Question about Pool & Spa
Gas is on, control panel seems to be working, when turned on nothing happens, no blower, after 2 or so minutes high limit switch error comes on. I have checked both switches and and both are closed.
Check filters or pressure switch sounds like safety switch isnt working
Posted on May 08, 2014
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Posted on Jan 02, 2017
SOURCE: High Limit Swtiich message
The high limit switch is one part of a safety loop circuit that must work before a heater can fire. It's purpose is to ensure tha tthe heater will shut off in the event of a thermostat failure or if the internal core gets too hot due to a lack of water flow. If the switch is failing, it needs replaced. There are 2 so you can replace both or make an attempt to determine which one is bad. It is best to replace the pair.
Posted on Dec 21, 2008
This indicator normally means that your water temperature in the pool heater exceeds the internal limit. The corrosion should not be causing this problem. Since the high temperatures can be dangerous, you will probably have to contact a pool professional to service the machine.
Posted on Aug 12, 2010
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