WR 50E47 - 50F47 TROUBLESHOOTING

 

VISUAL CHECK CHART 2

Does Main Burner Ignite?

No - Go Right

Yes - Go Down

Is Manual Knob on Gas Valve in "ON" Position?

Yes - Go Right

No - Go Down

Turn Manual Knob on Gas Valve to "OFF" Position. Connect lo-pressure gauge or manometer to Gas Valve Outlet Pressure Tap.

Go - Right

Turn Manual Knob on Gas Valve to "ON" position. Energize system. Is Outlet Gas Pressure Detected?

Yes - Go Right

No - Go Down

Is Outlet Gas Pressure at the Nameplate Rating?

Yes - Go Right

No - Go Down

Purge System of Air. Energize System and Check for Proper Operation.

Go to Chart 3

Turn Manual Knob on Gas Valve to "ON" position. Energize the System and Check for Proper Operation.
 

Continue Down

Correct Gas Supply Pressure. Energize System and Check for Proper Operation.
 
   

Restore gas supply at source. Energize System and Check for Proper Operation.

Is Gas Available at the Inlet Piping?

No - Go Left

Yes - Go Right

Disconnect Electrical Leads from Gas Valve. Energize System. Is 25 Volts Present Across Leads After Ignitor Warm-Up Duration?

Yes - Go Right

No - Go Down

Replace Gas Valve. Energize System and Check for Proper Operation.
       

With System Energized, is 25 Volts Present Across MV & MV Terminals of Module After Ignitor Warm-Up Period?

Yes - Go Right

No - Go Down

Replace Wire Leads to Gas Valve. Energize System and Check for Proper Operation
       

Replace Module. Energize System and Check for Proper Operation.
 

Back to 50E47 Troubleshooting Guide