szisztematikus dominálnak szünet vaillant bojler greška f75 Kísérlet Földesúr Lebeg
Šire greške na plinskim kotlom od strane vailat, oznaka ikona i rješavanje problema. Sistemi zagrijavanja zemalja i seoskih kuća. Kotlovi, zvučnici za plin, grijači vode - popravak, servis, rad. Preporuke za ugradnju
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Boris : Vaillant
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