Question about Jandy LAARS LX400 - NATURAL GAS, DIGITAL READ-OUT, LOW NOX

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I get a message saying Hi Lim SW when trying to heat my spa. What does this mean?

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  • jaime8more May 11, 2010

    jandy lx 4oon-lcp

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Hi limit switch heating unit getting too hot what type of heater are you using

Posted on May 11, 2009

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1 Answer

LAARS LX250N-L error code AIR FLO SW and sometimes a HI LIM SW cannot locate the source of the problem?


hi limits are located under where the pipes go into the heater if corroded replace if wires bad replace to test you can jump them at the board only testing if left jumped heater could catch fire

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What does sw open mean on the digital display mean


sw open means open switch check pressure switch to see if voltage both sides if ok check hi limits

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How do i correct a "high limit switch circuit is open" code


check the fusable link for voltage on both sides if not replace also check pressure switch

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1 Answer

Message says hi lim sw


replace hi limits ther are 2 of them

Jul 07, 2011 | Jandy Lx Pool & Spa Heater - Electronic...

1 Answer

My balboa spa says sl and isn't heating up


SLP or SL Message

If the SLP or SL Message is Alternating with the Water Temperature on the Display, the Spa is Operating in the Sleep Heating Mode.

If the SLP or SL Message is ON Solid (Not Flashing) on the Display, the Spa is Operating in the Sleep Heating Mode, but there is No current water temperature because the Spa is between Filter Cycles.

You can find answers to common spa panel messages on the following page:

COMMON SPA PANEL MESSAGES

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1 Answer

My Jandy Pol heater is giving me an error message of Hi Lim SW which I believe means that it has something to do with the High Voltage somethihg or other. Can you please help me?


Thank you for posting your question here on Fixya.com.

Hi limit switched are embedded in the header and trip when the water temperature is too high. Most of the time the cause is either a faulty sensor or poor flow thru the heater causing the exchanger to overheat. If you have a bypass plumbed into the water lines at the heater close it and see if the problem goes away. If not, you'll need to check the limit switches to see if they are faulty or if a condition exists causing them to trip.

If this answer does not fix your problem, please comment with additional details prior to rating the answer. Positive feedback is appreciated once your problem is solved!

John

Jun 12, 2010 | Jandy Laars LX Pool Heater / 400,000 BTU /...

1 Answer

Fan for the heater will not come on showing service HI LIM SW on screen


That would mean the high limit switch. Check it and see if you can reset it. It may have gone bad. Check first and if needed find a replacement part. Good luck...Lee

Nov 25, 2009 | Jandy Lx Pool & Spa Heater - Electronic...

1 Answer

Laars LX400 Air Flo SW Error


is fan coming on if not bad fan motor also check pressure switch if 24 volts both sides that's ok make sure air flow switch hose is ok

Sep 09, 2009 | Teledyne Laars Laars Lx Pool Heater /...

1 Answer

I get a message saying Hi Lim SW when trying to heat my spa. What does this mean


Temp control failure (thermostat) high limit is safety to prevent over heat.

Jul 26, 2009 | Jandy LAARS LX400 - NATURAL GAS, DIGITAL...

1 Answer

Hi Limit Switch error


this may be for two reasons first the water is going to slow make sure filter is clean and either the water inlet plump incorect or the valve assembly is damage and need to be replace the high limit is letting you know the temp is getting to hot inside the heat exchanger

Jun 06, 2009 | Jandy Laars Lt 250,000 Btu Heater

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