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Testing the outputs of regulator
It is possible to make a test to check the correct functionality of the regulator and devices con-
nected to the regulator. Correct function of the fan is tested by selecting the [outΠ] on display
and holding the „OK" button. Test of the circulatory pump is done by selecting the [outP]. Select
the [outu] to start the additional output and [outr] for multifunction additional output
Putting the regulator to original, production settings
There is a possibility to reset the regulator and change the settings to original, production set-
tings by selecting the [Prod] in the service menu and confirming by „OK" button. Then is the
regulator set to the values given in the Table 3.
Exit from service menu
Select the [End] on display and press the „OK" button to exit from service menu.
6.3.8 ERROR MESSAGES
Connection of all sensors of the regulator is constantly checked.
If the regulator detects that some of the sensors is not connected, the error messages are dis-
played. Messages about the boiler overheating or fuel shortage are also displayed.
[FUEL] – is displayed, when there is not enough fuel in the boiler. The sufficient amount of fuel
c
is defined by the parameter
90, where the figure 90 is related to the set value 90 °C. Then, if the
flue gas temperature decreases below this set value within the time Fb30 (time of boiler stop by
fuel shortage), the regulator displays [FUEL] message. To put the boiler in the operation mode
again, it is necessary to remove the message by the STOP button and then to press START to
start the boiler.
[HOT] – is displayed, when the flue gas temperature exceeds the maximum permitted value set
by the parameter c300 (means 300 °C). The fan is stopped in this case. After the temperature de-
creases to the adjusted flue gas temperature, the fan is started again.
[E 1] – is displayed, when it comes to the boiler temperature sensor failure or when is sensor not
connected. In such case is the regulator taking actions to ensure the safety of the boiler – the fan
is put out of operation (if it is currently in operation) and the circuit pump is started for eventual
safe boiler cooling. When is the cause of error removed, the error message can be canceled by
the STOP button.
[E 2] – is displayed, when the boiler temperature exceeds the boiler overheating temperature
A99. In this case regulator turns off the exhaust fan and starts the circulatory pump. The error
message can be removed by the STOP button after the boiler temperature decreases to the safe
value.
[E 8] – is displayed, when it comes to the additional sensor failure (in the D.H.W. tank or accumu-
lation tank). If this sensor works as the D.H.W. tank sensor, charging is blocked. If the sensor
works for the accumulation tank, the pump permanently works. It is not necessary to remove
this error by the STOP button. It is removed automatically after the sensor failure is removed.
[E128] – is displayed, when the flue gas temperature sensor fails. In this case is regulator
switched to the mode of controling the boiler according to the boiler temperature. Error mes-
sage is removed automatically, when is the failure of flue gas temperature sensor removed.
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