Bedienungsanleitung A.O. Smith BFC60 (Seite 67 von 100) (Englisch)

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Instruction manual BFC 67

12 Service program

12.1 Introduction

The service program is used by the installation

engineer or service and maintenance engineer for:

• Displaying the water heater history;

• Displaying the error history

;

• Displaying the water heater history;

• Display the selected water heater

;

• Switching the pump on or off;

• Setting the service interval

;

• Service mode

;

• Setting legionella prevention.

These sub-menus are briefly described in the

following paragraphs. If you are not generally familiar

with the use of the displays and menus, first read the

relevant chapter (7 "

The control panel").

Note

The notation convention for the service menu is

identical to that of the main menu (11.2 "

Notation

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 (SET POINT) is higher than

the current water temperature, the water heater might

not immediately start the operating cycle (9.3 "

The

appliance's heating cycle"). To prevent excessively

frequent switching on and off, there is a heating

margin. This margin is called the hysteresis. The

standard setting for this margin is 5°C. The operating

cycle starts when the water temperature drops to 5°C

below the SETPOINT and ends when the water

reaches 5°C above the SETPOINT.

Set the hysteresis as follows:

•:

HYSTERESIS UP

The figure shows an example

Set the hysteresis as follows

•:

HYSTERESIS DOWN

12.3 Displaying the error history

Display the error history as follows:

•:

ERROR HISTORY

The controller will display an overview of "Blocking

errors" and "Lock out errors". In both cases, note that

the 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

ERROR HISTORY

is followed by

(B)

The figure shows an example of "Lock out errors". In

this case, the text

ERROR HISTORY

is followed by

(L)

Note

For an overview of all errors and the possible

causes, please refer to the relevant

chapter (13 "Errors").

12.4 Displaying the water heater history

The water heater history sub-menu is used to display

the burning hours, the number of ignitions, the number

of flame errors and the number of ignition errors.

SERVICE MENU

»HYSTERESIS

^ ERROR HISTORY

È APPLIANCE HISTORY

SELECT APPLIANCE

PUMP RELAY

SERVICE INTERVAL

SERVICE OPERATION

ANTI LEGIONELLA

HYSTERESIS UP »3ÉC

ERROR HISTORY(B)

S04 SENSOR ERROR

F06 IONIZATION

È CO2 50 HZ ERROR

ERROR HISTORY(L)

F02 FAN

F07 FLAME ERROR

È ...

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