Potterton
Potterton Overheat Thermostat 5106291
Potterton overheat thermostat 5106291, a 96°C limit thermostat used on Powermax and Promax store cylinders and Store 24 HE boilers.
At a glance
- Also known as 1151288
£40.80
£34.00 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
A Potterton overheat thermostat, supplied under the part name THERMOSTAT - OVERHEAT MICROTHERM R20 A119 M5 96C and catalogue part number 5106291. It is a limit thermostat rated at 96°C, fitted to Potterton Powermax HE and Promax Store appliances, where it acts as a safety cut-out to shut the appliance down if the stored water or heat exchanger temperature exceeds the set limit. The component carries the Microtherm R20 A119 M5 reference.
Signs this part needs replacing
- The appliance repeatedly locks out on overheat and needs manual resetting
- Stored water or appliance temperature rises beyond the normal operating range
- The overheat trip occurs shortly after firing, even with the control thermostat set lower
- The limit stat fails to reset or has no continuity through its contacts
Before you order
- Confirm the serial number prefix and suffix of the cylinder, as the fitment list distinguishes serial numbers ending in AC and in BC
- Check that the existing thermostat is marked 96°C to match this part
- Verify the appliance model against the fitment list before ordering, particularly on Promax Store cylinder variants
Compliance
| GC number | E83-485 |
|---|---|
| Alternative numbers | 1151288 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| POTTERTON POTTERTON PROMAX 24 STORE 115L CYLINDER ErP FROM SERIAL No. PYR16 ENDING in BC | — | — | — | |
| POTTERTON POTTERTON PROMAX 24 STORE 115L CYLINDER ErP ISS 02 SERIAL No. ENDING AC | — | — | — | |
| POTTERTON POTTERTON PROMAX 24 STORE 150L CYLINDER ErP FROM SERIAL No. PYY16 ENDING in BC | — | — | — | |
| POTTERTON POTTERTON PROMAX 24 STORE 150L CYLINDER ErP ISS 02 SERIAL No. ENDING AC | — | — | — | |
| POTTERTON POTTERTON PROMAX 24 STORE 90L CYLINDER ErP FROM SERIAL No. PYL16 ENDING in BC | — | — | — | |
| POTTERTON POTTERTON PROMAX 24 STORE 90L CYLINDER ErP ISS 02 SERIAL No. ENDING AC | — | — | — | |
| POTTERTON POTTERTON PROMAX STORE 24 HE BOILER | — | — | — | |
| POTTERTON POWERMAX HE115 | 41-389-16 | 41-389-16 | — | — |
| POTTERTON POWERMAX HE150 | 41-389-17 | 41-389-17 | — | — |
| POTTERTON POWERMAX HE85 | 41-389-15 | 41-389-15 | — | — |
Showing 10 of 20 compatible appliances.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
POTTERTON appliance manual — POWERMAX HE115 (GC 41-389-16), POWERMAX HE150 (GC 41-389-17), POWERMAX HE85 (GC 41-389-15)
manualmanualPOTTERTON appliance manual — PROMAX 24 STORE 115L CYLINDER ErP - SERIAL No. ENDING AC (GC 41-592-48), PROMAX 24 STORE 115L CYLINDER ErP - SERIAL No. ENDING BC (GC 41-592-48), PROMAX 24 STORE 150L CYLINDER ErP - SERIAL No. ENDING AC (GC 41-592-49), PROMAX 24 STORE 150L CYLINDER ErP - SERIAL No. ENDING BC (GC 41-592-49), PROMAX 24 STORE 90L CYLINDER ErP - SERIAL No. ENDING AC (GC 41-592-47), PROMAX 24 STORE 90L CYLINDER ErP - SERIAL No. ENDING BC (GC 41-592-47)
manualmanualPOTTERTON appliance manual — PROMAX HE STORE 115 LITRE (GC 41-591-76), PROMAX HE STORE 150 LITRE (GC 41-591-77), PROMAX HE STORE 90 LITRE (GC 41-601-24)
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