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Showing results for tags 'd21 red led on'.
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2010 Hot Springs Sovereign II, ll1M2085, with new IQ2020 Eagle Control Box Not heating and I don't think the circulation pump is operating. Flashing Power/Ready lights on the control panel. Open the Control Box pictured below, left to right: 1. D21 Red led light is on; 2. PWR ON led is green and flashing 3. LIMIT OK led is lit sold green Cleaned filters, checked for airlocks. Pulled the water lines off both the heater and the circ. pump and water is flowing. Did this to remove any airlock and check for an junk jammed in the pump. Seemed fine. Feeling the circulation pump