Bradford White Water Heater M1TW40S10FBN

Position gas control power switch to 'OFF' position.

Remove the three screws from control access cover on blower assembly and remove cover.

Carefully remove pressure switch from blower housing.

Disconnect tubing from pressure switch.

Disconnect yellow wires from pressure switch.

Reconnect wires to new pressure switch.

Reconnect tubing to new pressure switch.

Carefully position pressure switch into blower housing.

Cast Iron Burner Air Shutter Adjustment

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

Adjust air shutter for proper burning

Is the flame blue with a minimum of yellow tips?

Is the burner operation noisy or is there soot formation?

Close inner door and observe burner operation

Does the burner operate as adjusted with the inner door closed?

Verify 120VAC and proper polarity at wall outlet.

With unit plugged in and control power switch in the “ON” position, verify LED status.

Using a volt meter set to volts AC, is there 120VAC across terminals shown in photo 29?

Is there 120VAC across terminals shown in photo 30?

Is there 120VAC across black & white wires as shown in photo 32?

Check for 120VAC between black & white wires.

Verify error code as listed on page 13.

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 are inserted into notch location at the top of the flue tube.

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 (blade screw driver) and retain for use on new blower.

Remove the three blower mounting screws (¼" nut driver).

Remove blower with gasket from water heater.