Andrews
Andrews Water Servo By-Pass 7700309
Water servo by-pass set 7700309 for Andrews Fastflo water heaters.
At a glance
- Also known as 1822874
Showing prices
£159.12
£132.60 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 water servo by-pass set is a component used in Andrews water heaters. It forms part of the water servo assembly that manages water flow through the appliance. This part is identified by part number 7700309.
Signs this part needs replacing
- Reduced or no hot water flow at the outlet
- Water temperature fluctuating or failing to reach the set point
- Visible leaks or drips around the water servo assembly
- The appliance failing to fire or locking out during a hot water demand
- Unusual noises from the servo valve during operation
Before you order
- Confirm your appliance model against the fitment list above
- Check the existing part number is 7700309
- Isolate both water and power supplies before fitting
- Consult the manufacturer's parts list if your model is not listed
Compliance
| Alternative numbers | 1822874 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ANDREWS WATER HEATERS ANDREWS HOT WATER SPARES | — | — | — | |
| ANDREWS WATER HEATERS FASTFLO LWHI49 | — | — | — | |
| ANDREWS WATER HEATERS FASTFLO LWHIX49 | — | — | — | |
| ANDREWS WATER HEATERS FASTFLO WHI49 | — | — | — | |
| 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.