Ariston
Ariston Safety Thermostat (Firt) 921053
Safety thermostat (FIRT) for Ariston Protech AYVMA wall-hung cylinders, part number 921053.
At a glance
- Also known as 1575642
£30.83
£25.69 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 921053 is a safety thermostat (FIRT) manufactured by Ariston. It is used on Protech AYVMA wall-hung cylinders, including Edition 2 models, where it provides overheat protection by interrupting the heat source if the cylinder exceeds a safe operating temperature. This component is listed under thermostats in the gas boiler spares section.
Signs this part needs replacing
- The cylinder fails to heat water.
- The appliance locks out or requires resetting.
- An overheat fault code is displayed.
- No power reaches the heating element or burner.
- The thermostat shows visible damage or corrosion.
Before you order
- Confirm your appliance model matches one listed in the Fits section.
- Check the existing thermostat's part number or FIRT marking.
- Verify the electrical connections and reset type match the original.
- Isolate the power supply before fitting.
Compliance
| Barcode / EAN | 5411692275563 |
|---|---|
| Alternative numbers | 1575642 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ARISTON AYVMA 075 PROTECH EDITION 2 (MAY 1999) | — | — | — | |
| ARISTON AYVMA 100 PROTECH EDITION 2 (MAY 1999) | — | — | — | |
| ARISTON Protech AYVMA 075 Litre (Wall Hung) | — | — | — | |
| ARISTON Protech AYVMA 100 Litre (Wall Hung) | — | — | — | |
| ARISTON Protech AYVMA 150 Litre (Wall Hung) | — | — | — | |
| ARISTON Protech AYVMA 200 Litre (Wall Hung) | — | — | — |
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 documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
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