Alpha
Alpha Overheat Thermostat 1.016870
Alpha 1.016870 overheat thermostat rated at 105°C for C Range, CD Range and Protec gas boilers.
At a glance
- Also known as 1257529
£18.05
£15.04 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 Alpha 1.016870 is an overheat thermostat rated at 105°C, used across Alpha C Range, CD Range and Protec gas boilers. It works as a safety cut-out, interrupting the burner when the boiler temperature rises above its safe operating limit. The part is manufactured by Alpha for these appliance families.
Signs this part needs replacing
- Boiler locks out or shuts down repeatedly, particularly once it has reached temperature
- Overheat trip operates and requires a manual reset before the boiler will fire
- Boiler fails to fire, or runs only briefly before cutting out
- Fault code or lockout indicating an overheat condition
- Boiler cuts out during hot water or heating demand without an obvious external cause
Before you order
- Confirm your boiler model and GC number against the fitment list above
- Check the temperature rating and part number on the existing thermostat
- Isolate the electrical supply and follow the manufacturer's instructions before fitting
- Rule out underlying causes of overheating, such as poor circulation or a faulty pump, before replacing the thermostat
Compliance
| Alternative numbers | 1257529 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA ALPHA C23 | — | — | — | |
| ALPHA ALPHA C27 | — | — | — | |
| ALPHA ALPHA CB50 | — | — | — | |
| ALPHA C23 | 47-532-22 | 47-532-22 | — | — |
| ALPHA C23 (LPG) | — | — | — | |
| ALPHA C27 | 47-532-23 | 47-532-23 | — | — |
| ALPHA C27 (LPG) | — | — | — | |
| ALPHA CB50 | 47-532-18 | 47-532-18 | — | — |
| ALPHA CB50 (LPG) | — | — | — | |
| ALPHA CD115S | — | — | — |
Showing 10 of 57 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.
ALPHA COMMERCIAL appliance manual — PRO TEC 115, PRO TEC 115 (LPG), PRO TEC 50, PRO TEC 50 (LPG), PRO TEC 70, PRO TEC 70 (LPG), PRO TEC 90, PRO TEC 90 (LPG)
manualmanualALPHA COMMERCIAL appliance manual — PRO TEC PLUS 100, PRO TEC PLUS 100 (LPG), PRO TEC PLUS 115 (GC 41-532-36), PRO TEC PLUS 115 (LPG), PRO TEC PLUS 50 (GC 41-532-30), PRO TEC PLUS 50 (LPG), PRO TEC PLUS 60, PRO TEC PLUS 60 (LPG), PRO TEC PLUS 70 (GC 41-532-32), PRO TEC PLUS 70 (LPG), PRO TEC PLUS 75, PRO TEC PLUS 75 (LPG), PRO TEC PLUS 90 (GC 41-532-34), PRO TEC PLUS 90 (LPG)
manualmanualALPHA COMMERCIAL appliance manual — PROTEC 115NX, PROTEC 115NX LPG, PROTEC 150NX, PROTEC 150NX LPG, PROTEC 90NX, PROTEC 90NX LPG
manualmanualALPHA COMMERCIAL appliance manual — PROTEC 48NX, PROTEC 48NX LPG, PROTEC 68NX, PROTEC 68NX LPG
manualmanualALPHA appliance manual — C23 (GC 47-532-22), C23 (LPG), C27 (GC 47-532-23), C27 (LPG)
manualmanualALPHA appliance manual — CB50 (GC 47-532-18), CB50 (LPG)
manualmanualALPHA appliance manual — CD115S, CD115S (LPG), CD90S, CD90S (LPG)
manualmanualALPHA appliance manual — CD25C (GC 47-532-31), CD25C (LPG) (GC 47-532-32), CD28C (GC 47-532-33), CD28C (LPG) (GC 47-532-34), CD28C EXTRA, CD28C EXTRA (LPG), CD35C (GC 47-532-35), CD35C (LPG) (GC 47-532-36)
manualmanualALPHA appliance manual — CD50S, CD50S (LPG), CD70S, CD70S (LPG)
manualNo technical questions yet for this part.
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