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LMV5000.EN202001V6
Max. temp. condenser (when applicable)
This failure occurs when the water temperature in the flue gas condenser is too high.
Check:
•
Condenser water flow: Check whether the circulation pump is operating
properly and whether the manual shut-off valves are closed.
•
That the condenser and the connected system do not have air in them.
•
WARNING!! Watch out for hot parts and spraying hot water in case of leaks!
Max. pressure condenser (when applicable)
The condenser is checked for contamination using a pressure switch which
measures the condenser backpressure. If the backpressure measured at the switch
is too high, the burner is locked out. The pressure switch is mounted on the flue gas
duct between the boiler and the condenser.
Possible causes:
•
Condenser is dirty.
•
Flue gas valve(s) is/are not in the correct position.
•
Condensate drain is blocked.
Check:
•
Open the inspection cover to check for contamination.
•
The position of the flue gas valves.
•
The condensate drain and syphon under the condenser.
Autoflame system failure (MM error)
If the Autoflame module display displays the Lock Out screen, the MM has been
triggered by an internal error in the system.
Before pressing the reset button write down the Error code. If after resetting the
Autoflame module the error re-occurs, contact your local service support service.
Frequency control code F
When an internal or external frequency control error is triggered the frequency control
is switched off and the “F” symbol error code is displayed followed by a number
including a brief description.
Warning! If you contact our service department because of a failure, please write
down the error code and description. Once the cause of the failure is removed the
error can be reset by pressing the “reset/enter” button.
Under normal conditions the frequency control unit does not require maintenance
work. The frequency control unit includes a cooling fan to blow the surrounding air
over the cooling body. Take care that the air openings are not blocked. If the cooling
body becomes too hot the control will trigger an “F14” error.
Summary of Contents for RKB
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