Fan assembly of a gas burner appliance, comprising a fan module, said fan module having a fan module housing comprising a fan plate housing part, a fan impeller housing part and a collar housing part, wherein the fan impeller housing part is mounted to the fan plate housing part at a first side of the fan plate housing part, and wherein the collar housing part is mounted to the fan plate housing part at an opposite second side of the fan plate housing part, a fan impeller, said fan impeller being positioned at the first side of the fan plate housing part within a first interior space of the fan module housing defined by the fan plate housing part and the fan impeller housing part, a cooling impeller, said cooling impeller being positioned at the second side of the fan plate housing part within a second interior space of the fan module housing defined by the fan plate housing part and the collar housing part, first electronic components for controlling the operation of the fan assembly, said first electronic components being positioned within the second interior space, wherein said first electronic components are cooled by said cooling impeller, an electronic module, said electronic module having an electronic module housing, second electronic components for controlling the operation of the fan assembly, said second electronic components being positioned with said electronic module housing, wherein said second electronic components are electrically or electronically connected to said first electronic components, wherein the electronic module housing is releasably mounted to collar housing part in such a way that for mounting the electronic module to the fan module and for unmounting the electronic module from the fan module the electronic module is guided relocatable at the collar housing part in a linear direction running perpendicular to a rotation axis of the cooling impeller and/or running perpendicular to a rotation axis of the fan impeller. a fan module, said fan module having a fan module housing comprising a fan plate housing part, a fan impeller housing part and a collar housing part, wherein the fan impeller housing part is mounted to the fan plate housing part at a first side of the fan plate housing part, and wherein the collar housing part is mounted to the fan plate housing part at an opposite second side of the fan plate housing part, a fan impeller, said fan impeller being positioned at the first side of the fan plate housing part within a first interior space of the fan module housing defined by the fan plate housing part and the fan impeller housing part, a cooling impeller, said cooling impeller being positioned at the second side of the fan plate housing part within a second interior space of the fan module housing defined by the fan plate housing part and the collar housing part, first electronic components for controlling the operation of the fan assembly, said first electronic components being positioned within the second interior space, wherein said first electronic components are cooled by said cooling impeller, a fan module housing comprising a fan plate housing part, a fan impeller housing part and a collar housing part, wherein the fan impeller housing part is mounted to the fan plate housing part at a first side of the fan plate housing part, and wherein the collar housing part is mounted to the fan plate housing part at an opposite second side of the fan plate housing part, a fan impeller, said fan impeller being positioned at the first side of the fan plate housing part within a first interior space of the fan module housing defined by the fan plate housing part and the fan impeller housing part, a cooling impeller, said cooling impeller being positioned at the second side of the fan plate housing part within a second interior space of the fan module housing defined by the fan plate housing part and the collar housing part, first electronic components for controlling the operation of the fan assembly, said first electronic components being positioned within the second interior space, wherein said first electronic components are cooled by said cooling impeller, an electronic module, said electronic module having an electronic module housing, second electronic components for controlling the operation of the fan assembly, said second electronic components being positioned with said electronic module housing, an electronic module housing, second electronic components for controlling the operation of the fan assembly, said second electronic components being positioned with said electronic module housing, wherein said second electronic components are electrically or electronically connected to said first electronic components, wherein the electronic module housing is releasably mounted to collar housing part in such a way that for mounting the electronic module to the fan module and for unmounting the electronic module from the fan module the electronic module is guided relocatable at the collar housing part in a linear direction running perpendicular to a rotation axis of the cooling impeller and/or running perpendicular to a rotation axis of the fan impeller.