A.O. Smith SGE Service program, Setting the hysteresis, Displaying the error history

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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

•Setting the service interval

•Setting legionella prevention

•Solar heating system configuration

•Setting the central heating configuration

SERVICE MENU

»HYSTERESE

^HISTORY OF ERRORS È APPLIANCE HISTORY

SELECT APPLIANCE

SERVICE INTERVAL

ANTI LEGIONELLA

SETTINGS SOLAR

SETTINGS HEATING

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 chapter (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

Call up the menu to set the hysteresis as follows:

: HYSTERESE DOWN

HYSTERESE DOWN »3ÉC

Appliance	Default	Range
40	- °C.	- °C.
60	5 °C.	2 ... 7 °C.

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").

12.4 Displaying the appliance history

The appliance history submenu is used to display the burning hours, the number of ignitions, the number of flame errors and the number of ignition errors.

Call up the menu for displaying the appliance history as follows:

•: APPLIANCE HISTORY

The figure shows an example.

Instruction manual SGE 73