Display shows HLd or HLdY, spa may limit heater operation but still run pumps.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Marginal water flow through heater, Partially clogged filter, Weak circulation pump, Sensor detecting rapid temperature rise

Safety first: Turn off power before servicing filters or pumps.

Clean filter thoroughly: Remove the Dynasty Spas filter cartridge and deep clean with a filter cleaner solution if heavily soiled.
Check for obstructions: Inspect skimmer, suction fittings, and plumbing for debris or foreign objects.
Verify pump performance: With power restored, observe the circulation flow. If weak, the circulation pump may be failing and should be replaced.
Monitor operation: After cleaning and verifying flow, clear the code by power cycling and monitor for recurrence.

Medium 3/5

Filter Cartridge

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