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ALUTHERM
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Boilers 48
ALUTERM B 350 - 600
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Installation, User and Service Manual
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instructions for user
Heating
Alutherm B 350 - 600
8
ERRORS
8.1
General
If there is no data visible on the display, the fuse (10,0 A slow blow) in the control panel near the main switch should be checked (as well as the
position of the on/off switch) and should if required be replaced (after the cause for break down has been determined and rectified).
WARNING! THIS FUSE IS PART OF THE 230 V CIRCUIT. DISCONNECT THE BOILER FROM THE MAINS ELECTRICITY SUPPLY BEFORE
REPLACING THE FUSE!
If there is still no data visible on the display, one has to check if there is 230 VAC present on the connections “L” and “N” of connector X00 in the
MAXSYS. Also see electrical wiring diagram.
If there is 230 VAC present (terminal connector C1: 19, 20) , then the 230 V fuses F1 and F2 inside the Maxsys should be renewed. Disconnect the
boiler from the main 230V supply and remove the connectors from the Maxsys.
Notice : for this it is not necessary to unscrew the Maxsys from the mounting plate
Release the six security clips with a long thin screw driver. Then remove the protective cover of the Maxsys. Replace the 230 V fuse(s) F1: T3.15 AL
250V and/or F2 T3.15 AL 250V inside the Maxsys.
A blown fuse in the Maxsys controller could be caused by a short-circuited pump. It is recommended to also check the CH-pump and also the DHW
pump in this case.
If the 230 V fuses are OK and the display is still blank, then the cable of the display to the Maxsys (X15) should be checked. If this is also ok, the Maxsys
should be renewed.
six security clips