Johnson & Starley
Johnson & Starley Thermocouple BOS00036
SIT thermocouple (non-ASD) for Johnson & Starley Balmforth, Mclary, Hispec and J-series warm air units.
At a glance
- Also known as 1690512
Showing prices
£34.75
£28.96 ex. VAT · VAT at 20%
Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Johnson & Starley BOS00036 is a SIT thermocouple supplied as a non-ASD type. It is fitted to Johnson & Starley gas-fired warm air units and their associated water heaters, where it holds the pilot flame and proves flame presence to the gas control. Once the pilot is established, the thermocouple generates the millivolt signal that keeps the pilot and main burner circuit open.
Signs this part needs replacing
- The pilot will not stay lit once the gas control knob is released.
- The pilot flame lights but extinguishes shortly afterwards.
- The appliance shuts down or locks out intermittently during operation.
- The pilot has to be relit repeatedly between cycles.
- The pilot flame appears weak or unstable at the thermocouple tip.
Before you order
- Confirm your appliance model against the fit list above before ordering.
- Check whether your pilot assembly is the non-ASD type, as this thermocouple is the non-ASD specification.
- Compare the thermocouple connection and lead against the part currently fitted to the pilot assembly.
- If the pilot assembly is being replaced as a whole, confirm whether a complete assembly is required instead.
Compliance
| Barcode / EAN | 5055189908185 |
|---|---|
| Alternative numbers | 1690512 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| JOHNSON & STARLEY BALMFORTH / MCLARY BD50- TD35-50 - TD50-60 WARM AIR UNIT | — | — | — | |
| JOHNSON & STARLEY BALMFORTH / MCLARY D40-60 - U40-60 WARM AIR UNIT | 43-306-01 | 43-306-01 | — | — |
| JOHNSON & STARLEY BALMFORTH / MCLARY D60-80 WARM AIR UNIT | 42-306-40 | 42-306-40 | — | — |
| 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 J15-22 WARM AIR UNIT - JANUS WATER HEATER | 43-416-23 | 43-416-23 | — | — |
| JOHNSON & STARLEY J15-22 MAF WARM AIR UNIT - JANUS WATER HEATER | 43-416-25 | 43-416-25 | — | — |
| JOHNSON & STARLEY J15-22 MAF WARM AIR UNIT | 42-417-03 | 42-417-03 | — | — |
| JOHNSON & STARLEY J15-22 MK3 WARM AIR UNIT - JANUS WATER HEATER | 43-416-27 | 43-416-27 | — | — |
| JOHNSON & STARLEY J15-22 MK3 MAF VI WARM AIR UNIT | 42-417-22 | 42-417-22 | — | — |
Showing 10 of 165 compatible appliances.
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
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.
manual
JOHNSON & STARLEY appliance manual — BALMFORTH / MCLARY BD50- TD35-50 - TD50-60 WARM AIR UNIT
manualmanualJOHNSON & STARLEY appliance manual — BALMFORTH / MCLARY D40-60 - U40-60 WARM AIR UNIT (GC 43-306-01), BALMFORTH / MCLARY D60-80 WARM AIR UNIT (GC 42-306-40)
manualmanualJOHNSON & STARLEY appliance manual — HISPEC J25RS WARM AIR UNIT (GC 42-451-08)
manualmanualJOHNSON & STARLEY appliance manual — HISPEC M31 WARM AIR UNIT (GC 42-451-10)
manualmanualJOHNSON & STARLEY appliance manual — J15-22 WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-23), J15-22 MAF WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-25), J15-22 MAF WARM AIR UNIT (GC 42-417-03), J15-22 MK3 WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-27), J15-22 MK3 MAF VI WARM AIR UNIT (GC 42-417-22), J15-22 MK3 MAF VI WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-41), J15-22 MK3 MAF WARM AIR UNIT (GC 42-417-09), J15-22 MK3 WARM AIR UNIT (GC 42-417-07), J15-22 Mk3 WARM AIR UNIT - ELJAN WATER HEATER (GC 43-416-69), J15-22 Mk3 WARM AIR UNIT - HIJAN WATER HEATER (GC 43-416-84), J15-22 Mk3 MAF VI WARM AIR UNIT - ELJAN WATER HEATER (GC 43-416-71), J15-22 Mk3 MAF VI WARM AIR UNIT - HIJAN WATER HEATER (GC 43-416-86), J15-22 WARM AIR UNIT (GC 42-417-01), J25-32 MK3 MAF VI WARM AIR UNIT (GC 42-417-24), J25-32 MK3 MAF VI WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-43), J25-32 MK3 MAF VI WARM AIR UNIT - SUPERJAN WATER HEATER (GC 42-417-82), J25-32 MK3 MAF WARM AIR UNIT (GC 42-417-13), J25-32 MK3 MAF WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-33), J25-32 MK3 MAF WARM AIR UNIT - SUPERJAN WATER HEATER (GC 42-417-81), J25-32 MK3 WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-31), J25-32 MK3 WARM AIR UNIT - SUPERJAN WATER HEATER (GC 42-417-80), J25-32 Mk3 MAF VI WARM AIR UNIT - ELJAN WATER HEATER (GC 43-416-77), J25-32 Mk3 MAF VI WARM AIR UNIT - HIJAN WATER HEATER (GC 43-416-92), J25-32 Mk3 MAF WARM AIR UNIT - ELJAN WATER HEATER (GC 43-416-76), J25-32 Mk3 MAF WARM AIR UNIT - HIJAN WATER HEATER (GC 43-416-91), J25-32 Mk3 WARM AIR UNIT - ELJAN WATER HEATER (GC 43-416-75), J25-32 Mk3 WARM AIR UNIT - HIJAN WATER HEATER (GC 43-416-90), JA33-43 MAF VI WARM AIR UNIT (GC 42-417-18), JA33-43 MAF WARM AIR UNIT (GC 42-417-17), JA33-43 WARM AIR UNIT (GC 42-417-06), JA33-43 WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-35), JA33-43-MAF VI WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-37), JA33-43-MAF WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-36)
manualmanualJOHNSON & STARLEY appliance manual — J15-22R WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-24), J15-22R MAF WARM AIR UNIT (GC 42-417-04), J15-22R MAF WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-26), J15-22R MK3 MAF VI WARM AIR UNIT (GC 42-417-23), J15-22R MK3 MAF WARM AIR UNIT (GC 42-417-10), J15-22R MK3 MAF WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-30), J15-22R MK3 WARM AIR UNIT (GC 42-417-08), J15-22R MK3 WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-28), J15-22R Mk3 WARM AIR UNIT - ELJAN WATER HEATER (GC 43-416-72), J15-22R Mk3 WARM AIR UNIT - HIJAN WATER HEATER (GC 43-416-87), J15-22R Mk3 MAF VI WARM AIR UNIT - ELJAN WATER HEATER (GC 43-416-74), J15-22R Mk3 MAF VI WARM AIR UNIT - HIJAN WATER HEATER (GC 43-416-89), J15-22R WARM AIR UNIT (GC 42-417-02), J25-32R MAF WARM AIR UNIT (GC 42-416-80), J25-32R MAF WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-14), J25-32R MK2 - MAF - JANUS AIR-WATER HEATER (GC 43-416-22), J25-32R MK2 MAF WARM AIR UNIT (GC 42-416-89), J25-32R MK2 WARM AIR UNIT (GC 42-416-85), J25-32R MK2 WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-20), J25-32R MK3 MAF VI WARM AIR UNIT- SUPERJAN WATER HEATER (GC 42-417-85), J25-32R MK3 MAF VI WARM AIR UNIT (GC 42-417-25), J25-32R MK3 MAF VI WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-44), J25-32R MK3 MAF WARM AIR UNIT (GC 42-417-14), J25-32R MK3 MAF WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-34), J25-32R MK3 MAF WARM AIR UNIT - SUPERJAN WATER HEATER (GC 42-417-84), J25-32R MK3 WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-32), J25-32R Mk3 MAF VI WARM AIR UNIT - ELJAN WATER HEATER (GC 43-416-80), J25-32R Mk3 MAF VI WARM AIR UNIT - HIJAN WATER HEATER (GC 43-416-95), J25-32R Mk3 MAF WARM AIR UNIT - ELJAN WATER HEATER (GC 43-416-79), J25-32R Mk3 MAF WARM AIR UNIT - HIJAN WATER HEATER (GC 43-416-94), J25-32R Mk3 WARM AIR UNIT - ELJAN WATER HEATER (GC 43-416-78), J25-32R Mk3 WARM AIR UNIT - HIJAN WATER HEATER (GC 43-416-93), J25-32R WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-08), JA33-43R MAF VI WARM AIR UNIT (GC 42-417-21), JA33-43R MAF VI WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-40), JA33-43R MAF WARM AIR UNIT (GC 42-417-20), JA33-43R MAF WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-39), JA33-43R WARM AIR UNIT (GC 42-417-19), JA33-43R WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-38)
manualmanualJOHNSON & STARLEY appliance manual — J25-32 MAF WARM AIR UNIT (GC 42-416-79), J25-32 MAF WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-13), J25-32 MK2 MAF WARM AIR UNIT (GC 42-416-88), J25-32 MK2 MAF WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-21), J25-32 MK2 WARM AIR UNIT (GC 42-417-11), J25-32 MK2 WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-19), J54-64 MAF VI WARM AIR UNIT (GC 42-417-28), J54-64 MAF VI WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-47), J54-64 MAF WARM AIR UNIT - JANUS WATER HEATER (GC 43-416-16), J54-64 WARM AIR UNIT (GC 42-416-70), J55-65 WARM AIR UNIT (GC 42-417-68), J70-90 MAF WARM AIR UNIT (GC 42-416-83), J70-90 MK1 WARM AIR UNIT (GC 42-416-76), JB16-20 WARM AIR UNIT (GC 42-416-94), JB25-30 MAF WARM AIR UNIT (GC 42-417-64), JB25-30 WARM AIR UNIT (GC 42-417-44), JB40-50 WARM AIR UNIT (GC 42-417-65), JT19-25 MAF VI WARM AIR UNIT (GC 42-417-26), JT19-25 MK1 WARM AIR UNIT (GC 42-416-78)
manualmanualJOHNSON & STARLEY appliance manual — J54-64 MAF WARM AIR UNIT (GC 42-416-82)
manualmanualJOHNSON & STARLEY appliance manual — J70-90 MK2 MAF WARM AIR UNIT (GC 42-417-71), J70-90 MK2 WARM AIR UNIT (GC 42-417-70)
manualmanualJOHNSON & STARLEY appliance manual — JB25PB MK1 WARM AIR UNIT (GC 42-416-01), JB25PB Mk2 WARM AIR UNIT (GC 42-416-02), JB25PB Mk3 WARM AIR UNIT (GC 42-416-03), JB25PB Mk4 WARM AIR UNIT (GC 42-416-04), JB25PB Mk5 WARM AIR UNIT (GC 42-416-13)
manualmanualJOHNSON & STARLEY appliance manual — JT19-25 Mk2 WARM AIR UNIT (GC 42-417-38)
manualNo technical questions yet for this part.
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