If you can press the buttons enough to understand the current setting, i. And then tell me what it looks like I should be able to help. It's very difficult when you can't visualise something, but I promise they are not that hard! Good luck! LittleFin , 5 Nov Thanks x 1. You have described it exactly, i will give it a try over the weekend and see if i can crack it through your instructions. Thankyou very much for your help.
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Related Threads. Replies: 0 Views: Page 27 Primary heat exchanger described in Release the water connections and remove the pump. Heat Exchanger Disconnect and transfer the electrical connections to the new Central heating flow Central heating return pump. Page 30 Page 32 Fault Finding Note: This fault-finding information is for guidance only. Worcester Heat Systems cannot be held responsible for costs incurred by persons not deemed to be competent.
The electronic control system for this boiler incorporates four lights on the facia. These are used to show normal operating status. But as a secondary function, by flashing, they can also be used to help provide fault diagnostics.
Turn switch on. Section Suggestions: Cable damage, connections to or faults within pump, fan, external V controls, transformer or board. Red diode is Is there a link at Page 35 Replace control board. Is the boiler in a very Section See Section Is the boiler fully Rectify fault.
Repair or replace Page 36 Is the gas supply Rectify gas supply connected and at the problem. Remove front panel. Remove inner cover. Repair or replace Reset and restart the Reset and restart the Are the electrodes and spark electrode boiler. Can a flame be boiler. Page 37 Is the multiway connector at board position ST16 pushed Push fully home fully home on to the board?
Check the DHW sensor. Is it correctly Re-fix sensor onto pipe fitted onto the pipe with heat conductive paste between the pipe and sensor? Remove multiway connector from board position ST Page 38 Turn off boiler. Is there Does the fan run Remove the fan continuity across the before the fault connector from board C and NO terminals of occurs?
Is where green wires are Replace control board. Page 39 The gas valve mode Turn to 'NORM' switch concealed by position the facia side panel is not set correctly Light indication during fault not Control board is likely covered by above to be wet or damaged details. Check for wet board or connections. Telephone: Fax: Technical Helpline Page 41 Replace white case. Page 43 1. Flue Terminal Position Fig.
When installed the minimum clearance between the terminal and any adjoining vertical walls or obstructions must be at least mm. Page 44 The maximum equivalent flue heights, excluding the flue terminal assembly are: Table 2.
Page 45 Fig. Adaptor 3. Preparation and General Notes Ensure the ducts are correctly located into 3. Page 46 3. However, joints must be sealed and fixed as described. Align the centre of the flue spigot with the ceiling and mark the centre position.
Page 47 4. Measurement of Ducts 4. This is dimension 'E ' Refer to Fig. Page 48 4. However here is the weird bit, if I then leave it for 40 mins or so to cool down it will again fill half a bath or will heat house for 20 mins.
Its 9 years old and had a new pcb 6 years ago, this does sound to me like a dry joint again on the pcb or even a diode or capacitor that expands when the pcb gets hot. But im not the expert you are. Any ideas please?? Thanks all in advance. The above boiler works on the domestic water okay but when workin the Central Heating decides to cut out after a while and the warning light flashes about 4 times a second.
Anyone got an idea which part might be faulty. One engineer thought it might be Thermister on the Central Heating side but another said he didn't think so??? Paul Jenkinson February Hi Simon speak to the guys at Worcester. You will find the contact details on the site worcester bosch. The fan runs for 2 seconds on the boiler but the burner fails to light, Red light flashes every 4 seconds. PCB Board has been changed prior to visit.
Any Ideas.
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