Manual Remeha Gas 3002 ECO (page 31 of 36) (English)

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Fig. 21 N - V controller, boiler with 7 and 9 sections

Fig. 22 N - V controller, boiler with 11 to 19 sections

16. Switch the boiler to full load by selecting option

"Load maximum" with the ' ' button and confirming it

with the ' ' button.

Compare the CO

percentage with the value men

tioned in the table. Adjust, if necessary, this CO

percentage with the V-controller. Switch the boiler to

part load, measure and compare the CO

percentage

with the value mentioned in the table and adjust, if

necessary, the value with the N-controller.

17. Repeat this full load/part load switching until the CO

percentages at full load/part load come within the

tolerances mentioned in the table.

18. By pressing the ' ' button, the main menu of the

service level reappears. Now set the desired boiler

control, as described in para. 7.3.3.

By pressing the ' ' button three times, you return to

the main menu of the user level.

19. After commissioning, enter the preset values in the

table on the boiler.

20. Send the CE commissioning report to Broag.

11.3 Shut down the boiler

1. Turn off the power supply to the boiler.

2. Close the main gas cock.

3. Turn off the boiler control.

Please note! Frost protection may be required.

12. FAULT-FINDING

- Now select the option “History data” with the ' ' button

and confirm it with the ' ' button.

- Now select the lock out or shut down failure memory

using the ' ' button. Confirm with the ' ' button.

Depending on the option selected, the number of

locking failures stored in the memory (maximum 5 of

each) is now displayed.

Failure No. 1 is the failure which occurred last, failure

No. 2 the last but one, etc.

To know which failure occurred last, the failure counter

must be set to 1 using the ' ' and ' ' buttons. When the

' ' button is pressed for confirmation, the failure in

question is indicated. Using the ' ' button, various

menus can now be called up, all indicating the opera-

tional condition of the boiler at the moment of failure.

In the table below the various failure messages are dis-

played which may appear on the LCD-display, followed by

the instructions to eliminate the failure.

For possible measurement methods see chapter 11:

"Commissioning". When a failure message appears that

is not selfexplanitory, and is not displayed in the table,

then contact our service department.

Note:

When reporting a failure code, write down the exact mes-

sage and the parameters at which the failure occured.

12.1 General

For troubleshooting use the wiring diagram and the swit-

ching sequence diagram in paragraph 10.9. The instru-

ment panel is provided with an alphanumeric LCD-display.

In the case of failure, the display indicates the cause of

the failure and how long ago the boiler went into failure

mode. The failure and the operating condition at the time

of failure are stored in the memory of the control unit.

Five blocking and five locking failures can be stored in

this memory. If a failure in a boiler repeats itself several

times in rapid succession, this failure is stored only once.

Locking failures can be reset using the reset button on

the instrument panel (' ').

12.2 Faults

In the case of failure, the LCD-display indicates the cause

of the failure. It also indicates whether it is a blocking or

locking failure and how long ago it occurred. In the case

of a blocking failure, the boiler will automatically restart

when the cause of the failure has been eliminated. If the

same blocking failure has occurred 5 times in rapid suc-

cession, the boiler will lock out. Displaying the operational

condition at the time when the failure occurred speeds up

the search for the cause of failure.

Proceed as follows:

- Select the service level by travelling down the user

menus using the ' ' button. Enter code 00 12 using the

'' and ' ' buttons and confirm it with the ' ' button.

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