is

 

 

 

 

 

Code + Description

Cause

Solution

Remark

 

 

 

 

 

 

 

F04 (lock out error)

No gas

1.

Open the main gas valve and/or the manual gas valve supplying

To repair the gas supply, contact your installation engineer

 

Three unsuccessful

 

 

the water heater

 

 

 

2.

Check the supply pressure to the gas control

 

 

ignition attempts.

 

 

 

 

3.

If necessary, repair the gas supply

 

 

 

 

 

 

 

 

 

 

 

 

Air in the gas pipes

Bleed the air out of the gas pipe

See Checking the supply pressure and burner pressure for how to

 

 

 

 

 

bleed air from the gas line, and measure the supply pressure and

 

 

No burner pressure

1.

Check the burner pressure to the gas control

 

 

burner pressure.

 

 

 

2.

Check that the gas valve(s) open and shut correctly

 

 

 

To replace the necessary parts, you must contact your installation

 

 

 

3.

If necessary, replace the gas control.

engineer

 

 

 

 

 

 

 

 

 

 

 

 

Defect in the hot

1.

Check that the hot surface igniter is correctly connected (JP2).

If the error persists, contact your installation engineer.

 

 

surface igniter circuit

2.

Check the wiring of the hot surface igniter.

To replace the necessary parts, you must contact your installation

 

 

 

engineer

 

 

 

3.

Measure the resistance across the hot surface igniter. This must

 

 

 

 

 

 

 

 

lie between 2 and 5 ohms.

 

 

 

 

4.

Check that the hot surface igniter lights up during ignition.

 

 

 

 

5.

If necessary, replace the hot surface igniter.

 

 

 

 

 

 

 

 

 

Defect in the ionisation

1.

Check that the flame probe is correctly connected (JP2)

 

 

 

circuit

2.

Check the wiring of the flame probe

 

 

 

 

 

 

 

 

3.

Measure the ionisation current. This must be at least 1.5

 

 

 

 

 

microamps.

 

 

 

 

4.

Replace the wiring if necessary.

 

 

 

 

 

 

 

 

Supply voltage too low

Check the supply voltage, this must be 230 VAC (-15%, +10%).

 

 

 

 

 

 

 

 

F05 (lock out error)

Incorrect roof or wall

1.

Check that the correct roof or wall flue conduit (3.9 "Air supply

If the error cannot be resolved or is persistent, contact your

 

 

conduit.

 

and flue") has been fitted.

installation engineer

 

Too many flame errors

Recirculating flue

2.

If necessary, install the correct roof or wall conduit.

 

 

have been signalled.

gases.

 

 

3.

Check that the roof or wall conduit discharges into a permitted

 

 

 

 

 

 

 

 

 

area.

 

 

 

 

 

 

 

 

Instruction manual BFC

77

Page 76 Page 78
Page 77
Image 77
A.O. Smith BFC - 30, BFC - 60 service manual Code + Description Cause Solution Remark F04 lock out error, F05 lock out error
Page 76 Page 78

BFC - 30, BFC - 60 specifications

A.O. Smith is a well-regarded name in the water heating industry, known for producing innovative and efficient water heaters. Among their renowned products are the BFC - 60 and BFC - 30 models, which have gained popularity for their performance and reliability.

The A.O. Smith BFC - 60 and BFC - 30 are both designed to meet the diverse needs of residential and commercial users. The BFC - 60 has a capacity of 60 gallons, making it ideal for larger households or commercial settings where hot water demand is high. Meanwhile, the BFC - 30, with its 30-gallon capacity, caters to smaller households or establishments with lower hot water requirements.

One of the standout features of both models is their advanced heating technology. They are equipped with a high-efficiency burner system, which enhances the heating process while minimizing energy consumption. This means that users experience quicker recovery times and can enjoy a steady supply of hot water without the long wait associated with traditional heaters. The BFC series is designed to save energy, aligning with modern demands for sustainability.

Another significant characteristic of these models is their durable construction. Made with high-quality materials, including glass-lined tanks, they are built to resist corrosion and extend the lifespan of the water heater. This durability contributes to fewer maintenance requirements, giving users peace of mind.

In terms of safety, A.O. Smith has incorporated numerous features into the BFC series. Both models come with safety valves and thermostat controls to ensure that water is heated to appropriate temperatures, reducing the risk of scalding and malfunction. Additionally, their design allows for easy installation and maintenance, making them a user-friendly option.

Another aspect that distinguishes the BFC series is its compact design. Both models have a space-saving profile, making them suitable for installation in various locations, including tight utility rooms or basements. This flexibility allows homeowners and businesses to maximize their space without sacrificing performance.

Overall, the A.O. Smith BFC - 60 and BFC - 30 are exemplary water heating solutions that combine efficiency, durability, and safety. With their advanced features and technologies, they are an excellent choice for anyone in need of reliable hot water, ensuring comfort and satisfaction for years to come.
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