Description
Baxi 7693978 3 Way Diverter Valve Assembly – Refurbished
The Baxi 7693978 3 Way Diverter Valve Assembly is a professionally refurbished replacement component designed for selected Baxi, Main and Potterton ERP combi boilers.
The diverter valve controls the flow of heated water between your central heating system and domestic hot water supply. A faulty diverter valve can cause heating and hot water issues, temperature fluctuations, or boiler lockouts.
This refurbished unit offers a cost-effective alternative to purchasing a brand-new assembly while maintaining reliable performance.
Compatible Boilers
Baxi Duo Tec ErP Series
- Duo Tec 24 Combi ErP (DC) – GC No. 47-075-96 DC
- Duo Tec 28 Combi ErP (DC) – GC No. 47-075-97 DC
- Duo Tec 33 Combi ErP (DC) – GC No. 47-075-99 DC
- Duo Tec 40 Combi ErP (DC) – GC No. 47-077-03 DC
Baxi Combi ERP Series
- 24 Combi ERP (EC) – GC No. 47-077-04 EC
- 28 Combi ERP (EC) – GC No. 47-077-05 EC
- 33 Combi ERP (EC) – GC No. 47-077-06 EC
- 40 Combi ERP (EC) – GC No. 47-077-07 EC
Main ERP Series
- Main 25 Combi ERP (EC) – GC No. 47-467-12 EC
- Main 30 Combi ERP (EC) – GC No. 47-467-13 EC
Potterton Gold ERP Series
- Gold 24 Combi ERP (EC) – GC No. 47-393-43 EC
- Gold 28 Combi ERP (EC) – GC No. 47-393-44 EC
- Gold 28 Combi ERP LPG (EC) – GC No. 47-393-45 EC
- Gold 33 Combi ERP (EC) – GC No. 47-393-46 EC
Potterton Promax ERP Series
- Promax Combi 24 ERP (EC) – GC No. 47-393-47 EC
- Promax Combi 28 ERP (EC) – GC No. 47-393-48 EC
- Promax Combi 33 ERP (EC) – GC No. 47-393-49 EC
Potterton Titanium ERP Series
- Titanium 24 Combi ERP (EC) – GC No. 47-393-50 EC
- Titanium 28 Combi ERP (EC) – GC No. 47-393-51 EC
- Titanium 33 Combi ERP (EC) – GC No. 47-393-52 EC
- Titanium 40 Combi ERP (EC) – GC No. 47-393-53 EC
Additional Compatibility
- Myson Boilers using part number 7693978
Common Fault Symptoms
A faulty diverter valve may cause:
- No hot water
- No heating
- Heating and hot water running together
- Intermittent hot water
- Boiler lockouts
- Temperature fluctuations
- Poor heating performance







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