Bradford White Water Heater M1TW50S6FBN

Gas Control & Thermal Well Removal From Water Heater

Position gas valve power switch to the “OFF” position and unplug heater from power supply.

Drain heater to a point below the gas control level.

Turn off gas supply to water heater and disconnect gas piping from gas control.

Disconnect wire harnesses and burner assembly from gas control.

Remove gas control & thermal well by rotating flats of Thermal Well counter clockwise (1-5/16" wrench).

Gas Control Removal From Thermal Well

Position gas control power switch to the “OFF” position and unplug water heater from power supply.

Turn off gas supply to water heater and disconnect gas piping from gas control.

Position gas control power switch to the “OFF” position.

Unplug blower power cord from wall outlet.

Disconnect vent system from exhaust adapter on top of blower.

Remove exhaust adapter from blower using a blade screwdriver and retain for use on new blower.

Remove the three blower mounting screws using a ¼" nut driver.

Remove blower with gasket from water heater.

Position gas control power switch to the “OFF” position and unplug heater from wall outlet.

Turn off gas supply to water heater.

Remove outer jacket door and slide inner door open from left to right.

Disconnect pilot tube (7/16 wrench) and feedline (¾ wrench) from gas control.

Disconnect igniter/flame sensor wire from gas control.

Remove burner assembly from combustion chamber.

Thoroughly inspect burner surface area and burner port area and remove any loose debris.

For cast iron burners, inspect for any debris build up inside burner casting.

Remove Blower To Gain Access To Flue Baffle

Position gas control power switch to the “OFF” position and unplug blower from wall outlet.

Disconnect vent system from exhaust adapter on top of blower.

Remove the three blower mounting screws using a ¼" nut driver.

Remove blower with gasket from water heater.

Remove flue baffle from Heater.

Inspect baffle for deterioration, missing restrictors, and clean any scale or debris build up. Replace with new baffle as necessary.

Reinstall baffle into flue tube ensuring baffle hanger tab is inserted into notch location at the top of the flue tube.

Remove three screws from control access cover on blower and remove cover

Is there 10 to 13 VAC between red wire leading to blower temperature switch and green ground wire?

Is LED on gas valve flashing the “heartbeat” code (alternating bright/dim)?

Is there 10 to 13 VAC between yellow wire leading from pressure switch and green ground wire?

Is there continuity through blower temperature switch?

Check for issues at switch terminals

Do you hear or can you see the igniter sparking?