Question about Raypak Free Hydraulic Lift Gate Delivery - No L...
We just opened our pool and went to turn the heater on two days later. CFH appeared on the reading and then the heater started making a loud knocking noise. What do we need to do?
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
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Posted on Jan 02, 2017
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