Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Potterton Boiler Sensor QAL 36 Return Temperature 972819

Potterton

Potterton Boiler Sensor QAL 36 Return Temperature 972819

Potterton QAL 36 return temperature sensor for Paramount commercial boilers.

Manufacturer part no.
972819
Showing prices

£99.60

£83.00 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Potterton 972819 Boiler Sensor QAL 36 is a return temperature sensor used on Potterton Commercial Paramount appliances. It monitors the temperature of the returning heating water and feeds that reading back to the boiler control. That signal is used by the control to regulate firing and protect the appliance from operating outside its design conditions.

Signs this part needs replacing

  • Boiler locks out or shows a temperature-related fault code at start-up or during operation
  • Return temperature readings displayed or logged are erratic, implausible or fixed
  • Heating output is unstable, with the boiler cycling more frequently than normal
  • Appliance fails to modulate correctly or runs at a fixed rate regardless of load

Before you order

  • Confirm the appliance model and output against the fit list above
  • Check the existing sensor's designation and part number before removal
  • Inspect the sensor wiring and plug connection for damage or corrosion
  • Isolate the boiler electrically and shut off the water before any sensor work

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.