Andrews
Andrews Transformer 7700257
Transformer 7700257 for Andrews Water Heaters Fastflo and Fastflo PLUS water heaters.
At a glance
- Also known as 1822786
Showing prices
£258.58
£215.48 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 Andrews 7700257 is a transformer used in Andrews Water Heaters appliances. It is listed as a control component across the Fastflo and Fastflo PLUS water heater ranges.
Signs this part needs replacing
- The appliance fails to power up, with no display or indicator lights.
- The appliance does not ignite or start when there is a demand for hot water.
- The transformer runs hot, buzzes audibly, or shows signs of burning or discolouration.
- Fuses blow repeatedly when the appliance is powered on.
- Operation is intermittent, with the appliance cutting out during use.
Before you order
- Confirm your appliance model appears in the fitment list above.
- Check that the part number on the existing transformer matches 7700257.
- Isolate the electrical supply before removing or fitting the transformer.
- If a fuse has blown, establish the cause before fitting a replacement transformer.
Compliance
| Alternative numbers | 1822786 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ANDREWS WATER HEATERS ANDREWS HOT WATER SPARES | — | — | — | |
| ANDREWS WATER HEATERS FASTFLO LWHI49 | — | — | — | |
| ANDREWS WATER HEATERS FASTFLO LWHIC56 | — | — | — | |
| ANDREWS WATER HEATERS FASTFLO LWHIX49 | — | — | — | |
| ANDREWS WATER HEATERS FASTFLO PLUS LWHIC56 | — | — | — | |
| ANDREWS WATER HEATERS FASTFLO PLUS WHIC56 | — | — | — | |
| ANDREWS WATER HEATERS FASTFLO WHI49 | — | — | — | |
| ANDREWS WATER HEATERS FASTFLO WHIC56 | — | — | — | |
| ANDREWS WATER HEATERS FASTFLO WHIX49 | — | — | — |
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.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.