Tekmar Controls 402 Control 323080-701 Common Questions How do I

Common Questions How do I know if my dip tube has failed

ensure the shaft diameter matches during the swap-out process

you may see a cracked ceramic insulator or excessive carbon buildup that prevents proper current flow

simplifying service and maintenance

If pressure is adequate but the circuit stays open

Tekmar Controls 402 Control 323080-701 Common Questions How do IThe 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