Potterton
Potterton Flue Safety Thermostat M4 85ORM 5132152
Flue safety thermostat for Potterton Commercial Sirius FS and Wh boilers, rated at 85°C.
£8.64
£7.20 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Potterton flue safety thermostat M4 85ORM is a safety cut-out device used on Potterton Commercial Sirius gas boilers. It monitors flue temperature and interrupts the burner sequence when that temperature rises beyond the rated limit. It is listed under gas boiler spares as a thermostat for the Potterton Commercial range.
Signs this part needs replacing
- The boiler locks out or shuts down once the flue reaches operating temperature
- Repeated safety trips that clear on reset but return when the boiler fires again
- The boiler fails to complete its ignition sequence after a flue overheat event
- Continuity testing across the thermostat shows it does not switch at the rated temperature
Before you order
- Confirm the appliance model against the Sirius FS and Wh listings above
- Check the rating marked on the existing thermostat matches 85°C
- Compare the M4 designation and part number 5132152 with the part being removed
- Isolate the appliance and allow the flue to cool before removing the old thermostat
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| POTTERTON COMMERCIAL POTTERTON COMMERCIAL SPARES | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS FS 130-160 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS FS 50-70 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS FS 90-105 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS WH110 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS WH90 | — | — | — |
Documents & drawings
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