Thorn
Thorn Limit Thermostat 402A1013
Thorn 402A1013 limit thermostat and lead assembly for Thorn Apollo 50/65 and 50/80 gas boilers.
At a glance
- Appliance family: Thorn Apollo
£44.40
£37.00 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 Thorn 402A1013 is a limit thermostat supplied as a limit stat and lead assembly. It is fitted to Thorn Apollo gas boilers, where it monitors boiler temperature and interrupts the burner circuit if the set limit is exceeded. It forms part of the appliance's overheat protection, working alongside the boiler's main control thermostat.
Signs this part needs replacing
- The boiler repeatedly locks out or shuts down before reaching temperature
- The burner cuts out early and will not run through a full heating cycle
- The limit stat fails to reset, leaving the boiler permanently locked out
- Overheating symptoms that persist after the main thermostat has been checked
- Visible damage, scorching or a broken connection on the stat or its lead
Before you order
- Confirm your appliance model against the fitment list above
- Check the boiler serial number where a serial range is stated, as fitment differs across production runs
- Inspect the existing limit stat and lead assembly so the replacement matches the connections and mounting
- Verify the fault is with the limit stat and not with the main control thermostat or another safety device
Compliance
| GC number | 359-206 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| THORN APOLLO 50/65B | 41-789-67 | 41-789-67 | — | — |
| THORN APOLLO 50/65C | 41-789-68 | 41-789-68 | — | — |
| THORN APOLLO 50/80B | 41-789-63 | 41-789-63 | — | — |
| THORN APOLLO 50/80C | 41-789-64 | 41-789-64 | — | — |
| THORN APOLLO 65/80B AFTER SERIAL No 9006745649 | 41-789-69 | 41-789-69 | — | — |
| THORN APOLLO 65/80B UP TO SERIAL No 9006745648 | 41-789-69 | 41-789-69 | — | — |
| THORN APOLLO 65/80C | 41-789-70 | 41-789-70 | — | — |
| THORN THORN APOLLO 50/65B (FROM SERIAL NO 8702406241) | — | — | — | |
| THORN THORN APOLLO 50/65B (UP TO SERIAL NO 8702406240) | — | — | — | |
| THORN THORN APOLLO 50/65C (FROM SERIAL NO 8702406241) | — | — | — |
Showing 10 of 15 compatible appliances.
Documents & drawings
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