Prolonged Standstill Of The System. Frost Protection; Error Messages And Table Of Faults - Baxi LUNA3COMFORT Installers And Users Instructions

8. PROLONGED STANDSTILL OF THE SYSTEM. FROST PROTECTION

We recommend you avoid draining the whole system as water replacements engender purposeless and harmful limestone
deposits inside the boiler and on the heating elements. In case the boiler is not operated during wintertime and is therefore
exposed to danger of frost we suggest you add some specific-purpose anti-freeze to the water contained in the system
(e.g.: propylene glycole coupled with corrosion and scaling inhibitors).
The electronic management of boilers includes a "frost protection" function in the central heating system which operates
the burner to reach a heating flow temperature of 30° C when the system heating flow temperature drops below 5°C.
The frost protection function is enabled if:
* electrical supply to the boiler is on;
* the gas service cock is open;
* the system pressure is as required;
* the boiler is not blocked.

9. ERROR MESSAGES AND TABLE OF FAULTS

There are two type of fault carried out by the temperature control: FAULT and
BLOCK.
FAULT
If a fault occurs, the display shows the symbols flashing together with the
<ERROR> writing.
The fault is identified by an error code followed by E letter and is not resettable.
Call an authorized Service Centre.
BLOCK
If a block occurs, the display shows the symbols flashing together with the <ERROR> writing alternated, with 2
seconds step, with the <>>>OK> flashing writing.
The block fault is identified by an error code (see the table below) followed by E letter.
Press the OK button (figure 1) to reset the gas boiler. The display shows the <RESET> writing and then the >>>OK
writing
INSTRUCTIONS PERTAINING TO THE USER 925.220.4 - EN
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