Johnson & Starley
Johnson & Starley Thermostat Frost 20Deg S01320
Frost thermostat rated at 20°C for Johnson & Starley State boilers, used to protect the appliance and pipework in cold conditions.
At a glance
- Also known as 1690901
£96.40
£80.33 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 Johnson & Starley frost thermostat is a 20°C control component used on Johnson & Starley State boilers. It brings the boiler on when the surrounding temperature drops towards freezing, protecting the appliance and associated pipework from frost damage.
Signs this part needs replacing
- The boiler fails to fire when the surrounding temperature drops close to freezing
- Frost protection does not activate during cold spells, leaving pipework at risk
- The boiler runs when it should not, suggesting the thermostat is stuck or misreading
- The thermostat shows physical damage, corrosion or a loose or broken connection
- Frost protection behaves inconsistently compared with previous winters
Before you order
- Check your boiler model against the fit list above to confirm compatibility
- Confirm the existing thermostat is a 20°C frost type and matches part number S01320
- Inspect the wiring and terminal arrangement at the thermostat before removal
- Verify the fault lies with the thermostat rather than the boiler's main controls or sensor circuit
Compliance
| Alternative numbers | 1690901 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| JOHNSON & STARLEY JOHNSON AND STARLEY STATE SCE65-500 | — | — | — | |
| JOHNSON & STARLEY JOHNSON AND STARLEY STATE SCE80-115/140/180,95-199/260,70-360,65 | — | — | — | |
| JOHNSON & STARLEY JOHNSON AND STARLEY STATE SDV80-100G/80-160G/70-260G/70-390/70 | — | — | — |
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.
No technical questions yet for this part.
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