Hamworthy Heating is a UK manufacturer specialising in commercial and light-commercial boilers, water heaters and heating systems. Their Stratton and Wessex ranges are widely used in schools, offices, hospitals and large residential buildings.
Hamworthy Boiler Fault Codes
All Hamworthy Fault Codes 24
| Code | Fault | Severity | Type | View guide |
|---|---|---|---|---|
| E01 | Ignition Failure The boiler has failed to ignite after the start-up sequence. | High | Engineer | View Guide |
| E02 | Flame Loss Flame detected during operation has been lost. | High | Engineer | View Guide |
| E03 | Overheat Protection The safety temperature limiter has been activated. | High | Engineer | View Guide |
| E04 | Low Water Pressure System water pressure has dropped below the safe operating level. | Low | DIY Check | View Guide |
| E05 | Fan Fault The combustion fan is not operating within expected parameters. | High | Engineer | View Guide |
| E06 | Air Pressure Switch Fault The APS is not confirming correct air flow. | High | Engineer | View Guide |
| E07 | Flow Sensor Fault The flow NTC temperature sensor is faulty. | Medium | Engineer | View Guide |
| E08 | Return Sensor Fault The return NTC temperature sensor is faulty. | Medium | Engineer | View Guide |
| E10 | Gas Valve Fault The gas valve is not responding correctly. | High | Engineer | View Guide |
| E11 | PCB Fault Internal error on the printed circuit board. | High | Engineer | View Guide |
| E12 | Pump Fault The circulation pump is blocked or not running. | High | Engineer | View Guide |
| E13 | Condensate Trap Full The condensate trap needs emptying or the drain is blocked. | Medium | DIY Check | View Guide |
| E14 | Communication Error Internal communication fault between modules. | High | Engineer | View Guide |
| E15 | Flue Temperature Limit Flue gas temperature has exceeded the safe limit. | High | Engineer | View Guide |
| E16 | Gas Pressure Too Low Insufficient gas supply. | High | Engineer | View Guide |
| E17 | Overheat Return Return water temperature too high. | High | Engineer | View Guide |
| E18 | Rapid Temperature Rise Flow temp rising too quickly. | High | Engineer | View Guide |
| E19 | Diverter Fault Valve stuck. | Medium | Engineer | View Guide |
| E20 | Condensate Fault The condensate drain is blocked or frozen. | Medium | DIY Check | View Guide |
| E21 | eBUS Fault Communication line fault. | Medium | Engineer | View Guide |
| E22 | Outdoor Sensor Outdoor sensor faulty. | Low | Engineer | View Guide |
| E23 | Frost Protection Frost protection running. | Medium | DIY Check | View Guide |
| E24 | Combustion Error Air/gas outside limits. | High | Engineer | View Guide |
| E25 | EEPROM Error PCB memory error. | High | Engineer | View Guide |