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Automatic Thermal Protection: Features an auto-reset function that restores operation once temperatures drop below 115°F
you know that a nuisance lockout is often traced back to a fouled or failing flame rectification circuit
Common Technician Questions: Why does the L290F thermal switch keep tripping
it simply provides more "headroom" for the control circuit
Maxitrol M411B9 Plunger Automatic Thermal Protection: Features anThe Maxitrol M411B9 is a high precision modulator head plunger engineered specifically for the MR212 series of gas pressure regulators and modulating valves. Within the Selectra electronic gas flame modulation system, this plunger acts as the critical mechanical interface between the electrical solenoid signal and the gas flow regulation. When the amplifier applies DC voltage (typically ranging from 10 to 13 Volts DC on MR212 models), the resulting