indicating the York S1-363-87677-000 has reached its service limits

it is fully compatible with natural gas

75-0103 and 05750103 for seamless inventory matching

two-position electric room thermostat is a standard-tier solution for applications requiring on-off control of fan coils

Lochinvar & A.O. Smith 100073343 Flame Sensor 326058-756 indicating the York S1-363-87677-000 hasThe Lochinvar and A. O. Smith 100073343 flame sensor is a critical safety component designed for precise flame rectification in high efficiency water heaters and boilers. Engineered to withstand high ambient combustion chamber temperatures, this direct spark ignition flame probe ensures the integrated control board receives a consistent microamp signal, preventing nuisance soft lockouts or ignition failures. This genuine OEM replacement part (formerly