Andrews
Andrews Thermopile C509AWH
Thermopile for Andrews water heaters, including the HI FLO 33/136, used to hold the pilot flame and operate the gas valve.
At a glance
- Part type: thermopile / thermocouple
- Also known as 1820080
£186.97
£155.81 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 Andrews C509AWH is a thermopile used in Andrews water heaters. It sits in the pilot flame and generates a small electrical current that holds the pilot alight and allows the gas valve to open when there is a call for heat. It is a service part for the pilot assembly on compatible Andrews appliances.
Signs this part needs replacing
- The pilot flame lights but will not stay lit once the button is released
- No hot water and no burner ignition despite a healthy pilot flame
- The main burner fails to fire when there is a demand for heat
- The appliance shuts down intermittently or locks out during operation
- Pilot flame is present but the gas valve does not open
Before you order
- Confirm your appliance model against the manufacturer's parts list
- Check the part number on the existing thermopile matches C509AWH
- Inspect the pilot assembly and connections before replacing the thermopile
- Verify the fault is with the thermopile and not the gas valve or pilot injector
Compliance
| Barcode / EAN | 5039177517481 |
|---|---|
| Alternative numbers | 1820080 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ANDREWS WATER HEATERS ANDREWS HOT WATER SPARES | — | — | — | |
| ANDREWS WATER HEATERS HI FLO 33/136 | — | — | — |
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.
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