Jan 05, 2017 · Ignition trial/delay sequence is repeated until the appliance lights or call for heat is removed. For use with Natural or LP gas. For use in single rod or dual rod/remote sense applications.
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Mar 27, 2006 · 12. Usually with spark re-ignition systems, the presence of a pilot flame is detected by flame rectification, and the spark is turned off. 13. Which one of the following spark re-ignition steps is not in sequence _____? a. thermostat demands heat and energizes spark generator and pick-and-hold coils b. safety valve opens, allowing gas to pilot ... * the module is likely a Honeywell or a Robertshaw. ... allow the rest of the ignition sequence to happen.. ... any flame jump out from underneath the burner hood ... Igniter is de-energized at flame sense or at completion of 4 sec trial. If the flame is sensed, The Blower Vacuum Switch, Control Loop, Temp Sensor & Flame Sensor are constantly monitored during call for heat. 5. When set temp is reached, the control ends the call for heat. The gas valve is de-energized, and the flame is extinguished. 6.In most cases it is either a gas valve that is stuck in the open position, flame sensor wire is shorting against a low voltage source and sending false flame signal to board, or a faulty board. In all my years I have never seen an actual scenario where the burners were still running after the board finished it's call for heat. Learn about the ignition sequence of the single-stage, standard efficiency gas furnace. For information on program success, costs, and other important facts,...
9 Furnace Troubleshooting Tips from the Pros The next time your gas furnace stops pumping out the heat, before you call in the pros, try to troubleshoot the problem yourself using this handy ... Apr 24, 2006 · flame roll-out, draft safety, and combustion air flow switch c. flame roll-out, draft safety, and thermostat d. fan control, blower door interlock, and limit switch 7. If there is a failure of the inducer fan motor during operation, which switch will be most likely to sense this problem and shut down the furnace ? a. flame roll-out switch