Question about Raypak Rp2100 Pool & Spa Heater Lonox 407k Btu Natural Gas Polymer Header Digital Rp407aenc

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When we tried to light the heater the CFH shows, then I get a SPK which stays on for aroound 1 minute, then I get a LO. The heater never lites.

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  • adam hudson
    adam hudson Oct 27, 2010

    Is this heater newly installed? The LO immage indicates that you have a propane heater that is not igniting with the 90 second timeframe dictated by the CPU. MAke sure the gas valve is open, and that you are getting gas to the unit. Bleed the gas line if possible, if not, these units can cycle 20 times or more to bleed a long propane line. More info needed

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  • 310 Answers

The CFH is a Call For Heat.
The SPK tells you that it is creating a spark for ignition.
The LO tells me that you are on propane.
The fact that it doesnt light tells me that either the ignitor is not sparking, or that there is no gas, or an incorrect gas supply.
If this unit is installed with flexible gas line, replace this with rigid black pipe or a larger flex line.

Posted on Nov 04, 2010

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