is

12 Service program

12.1 Introduction

The service program is used by the installation engineer or service and maintenance engineer for:

•Setting the hysteresis;

•Displaying the error history;

•Displaying the appliance history;

•Display the selected appliance;

•Switching the pump on or off;

•Setting the service interval;

•Setting the display contrast;

•Setting the display backlight time;

•Setting the display scroll speed.

SERVICE MENU

»HYSTERESE

^HISTORY OF ERRORS È APPLIANCE HISTORY

SELECT APPLIANCE

PUMP RELAY

SERVICE INTERVAL

CONTRAST DISPLAY

TIME BACKLIGHT

SCROLLSPEED

These sub-menus are briefly described in the following paragraphs. If you are not familiar in general with how to use the displays and menus, first read the relevant section (7 "The control panel").

Note

The notation convention for the service menu is identical to that of the main menu (11.2 "Notational convention for menu-related instructions"). The

difference is, you use to bring up the service program, instead of which brings up the main menu.

12.2 Setting the hysteresis

If the preset temperature (SETPOINT) is higher than the current water temperature, then the appliance might not immediately start the heating

cycle (9.3 "The appliance's heating cycle"). To prevent excessively frequent switching on and off, there is a heating margin. We refer to this margin as the

hysteresis. The standard setting for this margin is 2°C. The heating cycle starts if the water temperature drops to 2°C below the SETPOINT and ends when the water reaches 2°C above the SETPOINT.

HYSTERESE UP »3ÉC

Set the hysteresis via:

•: HYSTERESE UP

The figure shows an example

Set the hysteresis via:

•: HYSTERESE DOWN

12.3Displaying the error history

Display the error history as follows:

• : HISTORY OF ERRORS

The controller will display an overview of "Blocking errors" and "Lock out errors". In both cases, the electronic controller reserves 15 lines for the last 15 error messages. If there are fewer than 15 error messages, an ellipsis (...) is displayed. The display

first shows the "Blocking errors". When is pressed, the "Lock out errors" are then displayed.

The figure shows an example of "Blocking errors". In this case, the text HISTORY OF ERRORS is followed by (B).

HISTORY OF ERRORS(B)

S04 SENSOR ERROR

F06 IONIZATION

È CO2 50 HZ ERROR

The figure shows an example of "Lock out errors". In this case, the text HISTORY OF ERRORS is followed by (L).

HISTORY OF ERRORS(L) F02 FAN

F07 FLAME ERROR È ...

Note

For an overview of all errors and the possible causes, please refer to the relevant

chapter (13 "Troubleshooting").

Instruction manual BFC

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A.O. Smith BFC - 30, BFC - 60 service manual Service program, Setting the hysteresis, Displaying the error history
Page 66 Page 68

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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