Johnson & Starley
Johnson & Starley Thermocouple Adaptor 1000-0704850
Thermocouple adaptor for Johnson & Starley Hispec J25RS and M31 warm air units, connecting the thermocouple to the gas valve.
At a glance
- Part type: thermocouple adaptor
- Also known as 1690054
- Work on gas-carrying components must be carried out by a Gas Safe registered engineer
£3.95
£3.29 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 thermocouple adaptor is a Johnson & Starley component used to connect a thermocouple to the gas valve assembly on Hispec warm air units. It provides the mechanical and electrical interface between the thermocouple and the valve, allowing the flame-sensing signal to hold the pilot and main burner in operation. It is listed for use across the Johnson & Starley Hispec J25RS and M31 warm air unit range.
Signs this part needs replacing
- Pilot flame extinguishes when the control knob is released
- Pilot lights but the main burner fails to stay alight
- Intermittent or repeated pilot drop-out during operation
- Visible corrosion, distortion or damaged threads on the adaptor
- Poor or intermittent contact between the thermocouple and the gas valve
Before you order
- Confirm your appliance model against the fitment list above
- Check the existing adaptor and thermocouple connection for thread type and condition
- Verify the manufacturer part number 1000-0704850 matches the part being removed
- Work on gas-carrying components must be carried out by a Gas Safe registered engineer
Compliance
| Alternative numbers | 1690054 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| JOHNSON & STARLEY HISPEC J25RS WARM AIR UNIT | 42-451-08 | 42-451-08 | — | — |
| JOHNSON & STARLEY HISPEC M31 WARM AIR UNIT | 42-451-10 | 42-451-10 | — | — |
| JOHNSON & STARLEY JOHNSON AND STARLEY HISPEC J25RS | — | — | — | |
| JOHNSON & STARLEY JOHNSON AND STARLEY HISPEC M31 | — | — | — |
Documents & drawings
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