Sime
Sime Smoke Thermostat Type LS1 75°C 6001404
Smoke thermostat type LS1 rated at 75°C for Sime gas boilers.
At a glance
- Also known as SMOKE-STAT-TYPE-LS1-75C, 2043220
Showing prices
£22.98
£19.15 ex. VAT · VAT at 20%
Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Sime 6001404 is a smoke thermostat, type LS1, rated at 75°C, used in Sime gas boilers. It forms part of the boiler's safety circuit.
Signs this part needs replacing
- Boiler locks out or fails to fire
- Repeated safety shutdowns
- Flue gas spillage detected
- Visible damage or corrosion on the thermostat
- Intermittent operation
Before you order
- Check your boiler model against the fit list above.
- Confirm the existing thermostat is type LS1 and rated at 75°C.
- Verify the part number 6001404 matches your current component.
- Consult a qualified heating engineer if unsure.
Compliance
| Alternative numbers | SMOKE-STAT-TYPE-LS1-75C, 2043220 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| SIME MURELLE 20 CE GPL - 8069413 | — | — | — | |
| SIME MURELLE 20 CE IONO GPL - 8069415 | — | — | — | |
| SIME MURELLE 20 CE IONO MET - 8069414 | — | — | — | |
| SIME MURELLE 20 CE MET - 8069412 | 47-719-18 | 47-719-18 | — | — |
| SIME MURELLE 20 R CE IONO MET - 8071524 | — | — | — | |
| SIME MURELLE 20 TX CE IONO MET - 8076909 | — | — | — | |
| SIME MURELLE 25 CE IONO MET - 8069438 | — | — | — | |
| SIME MURELLE CE | — | — | — | |
| SIME OPEN 20 CE IONO MET - 8092104 | — | — | — | |
| SIME OPEN 25 OF MET - 8092106 | — | — | — |
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
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.
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