Halstead
Halstead Thermistor Assembly 10 Ohm 500590
At a glance
- Part type: Thermistor assembly
- Also known as N0247
£60.58
£50.48 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 Halstead 500590 is a 10 Ohm thermistor assembly used as a temperature-sensing component in Halstead domestic boilers. The printed circuit board passes a current through the thermistor and reads the resistance it returns; as temperature rises, resistance falls, and the board uses that reading to decide whether heat output should increase or decrease. It is designed for use in Finest, Ace, Wickes combi and Wickes boilers.
Signs this part needs replacing
- The boiler locks out or fails to fire on a call for heat
- Temperature control becomes erratic, with the boiler running hotter or cooler than the set point
- Domestic hot water temperature swings between hot and cold
- The boiler cycles repeatedly or trips on overheat
- A fault code relating to the temperature sensor or thermistor appears on the display
Before you order
- Check the GC number on the appliance data badge against E23-602 to confirm the correct sensor
- Confirm the model and serial number fall within the ranges shown in the compatibility list, as Halstead changed sensor fitment across production runs
- Isolate the electrical supply to the boiler before removing and refitting the sensor
- Note the alternative part number N0247 when cross-referencing against older stock or supplier listings
Mechanical
| Part type | Thermistor assembly |
|---|
Compliance
| Manufacturer part number (MPN) | 500590 |
|---|---|
| GC number | E23-602 |
| Commodity code | 8533 40 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | N0247 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| HALSTEAD ACE FROM AC100000131 | 47-333-10 | 47-333-10 | — | — |
| HALSTEAD ACE HIGH | 47-333-16 | 47-333-16 | — | — |
| HALSTEAD ACE TO AC100000131 | 47-333-15 | 47-333-15 | — | — |
| HALSTEAD FINEST FROM FGX500000131 | 47-333-12 | 47-333-12 | — | — |
| HALSTEAD FINEST GOLD FROM FGX500000131 | 47-333-13 | 47-333-13 | — | — |
| HALSTEAD FINEST GOLD UP TO FG500000131 | 47-333-07 | 47-333-07 | — | — |
| HALSTEAD FINEST PLATINUM | 47-260-02 | 47-260-02 | — | — |
| HALSTEAD FINEST UP TO FG500000131 | 47-333-06 | 47-333-06 | — | — |
| HALSTEAD WICKES 90 | 47-333-09 | 47-333-09 | — | — |
| HALSTEAD WICKES COMBI 102 | 47-333-18 | 47-333-18 | — | — |
Showing 10 of 13 compatible appliances.
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.
HALSTEAD appliance manual — ACE FROM AC100000131 (GC 47-333-10)
manualmanualHALSTEAD appliance manual — ACE HIGH (GC 47-333-16), ACE TO AC100000131 (GC 47-333-15)
manualmanualHALSTEAD appliance manual — FINEST FROM FGX500000131 (GC 47-333-12)
manualmanualHALSTEAD appliance manual — FINEST GOLD FROM FGX500000131 (GC 47-333-13)
manualmanualHALSTEAD appliance manual — FINEST GOLD UP TO FG500000131 (GC 47-333-07)
manualmanualHALSTEAD appliance manual — FINEST PLATINUM (GC 47-260-02)
manualmanualHALSTEAD appliance manual — FINEST UP TO FG500000131 (GC 47-333-06)
manualmanualMAXOL appliance manual — SUPACOMBI HE28 (GC 47-260-12)
manualNo technical questions yet for this part.
Not sure which part?
Tell the parts assistant what it's going into — the appliance make and model, or the GC number off the data badge — and it will check this part is on the fit list.