Troubleshooting

Observe the green LED on the water heater gas con- trol. Error codes are displayed with a 3 second pause before repeating. Once the error code is known, check and repair the water heater, as recommended in the table below.

Green LED

LED Status

Control Status

 

Probable Cause

Service Procedure

None (LED

 

Control power switch in "OFF"

 

not on or

No electrical power

position.

Turn Power On

flashing)

 

Supply voltage interrupted.

 

One short

Stand-by mode,

Temperature demand is satisfied

 

flash every

Thermostat is

Normal operation

four seconds

satisfied (no faults)

(no call for heat)

 

Alternates

 

 

 

 

bright and

Thermostat calling

Tank temperature below

Normal operation

dim

for heat (no fault)

setpoint of thermostat

 

(heartbeat)

 

 

 

 

 

 

1.

Unstable pilot

 

 

 

2.

Pilot tube blocked or restricted

1. See Burner Inspection on

Short flash

Weak pilot signal

3.

Oxidation build-up on pilot

page 20

once every

electrode

2-4. See Pilot Inspection,

second

on last call for heat

4.

Wire damage to pilot

Testing and Replacement on

 

 

assembly or bad connection at

page 22

 

 

gas control

 

 

 

 

 

 

 

 

1.

Pressure switch tubing kinked

 

Two flashes,

Pressure switch not

or blocked

1-3. See Pressure Switch

three second

working-closed

2.

Blocked pressure tap on

Testing on page 25

pause

position

switch or blower

 

 

 

3.

Faulty pressure switch

 

 

 

1.

Vent blockage or improper

 

 

 

vent configuration

 

 

 

2.

Pressure switch tubing kinked

1. Check vent or vent tables

Three

Pressure switch or

or blocked

2-3. See Pressure Switch

flashes,

blower temperature

3.

Faulty pressure switch

Testing on page 25

three second

switch not working-

4.

Blower not spinning up to

4. See Blower Testing on

pause

open position

speed

page 28

5.

Blower temperature or

5-6. See blower Temperature

 

 

 

 

exhaust temperature too high

Switch Testing on page 31

 

 

6.

Faulty blower temperature

 

 

 

switch

 

Four flashes,

Excessive tank

1.

Thermal well sensor out of

1. Test Gas Control & Thermal

temperature,

Well

three second

calibration

system must be

2. Replace gas control if

pause

2.

Faulty gas control

reset

necessary

 

 

 

Five flashes,

False pilot flame

 

 

 

three second

Pilot valve stuck in open position

Replace gas control

present

pause

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 17

17

Page 17
Image 17
Bradford-White Corp U2TW65T*FRN, UTW450S60FR*N, UTW465S60FR*N, U2TW50T*FRN Troubleshooting, Probable Cause Service Procedure

U1TW40S*FRN, U2TW65T*FRN, UTW450S60FR*N, U1TW60T*FRN, UTW465S60FR*N specifications

Bradford-White Corp has long been a reputable manufacturer in the water heating industry, known for delivering high-quality and reliable products. Among their diverse range of water heaters, the U1TW40S*FRN, U1TW50S*FRN, U1TW60T*FRN, UTW465S60FR*N, and UTW450S60FR*N models stand out for their advanced features and technologies designed to meet varying hot water demands.

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In terms of ease of use, all models come with user-friendly controls that allow for easy temperature adjustments and monitoring, ensuring that users can customize their hot water needs conveniently. Additionally, features such as intuitive diagnostics enable quick troubleshooting, reducing downtime and maintenance efforts.

In conclusion, Bradford-White’s U1TW and UTW series water heaters are engineered to offer efficiency, durability, and user-friendly operation. With their advanced technology, excellent insulation, and robust construction, these models are a solid choice for anyone looking to invest in reliable hot water solutions for their home. Whether for a busy family or more modest hot water needs, these units provide peace of mind and consistent performance.