AOH
Canadian Spa Company
Ambient overheat in equipment compartment
Display shows AOH or AOHt; equipment bay feels very hot.
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Safety Warning
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.
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Possible Causes
Blocked cabinet ventilation, Spa installed in confined space, Pumps running continuously in hot weather, Control pack overheating
How to Fix / Troubleshooting
Safety: Turn off power if you smell burning or see melted components.
- Open cabinet: Remove the equipment-side panel to allow heat to escape and inspect for obstructions around the spa pack and pumps.
- Improve ventilation: Ensure there is adequate clearance around the spa per Canadian Spa Company installation guidelines. Do not block vents with insulation or objects.
- Check for stuck pumps: Verify that pumps are not running continuously due to a stuck relay or incorrect programming.
- Allow to cool: Let the equipment bay cool down, then restore power and monitor.
Persistent AOH may require relocating the spa, adding ventilation, or replacing an overheating control pack.
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Repair Difficulty
Medium
3/5
Required Part
Control Pack for Canadian Spa Company Spa
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