Hayward CZXHLC3105 high limit switch for C-Spa XI Series heatersHayward C-Spa XI Series High Limit Switch, CZXHLC3105 In stock$12299
Hayward CZXHLC3105 high limit switch for C-Spa XI Series heaters
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Hayward C-Spa XI Series High Limit Switch, CZXHLC3105

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$12299
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Quick overview

  • Hayward CZXHLC3105 The high limit switch for the C-Spa XI Series.
  • Safety cutout Opens the heating circuit if water temperature climbs past the safe limit.
  • C-Spa XI Series Listed for the 1.5, 5.5 and 11 W C-Spa XI Series heaters as written on the source listing.
  • Direct replacement Swaps for the original hi-limit in the heater.
  • Fix the cause too A hi-limit that keeps tripping is usually reporting low flow, not failing on its own.
  • Do not bypass it The high limit is the last line of protection on an electric heater. Replace it, never jumper it.
Full description and specifications ↓

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Product details

The Hayward CZXHLC3105 is the high limit switch for C-Spa XI Series heaters. It is the over temperature cutout that protects the heater and the water it is heating.

How it works

The switch watches the temperature at the heater and opens the heating circuit if it climbs beyond the safe limit. That is what stops an electric heater from continuing to fire into water that is not moving.

Trace the cause before you replace

A high limit rarely trips for no reason. In most cases it is telling you the heater is starved of flow: a loaded filter, a partly closed valve, an air lock, a blocked impeller or a pump that is no longer moving what it should. Sort out the flow first. If the switch itself has failed open or will no longer reset, this is the replacement.

A note on the rating

The source listing gives the heater sizes as 1.5/5.5/11 W. Confirm the model on your heater against that listing before ordering.

Specifications
Brand Hayward
Manufacturer part number CZXHLC3105
UPC 610377011693
Type High limit switch
Fits Hayward C-Spa XI Series heaters
Ratings, as listed 1.5/5.5/11 W
Shipping weight 0.15 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

What does a high limit switch do?
It is the over temperature cutout. If the water leaving the heater gets too hot, the switch opens and shuts the heating circuit down.
Which heaters does it fit?
Hayward lists it for the C-Spa XI Series, with ratings written as 1.5/5.5/11 W on the source listing.
My hi-limit keeps tripping, will a new one fix it?
Often not on its own. Repeated tripping usually means the heater is not getting enough flow, from a dirty filter, a closed valve, a blocked impeller or a failing pump. Fix the flow first, then replace the switch if it is damaged.
Can I jumper the switch to keep the spa running?
No. It is the protection that stops the heater overheating the water and the vessel. Replace it rather than bypassing it.
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