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91174302000 IG 446-0 W KüPPERSBUSCH
HB13M250B-03 BOSCH
HA010FBR0/07 SIEMENS
Reference: PAEU0264
termopar calentador vaillant 171173 rosca-3/8" 91174302000 IG 446-0 W KüPPERSBUSCHThe thermocouple is an essential safety component in Vaillant heaters that detects the presence of a flame and regulates the gas supply. It works by generating a small voltage when the flame is lit, allowing the gas valve to remain open. If the flame goes out, the thermocouple cuts off the gas to prevent dangerous leaks. What problem does this replacement part solve? The heater does not ignite or turns off immediately after ignition. Gas leaks due to
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