Bradford-White Corp M4TW60T*F, M2TW50T*F, M4TW50T*F, M2TW65T*F, M1TW40S*F VAC Circuit Trace

Page 30

TTW SERVICE PROCEDURE IX

115 VAC Trace

115 VAC Circuit Trace

WARNING

115 volt potential exposure. Use caution

making voltage checks to avoid personal injury.

Step 1. Verify 115VAC and proper polarity at wall outlet.

Step 2. With unit plugged in and control power switch in the “ON” position verify LED status.

LED status

LED status

None, Control LED not

Short flash, once every

on or flashing.

four seconds.

 

 

 

 

 

 

Waiting for

 

 

call for heat.

 

 

28

Disconnect cord set as

 

 

shown in photo 28

 

 

Using a volt meter set

to volts AC, is there

LED status

LED status

“Heartbeat”, alternates

Various flashing error

bright/dim.

codes.

 

 

 

 

Thermostat calling

Verify error code as

for heat

listed on page 13

29

30

115VAC across

N

Check for damage to Y

Repair damage

AC supply power cord.

 

 

terminals shown in

photo 29 ?

Y

N

Replace Blower

Is there 115VAC

Y

across terminals

 

shown in photo 30 ?

 

 

N

 

 

 

 

 

 

Incorrect supply

 

voltage polarity

 

Locate black & white wires at

connector, It may be necessary to pull back wire sheath to identify wire colors.

(see photo 32)

Reconnect cord set shown in photo 28.

Disconnect wire harness

from gas control (see photo 31).

31

Wire harness

32

Wire sheath pulled back to

identify wire colors

Is there 115VAC

 

across black & white Y

Replace gas

wires as shown in

 

control.

photo 32?

 

 

N

 

 

 

 

 

 

 

Call for technical

support.

Page 30

Check for 115VAC between black & white wires.

-NOTE-

Electronic meter probes required. Use care not to

damage connector during this check.

Page 30

30

Image 30
Contents Service Manual Through-The-Wall Gas Water Heaters For Your Safety Introduction How to Use This Manual Specifications Vent Tables Vent Tables Control Timings Sequence of Operation Steady state operation Pressure Switch/Blower Temperature Fault Troubleshooting Eight-one flash, three Vapor Sensor Burner Inspection and Air Shutter Adjustment Burner Cleaning Pilot Inspection, Testing and Replacement Pressure Switch Testing Pressure Switch Replacement Blower Testing Pressure tapRemove exhaust Blower Temperature Switch Testing Blower Temperature Switch Replacement Gas Control Testing Thermal Well TestingDetermine Water Temperature Inside Tank Gas Control & Thermal Well Removal From Water Heater Gas Control Removal From Thermal WellGas Control Assembly to Thermal Well Flammable Vapor Device Testing Safety Circuit Voltage Trace Red wire leading to blower temperature NVAC Circuit Trace Dip Tube Inspection and Replacement Anode Inspection and Replacement Remove blower to gain access to system from exhaust Flue baffleInner Door Removal Procedure Inner Door Gasket Replacement ProcedureInstallation of Inner Door With Gasket Replace outer jacket burner access door ScreenLok Flame Arrestor Cleaning Glossary of Terms Parts List Parts@bradfordwhite.com Techserv@bradfordwhite.com

M4TW40T*F, M1TW50S*F, M2TW50T*F, M4TW50T*F, M4TW60T*F specifications

Bradford-White Corporation is a leading manufacturer of water heating and storage solutions, known for its commitment to quality and innovation. Among its impressive product lineup, the M2TW65T*F, TW465S65F, TW450S65F, M1TW40S*F, and M1TW60T*F models stand out for their reliability and advanced technology suitable for both residential and commercial applications.

The M2TW65T*F model is distinguished by its high efficiency and performance. It features a 65-gallon capacity, which is ideal for households that require a significant amount of hot water. This model is equipped with an innovative electronic ignition system that enhances energy efficiency while providing reliable hot water on demand. Additionally, it includes advanced insulation technology that minimizes heat loss, ensuring that water remains hot for extended periods.

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Bradford-White's commitment to innovation and quality is reflected in the M2TW65T*F, TW465S65F, TW450S65F, M1TW40S*F, and M1TW60T*F models, making them excellent choices for anyone in need of reliable hot water solutions. With their advanced technologies, durability, and energy efficiency, these water heaters are ideal for diverse applications in modern homes and businesses.