Worcester 24CDi Manual, Installation And Servicing Instructions

34, 34 Boiler is running in “Autofrost stat” mode. See Section 18. Replace control board. (Section 16.4.23). Note: A wet board could cause this fault. Is the boiler in a very cold environment (less than 5°C)? Drop down the facia. Is the gas valve mode switch in the normal position?…

12, Worcester 24CDi 12 Fig 11 - Electrical Connections 13 1 2 3 4 5 6 7 8 9 10 11 12 1. ST12-Mains 9. Fuse-F2 2. Fuse-F1 10. Cable Entry Clamp 3. Earth Screw 11. ST13-24volt Controls 4. ST8-Room Thermostat 12. Main Harness…

20, 15.1 SERVICING To ensure continued efficient operation of the appliance it must be checked and serviced as necessary at regular intervals. The frequency of servicing will depend upon the particular installation conditions and usage, but once per year should generally be adequate. The exte…

36, 36 Remove multiway connector from board position ST16. Test resistance across contacts 17 and 18 (yellow wires). Is it between 1 kohm and 30 kohm? Test resistance across contacts 12 and 13 (red wires). Is it between 1 kohm and 30 kohm? Test resistance across contacts 7 and 8 (brown wires) and…

25, 18. Water Diverting Valve. See Fig. 36, 40. Check that the electricity supply to the appliance is turned off. Drain the central heating and domestic hot water circuits as described in Sections 16.3, a and b. Hinge down the facia panel into the Servicing Position as described in Section 15.3, …

32, 32 Is the facia on/off switch turned on? `(Clockwise) Is there a 230V AC live supply across Terminal ST12 pins L and N Has fuse F1 blown? Replace fuse and investigate cause. Suggestions: Cable damage, connections to (or faults within) pump, fan, external 230V controls, transforme…