The red lights on our No Flame Plus units flash rapidly when the units are turned on, but the lights never turn green. Any suggestions or remedies?
First thought is the coil may have either fused(shorted) or fractured (no energy path)and may need replacing.
Feel handy with a multimeter? Open and see if the heating coil has continuity (10-20 ohms or very close) if it reads 0 ohms at the board, it's probably shorted.