Question about Raypak 406A Digital ASME Natural Gas IID Heater009271
The unit is saying "RVO", then "CFH" and that the pool filter needs to be cleaned. Is there a water flow switch problem?
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Posted on Jan 02, 2017
CFH is call for heat and the flame is about to come up. The banging you hear is the water inside the heater overheating to a boil. What you have is a water flow problem. If you have a valve bridging the water into the heater and the water going out be sure this valve is 80-90% closed so it forces water through the heater. If not you may have a problem inside the water manifold on the side of the heater. Their is a water by pass disc inside the header if stuck open will cause the same problem. Also check your baskets and filter to be sure they are clean.
Posted on May 07, 2010
SOURCE: I have a five year
CFH means "Call For Heat", and SPK is "Spark". It sounds like you are running out of gas.Propane tanks need to have 30% in the tank for a heater to run correctly,and after they are filled you must bleed the air out of the line.If you have Natural gas,the gas line may be too small to supply enough gas to keep it running. NOTE...gas pressure MUST be checked with the heater running.
Posted on Sep 28, 2010
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