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Constantly locking out

My Worcester Bosch Heatslave constantly locks out:
No visible water in oil
Oil pressure 130 psi
CO 11.5%
Flame detector replaced
Nozzle replaced
No line blockage

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Overheat stat or fan best of luck

Posted on Nov 06, 2009


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Contact the local distributor of the product for the exact information you need about installation. If you are on city water you should be fine.

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Thanks for that mike, it is a worcester bosch combi 24cdi heating and water can stay on for an hour then everything goes off and the red light flashes. it will come straight back on when reset, but then...


Check the pressure reading, should be about 1 bar when system is cold. Various models in the range of 24cdi. If you do not have a manual, go to,
http://www.centralheating.co.uk/Boiler-Manuals/worcester-bosch-boiler-manuals/worcester-bosch-discontinued-boiler-manuals.
Get the manual for your unit, to wards the end of install manual it has a fault finder, Also has a basic 1 in the user manual. Number of flashes how fast the light flashes which one flashing can all mean different, So get the manual and check, Some parts are easy to fix, as long as you do not touch the gas side the rest is plumbing. Come back if needed.

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I have a Heatslave 12/14 oil-fired combi boiler installed approx 8 years ago. A problem has just developed on the domestic hot water side. My local heating engineer has investigated but so far hasn't...


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Crossover is when cold water enters hot water line due to faulty plumbing part like check valve, mixing valve, or bad faucet cartridge.
http://waterheatertimer.org/Crossover.html

Jun 12, 2011 | Bosch Water Heaters

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My worcester bosch 28 si 11 series is fireing up on heating and systematicaly every couple of seconds turning the flame down to half flame then turning back up to full flame and the spark electrodes are...


This could well be a fan relay fault on the pcb, as in if the fan is cutting in and out it's triggering the pressure switch which in turn is sending confusing signals to the ignition and gas valve. Have you removed the controls connector cover and observed the righthand of the two little white boxes in the middle of the control board (pcb) with the boiler switched on? (be careful because it's live i.e DO NOT TOUCH ANYTHING) Is it sparking?

Nov 18, 2010 | Bosch Water Heaters

1 Answer

Worcester bosch 24i combi empties itself after re-pressurising Whilst re-pressurising boiler my partner (carelessly) went over the max pressure, it hissed & promptly emptied itself- I assume this...


3 psi is a little over the average, 2.5 is the optimum setting. If it empties itself, it means that the safety valve is working,which prevents any kind of damage to pipes etc...Make sure the valve is open and close at the right time and top up the system slowly rather than in a hurry. If the system requires regular top up then there must be a small leak somewhere, so it is best if you can fix that too. Remember that there are some solutions that are added to the water circulation and if you are constantly topping up with water then you are losing these solutions that prevents rust build up etc...Hope this helps.

Oct 28, 2010 | Bosch Water Heaters

1 Answer

Worcester Bosch Highflow 400 Boiler - no hot water or heating


Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} Hi, this is Worcester, Bosch Group

Although we don't currently offer live technical support online, our Technical Support department will be able to help. Their number is 0844 892 3366 - they're open 6 days a week and on average answer calls within 20 second. If you want to know more about our Technical Support department visit our website

http://www.worcester-bosch.co.uk/homeowner/customer-service/customer-technical-support

We look forward to helping you

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1 Answer

Worcester heatslave 26/32 pressure too high and water coming out overflow


? so was my response any help? - if so please rate me thanks- I did this for 21 years -so it should help. Al

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