DORCHESTER DR-RS 105, Инструкция по установке, наладке и обслуживанию

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Instruction manual DR-RS 49
6 Status of the water
heater
6.1 Introduction
Topics covered in this chapter:
•
6.2 Operating modes ;
• 6.3 Error conditions ;
6.2 Operating modes
When running, the water heater has three basic operating modes, namely:
•
DISCONNECTED
In this mode the water heater is off and all components are electrically dead.
The isolator (switch between the water heater and the power supply) is
turned off. On the control panel, the ON/OFF switch is at
position 0 .
• OFF
In this mode, the frost protection is activated. The isolator is set to position
I. On the control panel, the ON/OFF switch is at
position 0 .
• ON
In this mode the water heater continuously fulfils the demand for heat. On
the control panel:
-
the ON/OFF switch is at position I ;
- The water temperature can be set by turning the rotary knob on the
control thermostat, see paragraph
5.5 Control thermostat .
6.3 Error conditions
If the water heater has an error the heater will not operate. The frost protection
will also be out of operation.
If the water heater should go into an "error" state, you will be unable to
continuosly draw hot water. These error conditions are divided into three
groups:
•
Lock out error in the burner control
When this happens, the red error lamp in the reset button will light up on the
control panel. The burner control is locked out.
After removing the cause, the reset button must be pressed to re-start the
water heater.
• The water heater cycles continuously
When this happens, the water heater continues to attempt to start-up, but an
error is causing the heating cycle to fail.
See paragraph
7.4 The water heater’s heating cycle .
After removing the cause, the water heater will start-up again by itself.
• Blocking errors
You can recognise this condition by the fact that the water heater makes no
attempt to start operation, despite the water temperature being lower than
the control thermostat setting (see
5.5 Control thermostat ). These errors
disappear automatically once the cause of the error has been removed, after
which the water heater resumes by itself.
The cause of the error cannot be seen on the control panel. For a detailed
overview of error conditions, please refer to chapter
8 Troubleshooting .
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