| Manufacturer | Make | Fault | Details |
|---|
Manufacturer | Make | Fault | Details |
|---|---|---|---|
| Worcester Bosch | CDI Classic | A1 | Water is leaking or the pump needs replacing or freeing due to the pump running dry. |
| Worcester Bosch | CDI Classic | A7 | The hot water negative thermistor coefficient (NTC) sensor is defective the hot water sensor or connecting leads need checking. |
| Worcester Bosch | CDI Classic | A8 | Break communication to FX sensor controls electrical connections need checking. |
| Worcester Bosch | CDI Classic | B1 | Code plug not detected . |
| Worcester Bosch | CDI Classic | C6 | Fan speed too low the fan lead and connector need checking and may need replacing. |
| Worcester Bosch | CDI Classic | E2 | Central heating (CH) water flow negative thermistor coefficient (NTC) sensor defective check CH flow NTC sensor and connection leads. |
| Worcester Bosch | CDI Classic | E9 | Safety temperature limiter in central heating (CH) flow has tripped the system pressure or safety temperature limiter needs checking |
| Worcester Bosch | CDI Classic | EA | Flame not detected due to a gas issue the gas supply, power supply or igniter, electrode and lead need checking contact a Gas Safe installer. |
| Worcester Bosch | CDI Classic | F0 | Internal error electrical connector contacts or programmer interface module check ignition leads are not loose. |
| Worcester Bosch | CDI Classic | F7 | Flame detected even though the appliance is switched off check the electrode assembly is dry and the pcb and flue are clear. |
| Worcester Bosch | CDI Classic | FA | Flame detected after gas shut off the gas valve needs checking hire a Gas Safe installer. |
| Worcester Bosch | CDI Classic | FD | Reset button pressed by mistake press reset button again. |
| Worcester Bosch | CDI Highflow | A1 | Pump dry run detection or pump is running in air the system pressure needs checking |
| Worcester Bosch | CDI Highflow | A5 | Tank negative thermistor coefficient (NTC) defect |
| Worcester Bosch | CDI Highflow | A7 | Domestic hot water (DHW) negative thermistor coefficient (NTC) defect |
| Worcester Bosch | CDI Highflow | A8 | Energy Management System (EMS) communication error |
| Worcester Bosch | CDI Highflow | B1 | Code plug not detected |
| Worcester Bosch | CDI Highflow | B2, B3, B4, B5, B6 | Data error |
| Worcester Bosch | CDI Highflow | B7 | Burner control error |
| Worcester Bosch | CDI Highflow | C6 | Fan defect |
Showing 1 to 20 of 727 entries