Hi
Summit
High Temperature Lockout / Sensor Out‑of‑Range
Display shows Hi or HH and temperature cannot be adjusted; unit may not cool.
Advertisements
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.
Advertisements
Possible Causes
Cabinet sensor reading above allowed range, Sensor open circuit, Door left open for extended time, Control board fault
How to Fix / Troubleshooting
Safety: Unplug before accessing components.
- Confirm door closure and loading: Make sure the door is closed and not overloaded with warm bottles.
- Test cabinet sensor: Measure resistance; an open circuit indicates a failed sensor. Replace the cabinet temperature sensor if defective.
- Inspect wiring: Check the harness from sensor to control board for breaks.
- Control board replacement: If wiring and sensor are good but Hi persists, replace the main control board.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Cabinet Temperature Sensor (NTC)
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements