforms 120 VAC to approximately 6 VDC and supplies accessory control functions.","professionalHelp":"AC module testing should be performed safely by a qualified person.","showContactForm":true,"stop":true,"options":[]},"scsacm_blower":{"title":"SCSACM Blower Terminals","question":"Check blower terminal behavior.","help":"Blower terminals may show 120 VAC open circuit, but under load high is about 115-118 VAC, medium about 95-100 VAC, and low about 85-90 VAC. Blower operation may require flames running.","professionalHelp":"Line-voltage testing should be performed by a qualified person.","showContactForm":true,"stop":true,"options":[]},"scsacm_light":{"title":"SCSACM Light Terminals","question":"Check light terminal behavior.","help":"The light terminals work like a dimmer. Open-circuit readings may be about 115-118 VAC on high, 95-100 VAC on medium, and 65-70 VAC on low. Lights may operate with flames on or off.","professionalHelp":"Line-voltage testing should be performed by a qualified person.","showContactForm":true,"stop":true,"options":[]},"scsacm_aux":{"title":"SCSACM Auxiliary Terminals","question":"Check auxiliary terminal behavior.","help":"The auxiliary terminals are 120 VAC on/off only. They do not provide reduced voltage. Rear burner shutdown systems may use the AUX terminal.","professionalHelp":"Line-voltage testing should be performed by a qualified person.","showContactForm":true,"stop":true,"options":[]}}}