Potterton Flue Gas Thermometer COM17006951

The FLUE THERMOMETER is a Potterton Commercial flue component supplied as part number COM17006951. It is fitted to Potterton Commercial NXR3 and NXR4 boiler ranges to monitor flue gas temperature. The part sits within the flue section of the appliance's spares list.

• Flue gas temperature readings that drift, fluctuate or fail to match readings taken with a combustion analyser
• A blank, frozen or unreadable instrument display during servicing or commissioning
• A probe or sensing element that is damaged, corroded or heavily sooted from flue condensate exposure
• Readings that sit outside a plausible range for the appliance, even after the flue has been checked
• Physical damage to the thermometer body, connection or lead where it enters the flue

• Confirm the boiler is a Potterton Commercial NXR3 or NXR4 and note the section count, as the range covers multiple section sizes
• Check the existing part number on the appliance against COM17006951
• Inspect the flue and combustion readings first, so the thermometer is not replaced for a fault caused elsewhere
• Confirm the thermometer is the component at fault rather than a wiring or connection issue