is

 

 

 

 

 

Code + Description

Cause

Solution

Remark

 

 

 

 

 

 

 

F10 (lock out error)

Pressure switch not

1.

Check the running speed of the fan (12.5 "Display the selected

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

 

Restriction on the

closing

 

appliance")

installation engineer

 

 

2.

Check that the hoses on the pressure switch and the air supply

To replace the necessary parts, you must contact your installation

 

number of ignition

 

 

hose between fan and burner are correctly fitted. Refit them if

engineer

 

attempts based on

 

 

 

 

 

 

necessary

 

 

pressure switch state

 

 

 

 

changes.

 

3.

Check for cracks in the hoses on the pressure switch and in the

 

 

 

 

 

air supply hose between fan and burner. If necessary, replace

 

 

 

 

 

the hoses.

 

 

 

 

4.

Check that the flue gas outlet is compliant (3.9 "Air supply and

 

 

 

 

 

flue").

 

 

 

 

5.

Check for blockage in the flue gas discharge. Remove any

 

 

 

 

 

blockage that may be present

 

 

 

 

6.

Check for blockage in the condensation water discharge.

 

 

 

 

 

Remove any blockage that may be present.

 

 

 

 

7.

Measure the pressure differential across the pressure switch.

 

 

 

 

 

See the table in Preparation for

 

 

 

 

 

maintenance (15.2 "Preparation for maintenance"). If there is

 

 

 

 

 

insufficient pressure differential, clean the heat exchanger. If the

 

 

 

 

 

pressure differential is acceptable, check that the pressure

 

 

 

 

 

switch is closing, using a multimeter.

 

 

 

 

 

 

 

F11 (blocking error)

Defective gas valves

See F07.

 

 

Flame detection with

 

 

 

 

 

closed gas valve.

 

 

 

 

 

Instruction manual BFC

78

Page 78
Image 78
A.O. Smith BFC -100, BFC - 80 service manual Code + Description Cause Solution Remark F10 lock out error, F11 blocking error

BFC - 80, BFC -100 specifications

A.O. Smith is a renowned name in the water heater industry, and its BFC series, which includes the BFC-100 and BFC-80 models, exemplifies their commitment to innovation and efficiency. These units are designed to meet the demanding needs of both residential and commercial applications, providing reliable hot water solutions.

The A.O. Smith BFC-100 and BFC-80 are distinguished by their high capacity and robust design. The BFC-100 model boasts a capacity of 100 gallons, while the BFC-80 is ideal for those requiring 80 gallons. This makes them suitable for larger households or commercial establishments where hot water demand can be significant.

One of the primary features of these models is their advanced heating technology. Both units utilize a high-efficiency burner that ensures rapid heating and minimal energy consumption. This means users benefit from shorter wait times for hot water, reducing overall energy costs. The BFC series is also equipped with a special flame retention head that enhances combustion efficiency and prolongs the lifespan of the unit.

In terms of construction, the BFC-100 and BFC-80 models are built with high-quality materials that enhance durability and resistance to corrosion. The tanks are insulated with high-density foam, which improves energy retention and helps maintain water temperature for longer periods. This is crucial for conserving energy and minimizing heating costs.

Safety is a top priority for A.O. Smith, and the BFC series reflects this commitment. Each unit comes with a range of safety features, including a temperature and pressure relief valve that prevents overheating and excessive pressure buildup. Additionally, they are designed to meet strict industry standards, ensuring peace of mind for users.

Installation of both models is straightforward, with flexible venting options that accommodate various building layouts. Whether you are upgrading an existing water heating system or installing a new one, the BFC series is designed to integrate seamlessly.

In summary, the A.O. Smith BFC-100 and BFC-80 are excellent options for those seeking reliable, efficient, and durable water heating solutions. With their impressive capacity, advanced heating technology, robust construction, and safety features, these models stand out in the market and are sure to meet the hot water needs of any household or commercial space. Whether for residential use or in a business setting, A.O. Smith’s BFC series represents quality and innovation in hot water heating.