Control mod LED is on constantly when burner is lit but goes out when burner goes out. I expected to find a small millivolt at the flame sensor, instead I found approx. 143 VAC and bouncing up and down the scale. Again the burner just cycles on and off. I suspect the controller to be faulty. Am I correct? How do I check the White Rogers 50D50-842?
After lighting burner goes out, purges lights, goes out. flame volts 143ac. white Rogers 50D50-842
Dec 15, 2014
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