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8Status of the appliance
8.1Introduction
Topics covered in this chapter:
•Operating modes;
•Error conditions;
8.2Operating modes
When running, the appliance has three basic operating modes, namely:
•ELECTRICALLY ISOLATED
In this mode, the appliance is off and no components are live. The isolator (switch between the appliance and the mains power supply) is off. On the control panel:
-the ON/OFF switch is at position 0;
-the green light is dimmed.
•OFF
In this mode, the frost protection is activated. The isolator is at position I. On the control panel:
-the ON/OFF switch is at position 0;
-the green light is lit.
•ON
Once the cause has been rectified, the appliance will restart automatically.
•Blocking errors
You can recognize this condition when the appliance makes no attempt to start the heating cycle, despite the fact that the water is colder than the temperature set with the control thermostat (7.5 "Control thermostat"). These errors disappear automatically once the cause of the error has been removed, after which the appliance resumes operation by itself.
The cause of the error is not shown on the control panel. For a comprehensive overview of errors, refer to troubleshooting. (11 "Troubleshooting")
As an end user, if you find the appliance in an error condition, you can attempt to start the appliance running by pressing the rest button once. However, if the error returns or occurs several times in a short time, you must contact your service and maintenance engineer.
In this mode, the appliance continuously responds to the heat demand. On the control panel:
-the ON/OFF switch is at position I;
-the water temperature can be set using the rotary knob of the control
thermostat (7.5 "Control thermostat");
-the green light is lit.
8.3Error conditions
When the appliance is in an error condition, the heat demand is (temporarily) ignored, and you cannot draw hot water. The frost protection is also out of action.
The error conditions are divided into three groups:
•Lock out errors of the burner control
In this event, the red error light will be lit in the reset button on the control panel. The burner control is in lockout.
Once the cause has been rectified, the reset button must be pressed to restart the appliance.
•Cycling of appliance
In this case, the appliance continuously attempts to start, but there is an error that prevents the heating cycle from completing successfully.
Instruction manual BFM | 51 |