
Alpha
Alpha overheat thermostat manual reset 6.9950570
Genuine Alpha manual-reset overheat thermostat, part number 6.9950570, a safety cut-out for the primary heat exchanger.
At a glance
- Also known as LIMIT-TSTAT-ONLY-105DEG-240XE, 1257633
- poor circulation or limescale) that should be diagnosed first; this is gas appliance work and should be carried out by a Gas Safe registered engineer
£70.84
£59.03 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
This is the manual-reset overheat thermostat fitted to affected Alpha boilers, a safety device that shuts the boiler down if the primary heat exchanger runs dangerously hot, and must be reset by hand once the fault is cleared. It is a genuine Alpha part, number 6.9950570.
Signs this part needs replacing
- Boiler locks out repeatedly on an overheat fault code
- The reset button trips again shortly after being pressed
- No continuity across the thermostat when tested by an engineer
- Visible heat damage around the thermostat housing
Before you order
- Match this part number against the thermostat fitted to your boiler
- Isolate electrical power to the boiler before working on this part
- Repeated overheat trips can indicate a separate fault (e.g. poor circulation or limescale) that should be diagnosed first; this is gas appliance work and should be carried out by a Gas Safe registered engineer
Compliance
| Alternative numbers | LIMIT-TSTAT-ONLY-105DEG-240XE, 69950570, 1257633 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA 240XE | 47-532-11 | 47-532-11 | — | — |
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.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.
