Справочник Пользователя для Majestic Appliances NVBR36

17

Majestic Fireplaces

®

 NVB Series B-Vent

7412950

FP649

• Turn gas supply off
• Turn ON/OFF Switch
  to call for heat. 

NO

NO

NO

NO

NO

NO

NO

Spark across

Ignitor Sensor gap

Power to module

(24V nominal)

YES

YES

YES

YES

YES

YES

YES

• Turn gas on

Pilot burner lights?

Spark stops when pilot 

is lit?

Main Burner lights?

• Replace Module

• Line Voltage (120VAC)
• Low Voltage Transformer
  (19.5 minimum VAC)
• ON/OFF Switch
• Wiring connections
• Thermodisk

•  Check continuity of ignition cable and ground wire.
•  Clean flame rod.
•  Check electrical connections beween flame rod and module.
•  Check for cracked ceramic flame rod insulator.
•  Check that pilot flame covers flame rod and is steady blue.
•  Adjust pilot flame.
•  If problem persists, replace module.

Unplug Ignition Lead

and check spark

at module

(24VAC nominal) 

Spark OK?

•  Check ignition cable, ground wiring, Ceramic Insulator and gap. Correct as necessary
•  Check boot of ignition cable for signs of melting or buckling. Take protective
   actions to shield cable and boot from excessive temperatures.

•  Check for 24VAC across MV-MV/PV terminals. If no voltage, replace module.
•  Check electrical connections between module and gas control. If okay, replace gas 
   control or gas control operator.

•  Check for continuity of igniton cable and ground wire. NOTE: If ground is poor or 
   erratic, shutdowns may occur occasionally even though operation is normal
   at time of checkout.
•  Check that the pilot flame covers flame rod and is steady and blue.
•  If checks are okay, replace module.

Troubleshooting

Ends

•  Check that all manual gas valves are open, supply tubing and pressures are good,
   and pilot burner orifice is not blocked.
•  Check electrical connections between module and pilot operator on gas control.
•  Check for 24VAC across PV-MV/PV terminals on module. If voltage is okay, replace
   gas control. If not, replace module.

NOTE: If S8600B goes into lockout, reset system.

NOTE: If S8600B goes into lockout, reset system.

CHECK :

System runs until

ON/OFF switch is in

"OFF" position