UPR 🟡 Repair Required
A.O. Smith Error Code UPR: Upper Element Fault
⚠️ Your A.O. Smith water heater has detected a fault with the upper heating element and has shut down to prevent damage. You will not have hot water until this is resolved.
How to Fix A.O. Smith Code UPR
- Step 1: Check the house circuit breaker for the water heater. Reset it if it has tripped.
- Step 2: If the breaker trips again immediately, leave it off and call a qualified technician.
- Step 3: If the breaker stays on, wait 30 minutes and check if the water heater is producing hot water. If not, call a qualified technician.
What Does A.O. Smith Error Code UPR Mean?
The 'UPR' error code on your A.O. Smith water heater indicates a problem with the upper heating element. This element is responsible for heating the top portion of the tank, providing you with hot water. The control board has detected either a short circuit, an open circuit, or some other electrical anomaly with this element. Because of this fault, the water heater has likely shut down the heating process to prevent further damage to the element or other components. This means you'll be without hot water until the issue is addressed. It's important to resolve this promptly to avoid potential issues like sediment buildup in the tank due to inconsistent heating.
Common Causes of A.O. Smith Code UPR
- Failed Upper Heating Element: The heating element itself has burned out or shorted out.
- Loose Wiring: The wiring connections to the upper heating element are loose or corroded.
- Faulty Thermostat: The upper thermostat is malfunctioning and not properly regulating the element.
- Sediment Buildup: Excessive sediment around the element is causing it to overheat and fail.
- Control Board Malfunction: The control board is incorrectly detecting a fault even though the element is fine.
Applicable A.O. Smith Models
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Find a Licensed Tech Near You →Replacement Parts for A.O. Smith HVAC System Code UPR
Upper Heating Element
Upper Thermostat
ECO (Energy Cutoff) Switch