Ideal
Honeywell Thermocouple 600mm Q309A2739
Honeywell Q309A2739 thermocouple with a 600mm lead, listed under Ideal reference 000842 for use in a range of Ideal appliances.
At a glance
- Also known as 5022140008420, IDEAL000842
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In stock
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Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Honeywell Q309A2739 is a thermocouple supplied with a 600mm lead, listed under Ideal reference 000842. It sits in the pilot flame assembly and generates a small voltage that holds the gas valve open while the pilot is lit. It is used across a range of Ideal Classic, Concord, Cavalcade and Elan appliances.
Signs this part needs replacing
- Pilot flame lights but goes out as soon as the control knob is released.
- The appliance will not stay lit once the pilot button is let go.
- Pilot flame appears weak or unstable at the thermocouple tip.
- Repeated lockouts or the appliance shutting down shortly after ignition.
- Visible sooting, corrosion or damage at the thermocouple probe or lead.
Before you order
- Confirm the lead length required, as the 600mm lead must reach the gas valve.
- Check the appliance model against the fitment list before ordering.
- Inspect the connection at the gas valve to confirm the fixing type matches.
- Isolate the gas supply before removing or fitting the part.
Mechanical
| Part type | THERMOCOUPLES |
|---|
Compliance
| Manufacturer part number (MPN) | 000842 |
|---|---|
| GC number | 390-039 |
| Alternative numbers | 5022140008420, IDEAL000842, IDEAL000842 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| IDEAL CAVALCADE 240H BBU | 44-392-26 | 44-392-26 | — | — |
| IDEAL CAVALCADE 250H BBU | 44-392-27 | 44-392-27 | — | — |
| IDEAL CAVALCADE GLS FIRE | 37-391-21 | 37-391-21 | — | — |
| IDEAL CAVALCADE GS FIRE | 37-391-20 | 37-391-20 | — | — |
| IDEAL CAVALCADE VISA 340 BBU | 44-392-30 | 44-392-30 | — | — |
| IDEAL CAVALCADE VISA 350 BBU | 44-392-31 | 44-392-31 | — | — |
| IDEAL CAVALCADE VISA DELUXE FIRE | 37-391-26 | 37-391-26 | — | — |
| IDEAL CAVALCADE VISA FIRE | 37-391-25 | 37-391-25 | — | — |
| IDEAL CLASSIC RS 30 | 41-429-35 | 41-429-35 | — | — |
| IDEAL CLASSIC RS 40 | 41-429-36 | 41-429-36 | — | — |
Showing 10 of 155 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
IDEAL appliance manual — CAVALCADE 240H BBU (GC 44-392-26), CAVALCADE 250H BBU (GC 44-392-27)
manualmanualIDEAL appliance manual — CAVALCADE VISA 340 BBU (GC 44-392-30), CAVALCADE VISA 350 BBU (GC 44-392-31)
manualmanualIDEAL appliance manual — CLASSIC RS 30 (GC 41-429-35), CLASSIC RS 40 (GC 41-429-36), CLASSIC RS 50 (GC 41-429-37), CLASSIC RS 60 (GC 41-429-38)
manualmanualIDEAL appliance manual — CLASSIC RS 50P, CLASSIC RS 60P
manualmanualIDEAL appliance manual — CONCORD WCF 240A (GC 41-409-67), CONCORD WCF 255A (GC 41-409-69)
manualmanualIDEAL appliance manual — CONCORD WCF 440 (GC 41-407-50), CONCORD WCF 450 (GC 41-407-51), CONCORD WCF 460 (GC 41-407-52)
manualmanualIDEAL appliance manual — CONCORD WRS 430 (GC 41-407-36), CONCORD WRS 440 (GC 41-407-37), CONCORD WRS 450 (GC 41-407-38), CONCORD WRS 460 (GC 41-407-39)
manualmanualIDEAL appliance manual — ELAN 2 CF230 (GC 41-429-56), ELAN 2 CF240 (GC 41-429-57), ELAN 2 CF250 (GC 41-429-58), ELAN 2 CF260 (GC 41-429-59)
manualmanualIDEAL appliance manual — ELAN 2 CF30 (GC 41-415-73), ELAN 2 CF40 (GC 41-415-74), ELAN 2 CF50 (GC 41-415-75), ELAN 2 CF60 (GC 41-415-76)
manualmanualIDEAL appliance manual — ELAN 2 CF40P, ELAN 2 CF50P, ELAN 2 CF60P
manualmanualIDEAL appliance manual — ELAN 2 RS230 (GC 41-429-51), ELAN 2 RS240 (GC 41-429-52), ELAN 2 RS250 (GC 41-429-53), ELAN 2 RS260 (GC 41-429-54), ELAN 2 RS275 (GC 41-429-55)
manualmanualIDEAL appliance manual — ELAN 2 RS30 (GC 41-415-77), ELAN 2 RS40 (GC 41-415-78), ELAN 2 RS50 (GC 41-415-79), ELAN 2 RS60 (GC 41-415-80), ELAN 2 RS75 (GC 41-415-81)
manualmanualIDEAL appliance manual — ELAN 2 RS40P, ELAN 2 RS50P, ELAN 2 RS60P, ELAN 2 RS75P
manualmanualIDEAL appliance manual — ELAN RS 30 (GC 41-407-96), ELAN RS 40 (GC 41-407-95), ELAN RS 55 (GC 41-407-93), ELAN RS 60 (GC 41-407-97), ELAN RS 75 (GC 41-407-98)
manualmanualIDEAL appliance manual — MEXICO 2 BED SLIMLINE CF40 (GC 41-349-37), MEXICO 2 BED SLIMLINE CF50 (GC 41-349-38)
manualmanualIDEAL appliance manual — MEXICO 3 SLIMLINE CF40 (GC 41-348-01), MEXICO 3 SLIMLINE CF50 (GC 41-348-03)
manualmanualIDEAL appliance manual — MEXICO SLIMLINE 3 RS40 (GC 41-348-04), MEXICO SLIMLINE 3 RS50 (GC 41-348-06)
manualmanualIDEAL appliance manual — MEXICO SUPER CF40 (GC 41-407-20), MEXICO SUPER CF55 (GC 41-407-22)
manualmanualIDEAL appliance manual — WLX RS30 (GC 41-415-63), WLX RS40 (GC 41-415-64)
manualmanualIDEAL appliance manual — WLX RS50 (GC 41-415-56), WLX RS60 (GC 41-415-57)
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