All my own fault, I'm hoping someone will be kind enough to help me out of trouble. Yesterday I changed my central heating room thermostat and the fused spur that feeds my hot water and heating system. When I went to turn it all back on again the heating worked fine, as did the hot water - for about 2 minutes. The boiler fired up and worked ok, then just stopped. When I checked I found I had forgotten to replace the 13A fuse in the new spur with a 3A one suitable for the boiler. Have I just turned my boiler to toast? I'd also appreciate some tips to locate the component I need to replace and rough prices if possible. Thanks
2007-03-06 07:31:48 · 5 answers · asked by Stone0898 1 in Home & Garden ➔ Maintenance & Repairs
Your boiler is unlikely to be toasted, although it was silly not to have the proper fuse, (previous occupants of my house had a 13A fuse in this spur and I had it there for several years before I found out).
Check the fuse you are using to see if it has blown, if so then replace with a 3A fuse that you know is working, (if you've no fuse tester then put it in a tablelamp plug and see if the light still works). Also check the fuse/circuit breaker in the main fusebox.
Next check your wiring up, has a wire come loose that you thought was securely screwed in place.
Thirdly check the room stat, is it wired correctly, (have you wired to the open teminals but not the common), are there any black marks inside that were not there yesterday that could indicate that this is toasted.
If the old stat was not faulty but just being changed for accuracy/aesthetics then put it back on and see if the system works again, if so the fault is in the new thermostat.
If you still can't work it out call a heating engineer and tell him exactly what you have done first before asking if the boiler is toast and make sure he checks your work before going to the expensive and technical bit that only he understands.
2007-03-06 07:58:23 · answer #1 · answered by Alan C 2 · 0⤊ 0⤋
The fuse is only there to protect the system in the event of a short circuit on the boiler side. You cannot have caused damage by fitting the wrong fuse. Certainly replace it with the correct 3A fuse. Instead, look to the connections in the new thermostat. Did you tighten them fully? The fact that it worked for a couple of minutes is hopeful. If you had wired it incorrectly the fuse would have blown straight away - with a loud pop if it was 13A!. See if there is a fuse on the boiler control board (often a glass 1A fuse). Then double check your wiring to the stat. Hope this helps.
2007-03-06 15:51:10 · answer #2 · answered by Michael B 6 · 0⤊ 0⤋
Look where the room stat is wired into the boiler, is the terminal damaged. You may be lucky check to see if the boiler has got a fused panel usually at the rear of the stat on the board. Look for the glass fuses being black or the fuse wire broken. You may have wired the stat wrong, did you cause a surge. Or is the fused spur wired wrong. If its the main feed you will find a fuse inside the boiler by the mains wire. Hope you didn't blow a board this would be pricey.
2007-03-06 15:48:53 · answer #3 · answered by Anonymous · 0⤊ 1⤋
I would guess that you have connected the room stat wrongly, were there 2 or 3 wires at it?? If 3 you have probably reversed the neutral and switch wires. The fuse is not an issue it would still blow on a short, and what you have done will not have affected the boiler.
2007-03-06 16:10:13 · answer #4 · answered by jayktee96 7 · 0⤊ 0⤋
try the quick blow fuses on the p.c.b ! cost around 30p each most boilers have 2
2007-03-06 17:02:50 · answer #5 · answered by ANTONY P 1 · 0⤊ 0⤋