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If your furnace is tripping this switch repeatedly
ensuring the gas valve remains closed if a flame is not detected during the ignition sequence
ensuring optimal refrigerant flow and minimal pressure differential
The kit includes the 4A bleed port fitting
Trane BAYICSI003A Board 30067439-890 If your furnace is trippingThe Trane BAYICSI003A Communication Interface Board is a critical OEM component designed to facilitate high speed data transmission between control modules and external monitoring systems. As the direct replacement for BRD3177, this ReliaTel communication module interface is engineered for seamless integration with 3 to 10 ton packaged rooftop units and 6 to 25 ton split systems. Field technicians rely on the BAYICSI003A to enable Trane Tracer system
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