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When diagnosing a loss of hot water or high amperage draw
mid-range temperature optimization
maintaining optimal HVAC system efficiency and safety
This OEM replacement pressure switch monitors the pressure of air and flue gases to ensure the combustion process remains within safe operating parameters
The Sight-Set calibrated pressure adjustment allows for visible setpoint monitoring and adjustments through the range without 100% disassembly of the housing
Robertshaw 780-502 DSI Module 30067439-890 When diagnosing a loss ofThe Robertshaw 780 502 is a Universal Direct Spark Ignition (DSI) control module designed for single rod or dual rod sensing applications in natural and LP gas systems. This gas ignition control operates on 24V AC and provides a 4 second Trial For Ignition (TFI) with a single try lockout sequence. As a versatile non prepurge ignition module, it replaces hundreds of legacy Robertshaw and competitive models, including the DS845 and SP715 series. The
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