Vaillant
Vaillant Sensor (TTB) 115236
Vaillant TTB sensor, part number 115236, for MAG XI water heaters.
At a glance
- Part type: sensor (TTB)
- Also known as 1387258
£28.45
£23.71 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 Vaillant Sensor (TTB) is a temperature sensing component used on Vaillant MAG XI instantaneous gas water heaters. It forms part of the appliance's temperature monitoring circuit, feeding temperature information back to the control so that hot water delivery and burner operation are regulated correctly. It is supplied under Vaillant part number 115236.
Signs this part needs replacing
- Hot water temperature that fluctuates or drifts from the set point
- The heater failing to modulate or maintain a steady outlet temperature
- Burner shutting down shortly after ignition or cycling on and off
- Fault or lockout conditions linked to temperature sensing on the appliance
- Erratic or implausible temperature readings at the control
Before you order
- Confirm the appliance model from the data badge, as fitment is limited to the MAG XI range listed above
- Check the part number on the existing sensor against 115236 before ordering
- Inspect the sensor wiring and connections, as a poor connection can mimic a failed sensor
- Isolate the gas and electrical supply before carrying out any work on the appliance
Compliance
| Alternative numbers | 1387258 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT MAG 14-0/0 XI (2004-2009) | — | — | — | |
| VAILLANT MAG mini 11-0/0 XI (2004) | — | — | — |
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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