Tekmar Controls 402 Control 320074-702 A reading of infinity indicates

A reading of infinity indicates a cracked element or open circuit

you must verify your specific model and serial range to ensure proper logic mapping

Structural Integrity: Designed to resist deformation under high thermal loads

ensuring correct shaft diameter and mounting alignment

Using a shorter or longer variant can result in inaccurate temperature readings and nuisance tripping

Tekmar Controls 402 Control 320074-702 A reading of infinity indicatesThe Tekmar 402 House Control provides precise management for hydronic heating systems, operating on a 24Vac power supply. This versatile tN2 communication hub is engineered to coordinate a single boiler, domestic hot water (DHW) generation, and a setpoint load. It is capable of managing mixing valve control or up to four zone valves directly. The unit supports outdoor reset technology to optimize fuel efficiency by adjusting boiler water temperatures