Ferroli
Ferroli Thermostat Pump Overrun 39810860
Pump overrun thermostat for Ferroli SYS 10-23 gas boilers, part number 39810860.
At a glance
- Also known as 1210732
£11.76
£9.80 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 Ferroli 39810860 is a pump overrun thermostat used in Ferroli gas boilers. It monitors residual heat in the heat exchanger and keeps the circulating pump running after the burner shuts down, preventing overheating. It is listed under thermostats within Ferroli boiler spares.
Signs this part needs replacing
- Pump stops immediately when the burner shuts down instead of running on.
- Boiler overheats or kettles shortly after the burner goes out.
- Repeated overheat lockouts or high limit trips.
- Short cycling on the heating or hot water cycle.
- Pump fails to run on during the cool-down period.
Before you order
- Confirm your boiler is a Ferroli SYS 10-23 or SYS 10-23 - 30K00470.
- Check the GC number 41-267-20 against your appliance data badge.
- Verify the existing thermostat is marked 39810860.
- Ensure the fault is with the thermostat and not the pump, wiring or PCB.
Compliance
| GC number | H37-940 |
|---|---|
| Alternative numbers | FER39810860, 1210732 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| FERROLI FERROLI SYS 10-23 | — | — | — | |
| FERROLI SYS 10-23 - 30K00470 (01/01/2004) | 41-267-20 | 41-267-20 | — | — |
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.
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