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What causes a sequencer to stay "stuck" closed
allowing for sensor replacement without draining the system
offering compatibility with several 1820 and 1830 series Robertshaw models while ensuring the flame sensor signal remains within strict millivolt tolerances to prevent nuisance lockouts during high-demand heating cycles
Engineered to withstand high-cycle operations
Bard HVAC 8201-048BX Relay What causes a sequencer toAs a direct OEM replacement for the discontinued 8201 048, the Bard HVAC 8201 048BX Relay is the standard issue DPDT switching relay for servicing Bard wall mount units and heat pump systems. This double pole double throw (DPDT) component is engineered for multi circuit control, allowing service technicians to manage 277V loads up to 5 Amps. Whether you are troubleshooting fan motor control, staging electric heat, or managing reversing valve operation