An outlet failed its temperature check
A sentinel or representative outlet missed its target (hot below 50 °C, or cold above 20 °C). Confirm it is real, find the cause, correct it, and record it. An untracked drift is exactly what enforcement looks for.
Do this now
- 1Re-run the reading correctly: let the outlet run long enough and measure at the right point before you conclude it failed.
- 2Diagnose the cause: low calorifier or return temperature, a TMV blending downstream, a dead leg, or cold water warming near a heat source.
- 3Correct it and re-check; if it cannot be fixed at once, manage the outlet (restrict, sign, or flush) in the meantime.
- 4Record the out-of-range reading, the cause, the action and the re-check, do not just tick the next month clear.
Read next
- Temperature control basics for Legionella prevention
- Hot water temperature guidelines to prevent Legionella
- Cold water temperature guidelines to prevent Legionella
- Poor temperature control: a recipe for Legionella
- Thermostatic mixing valves and Legionella risk
- Hot water storage: preventing Legionella in tanks and cylinders
Keep this under control
Turn these steps into a managed routine with records that hold up to scrutiny.
Cite this page
"An outlet failed its temperature check." Legionella.io. https://legionella.io/situations/failed-temperature-check/
Free to reuse under CC BY 4.0: quote, adapt or republish with attribution and a link back to the original.