Patent ID: 7195010

Claim:
A space heater comprising: a burner; a heating fan for taking in air through a first air intake and supplying the air to the burner, and for propelling, through a warm air grille, air heated by the burner; an air cleaner; an air cleaning fan for taking in air through a second air intake located in the vicinity of the first air intake and supplying the air to the air cleaner, and for propelling, through a clean air grille, air purified by the air cleaner; an operation controller for selectively performing either a heating operation, during which combustion occurs at the burner while the heating fan is being operated, and an air cleaning operation, during which the air cleaner and the air cleaning fan are operated, in a synchronous operating mode, or only the heating operation in an independent heating mode; a thermocouple for generating a thermoelectromotive force consonant with the combustion state of the burner; a combustion forced halt unit for halting combustion at the burner when, during a heating operation, the thermoelectromotive force generated by the thermocouple is lower, by a predetermined determination level, than a predetermined reference value; and a reference value setup unit for, when the mode is shifted from the independent heating mode to the synchronous operating mode and a thermoelectromotive force generated by the thermocouple is stabilized thereafter, determines that the thermoelectromotive force is the reference value.