Dwyer Instruments DA-7031-153-1 Pressure Switch R-407C The Maxitrol TD121A is a

The Maxitrol TD121A is a precision remote temperature selector engineered for high-accuracy atmospheric gas-fired heating systems

If the communication failure (Code C1) is isolated to the inverter PCB assembly

Control Precision: Adjustable temperature differentials and separate O and B terminals allow for fine-tuned system response

Applying DC voltage will result in coil failure and may create a safety hazard

Dwyer Instruments DA-7031-153-1 Pressure Switch R-407C The Maxitrol TD121A is aThe Dwyer DA 7031 153 1 is a high performance Bourdon tube pressure switch designed for precision control in commercial and industrial HVACR applications. This adjustable deadband pressure switch features an operating range of 0. 125 to 15 psig, providing reliable setpoint management for low pressure systems. Engineered with a brass Bourdon tube and a durable SPDT switch rated for 10 amps, the DA 7031 153 1 ensures long term endurance and