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 (11.1 "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

65

Page 65
Image 65
A.O. Smith BFC - 80, BFC -100 service manual Service program, Setting the hysteresis, Displaying the error history

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.