Reznor
Reznor Limit Switch Thermal Overheat LC3 03 400US 03
Reznor thermal overheat limit switch LC3 (03 400US 03) for C-series room sealed unit heaters.
At a glance
- Also known as 2530468
£242.04
£201.70 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 Reznor 03 400US 03 is a thermal overheat limit switch, also referenced as LC3 (TOD10H14 212557). It is a safety device fitted to Reznor room sealed unit heaters. The switch monitors temperature and cuts the appliance's heat demand if an overheat condition occurs.
Signs this part needs replacing
- The heater fails to fire or locks out on a safety fault.
- The overheat limit trips repeatedly during normal operation.
- The switch shows visible damage, scorching or a loose connection.
- Intermittent heating where the limit switch is suspected.
Before you order
- Confirm the existing switch is marked 03 400US 03 or LC3.
- Check the appliance model against the fits list above.
- Verify that the thermal overheat limit switch is the faulty component and not another safety device or sensor.
- Have the appliance's technical documentation available to identify the correct location and wiring.
Compliance
| Alternative numbers | 03-400US-03, 2530468 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| REZNOR C4011 - ROOM SEALED UNIT HEATER | — | — | — | |
| REZNOR C4018 - ROOM SEALED UNIT HEATER | — | — | — | |
| REZNOR C4024 - ROOM SEALED UNIT HEATER | — | — | — | |
| REZNOR C4030 - ROOM SEALED UNIT HEATER | — | — | — | |
| REZNOR C4036 - ROOM SEALED UNIT HEATER | — | — | — | |
| REZNOR C4047 - ROOM SEALED UNIT HEATER | — | — | — | |
| REZNOR C4060 - ROOM SEALED UNIT HEATER | — | — | — | |
| REZNOR C4072 - ROOM SEALED UNIT HEATER | — | — | — |
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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