Alpha
Alpha NTC Fast Immersion Probe 1.022949
NTC fast immersion probe for Alpha InTEC 2 gas boilers, used as the cold inlet sensor.
At a glance
- Also known as COLD-INLET-SENSOR, 1258893
£26.06
£21.72 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 Alpha NTC fast immersion probe (part number 1.022949) is a cold inlet sensor for Alpha InTEC 2 gas boilers. It uses an NTC thermistor to measure water temperature at the cold inlet and sends the signal to the boiler's control board. This sensor helps the boiler regulate domestic hot water temperature and maintain safe operation.
Signs this part needs replacing
- Erratic or inaccurate domestic hot water temperature
- Boiler fails to respond to hot water demand
- Intermittent lockout or ignition failure
- Resistance reading outside the expected range when tested
- Visible damage, corrosion or loose wiring at the sensor
Before you order
- Confirm your boiler model and GC number match the list above
- Check the existing sensor part number is 1.022949
- Inspect the wiring connector and mounting point for damage
- Isolate the boiler and depressurise the system before replacement
Compliance
| Alternative numbers | COLD-INLET-SENSOR, 1258893 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA ALPHA InTEC 2 26CE | — | — | — | |
| ALPHA ALPHA InTEC 2 30CE | — | — | — | |
| ALPHA ALPHA InTEC 2 35CE | — | — | — | |
| ALPHA InTEC 2 26CE | 47-532-66 | 47-532-66 | — | — |
| ALPHA InTEC 2 30CE | 47-532-67 | 47-532-67 | — | — |
| ALPHA InTEC 2 35CE | 47-532-68 | 47-532-68 | — | — |
Documents & drawings
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