Question about Arctic Above Ground Rugged Mesh Winter Cover Pool Size: 18' X 40' Oval Armor 8 Yr Warranty
Water is lukewarm and won't heat any more and no actual temperture on panel just tis HL alarm.
You may have a Spa Builders control system which was commonly used by Arctic Spas throughout their range.
Turn the hot tub off at the mains to reset it. If 'HL' returns again on the display you need to feel the heater tube. If the heater tube is not hot either, you have most likely got a faulty hi limit temperature probe (attaches to the heater), or a faulty PCB.
It might also be wothwhile checking the hi-limit probe connection on the PCB, these have been known to corrode and cause errors before.
The temperature probe is the cheapest item so try replacing this first.
Posted on May 15, 2010
Posted on Jul 21, 2009
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Thank you for posting your question here on Fixya.com.
HL stands for high limit...it means one of the high limit switches is open, preventing the heater from working. Either the limit has failed and replacing it will correct the issue or there is a situation with the heater or flow rates causing it to truly overheat...fixing the issue will return the heater to operation.
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