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Electronic warfare (EW) is any action involving the use of the electromagnetic spectrum (EM spectrum) or directed energy to control the spectrum, attack an enemy, or impede enemy assaults. The purpose of electronic warfare is to deny the opponent the advantage of—and ensure friendly unimpeded access to—the EM spectrum. EW can be applied from air, sea, land, and/or space by manned and unmanned systems, and can target communication, radar, or other military and civilian assets.

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  1. V

    Multifit 7 day timer Central Heating Timer - help required

    Can anyone help with how to operate a Multifit 7 day timer (part no 247207) on my Baxi boiler? I can set the clock and on/off times, but dont know how to select the programmes. Programmes 1-3 are pre-set, and 4-20 can be programmed in. But how do i set it for say, programme 9, timed for the...
    • Vanessa
    • Thread
    • baxi boiler central central heating system electronic help help required multifit required screen timer
    • Replies: 0
    • Forum: Plumbing Jobs | The Job-board
  2. S

    Thermostat / Timer question

    Hi, I currently have quite an old boiler, which has recently be serviced. It's working fine, except that the built in timer has stopped (It's a basic dial unit that just turns on and off the boiler). I've taken a look and I can confirm that there is power getting to the unit, it just seems...
    • species
    • Thread
    • boiler central heating system control electronic manual power question remove replacement switch temperature thermostat timer water
    • Replies: 4
    • Forum: Plumbing Jobs | The Job-board
  3. P

    overflow pipe

    if relocating the cold water cistern in a loft. What's the best way to get the overflow pipe outside through the soffit/eaves?
    • plumdum
    • Thread
    • ceiling cistern cold cold water drilling electronic inside loft overflow overflow pipe pipe tiles wall water
    • Replies: 9
    • Forum: Plumbing Jobs | The Job-board
  4. A

    Overheating Boiler

    Hi Guys I am need of help I have a Poterton 80e Profile boiler. The problem is that it always overheats. Sometimes it trips the saftey but sometimes before this happens it overboils into the header tank and causes the pipes to bang (I guess due to air in the pipes and the boiling water). My...
    • Apollofuzz
    • Thread
    • bleeding boiler boilers burner combi control electronic gas gas safe gravity header tank hot loft oil over run overheat overheating plumber potterton pressure problem pump rules safe stock valves
    • Replies: 10
    • Forum: Plumbing Jobs | The Job-board
  5. C

    Whic Central Heating Filter to go for?

    Which Central Heating Filter to go for? Hi All I'm getting my boiler changed and want to fit a central heating filter at the same time, but am wondering which is the best to go for, as I've seen a few different types but aren't sure on their differences. I've also read that the filters can...
    • Cold
    • Thread
    • boiler central central heating system city cylinder electronic filter leak magnaclean oil pipes plumbing price remove supply system tee tf1 valves water work
    • Replies: 10
    • Forum: Plumbing Jobs | The Job-board
  6. N

    Ideal mini 24 problem?

    Hello all...happy new year to you!! I have been asked to look (favour),at an ideal mini 24 boiler fault....now,for the last 15 year i have only worked on commercial appliances so have little experience with domestic boilers....the problem is this.......the boiler fails to start up in the...
  7. B

    One-a-larf

    There I am, Christmas day stretched out in the bath, Looking forward to christmas dinner, What happens? A power cut...the third this month and the forth this year. I am on a combi boiler in the annexe so no hot water to shower off with, Son who lives in the main house has an old wet system...
    • bobpape
    • Thread
    • appliance bath boiler boilers central heating system combi combi boiler electronic flame head hot hot water install mains no hot water plumbers power problem shower system van water work
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  8. G

    Domestic Central Heating controls

    Hello, I am new to this site, this is my first post. After 32 years of reliable service I have, within the last week, changed my gravity fed open vent boiler to a new Valliant 630 system boiler and S plan layout (Hot water plus 2 heating zones). I asked the plumber for a wireless programmer...
    • god55
    • Thread
    • boiler central central heating system control controls cylinder domestic electronic gravity hot hot water hot water cylinder job plumber radio supply system vent water wireless work
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  9. R

    Cool Radiators Downstairs

    Hi guys and girls, I'm a first time poster so apologies if my knowledge comes across a tad green. My system is a standard boiler system (i.e. not a combi). I've got an issue where my radiators downstairs are cooler than the ones upstairs. The upstairs ones are nice and hot but the downstairs...
    • Riz
    • Thread
    • air blockage boiler central heating system cold combi cool downstairs drain electronic flow local plumber noise pipe problem pump radiator radiators remove sludge system test valve water work
    • Replies: 24
    • Forum: Plumbing Jobs | The Job-board
  10. S

    Aqualisa quartz problem

    model - quartz pumped processor "on the wall" poblem - the control light (red) stays on all the time can't switch off, no water coming through. Switched off at mains waited a while, switched on, and heard two small clunks and that was all, light still on ,no water. This has only started after we...
    • soulboy
    • Thread
    • aqualisa control digital electric electronic inside mains no water power problem quartz switch wall water
    • Replies: 2
    • Forum: Plumbing Jobs | The Job-board
  11. B

    Ideal Isar 24 HE

    Just been out to one of these the hot water works fine but no central heating when switched on the display shows 7 then 0 then d for dhw pre heat the burner lights after about 30 secs it shuts down the burner gave it 2 mins for the pump over run but but did not go back to 0 for standby. The pump...
    • bonesy60
    • Thread
    • boiler boilers central central heating system diverter valve electronic flow free head hot hot water ideal isar noise parts potterton power problem pump remove reset switch tap valve wall water
    • Replies: 23
    • Forum: Plumbing Jobs | The Job-board
  12. A

    Baxi 105E Instant problem

    Hi, have a baxi 105e instant boiler, had a leak on the aav on the pump this in turn corroded the lower seal and bolt, whilst replacing the seal and bolt noticed a few drips of water coming from the upper chamber un done the cover and water pored out all the pcb( i had the power off). suspect...
    • ajelec10
    • Thread
    • baxi boiler burner central heating system damage electronic fault flame hot hot water instant leak pcb power pressure problem pump safe safety seal water
    • Replies: 5
    • Forum: Plumbing Jobs | The Job-board
  13. H

    Vailliant ecotec how to open electronic box

    title says it all, basicallly my knobs to adjust the temperature have been broken off and i want to put them back in and i want to know how to open the electronic box
  14. B

    Combi Faults

    I was reading a paper the other day, about the possible future of boilers. It seems nearly all of them, will soon be like a motor car with electronic ignition, that you can't repair unless you know the fault codes and can link up your laptop to the boiler. Problem is, it seems that each...
    • Bernie2
    • Thread
    • adaptor boilers central cheap code combi difficult electronic faults gas gas boiler hot industry law maintain price problem public software system temperature test tools valve
    • Replies: 10
    • Forum: Plumbing Jobs | The Job-board
  15. W

    motorised valves help

    Once a motorised valve has powered up and moved the valve from hot water to central heating should the motor stop running and lock in position bare in mind the spring tension against it, or should it carry on running to keep the spring tension valve in the correct postition. Any help would be...
    • wat5190
    • Thread
    • central central heating combi confused diverter valve electronic fitting fix google head heating help hot hot water hotwater manual motorised motorised valve motorised valves power test valve valves water
    • Replies: 9
    • Forum: Plumbing Jobs | The Job-board
  16. D

    Potterton Gas Mag Valve Needed

    Hi Guys, my father in laws central heating system has packed up and we need a Potterton Neterheat 1016 Electronic Gas Mag Valve. Apparantly the part no. is 907219. If anyone could help i would be very grateful?? Many thanks
    • Dazza2471
    • Thread
    • boiler boilers central central heating system electronic gas needed potterton pressure replacement system valve
    • Replies: 3
    • Forum: Plumbing Jobs | The Job-board
  17. P

    new member

    Hi paul H from nth London plumbing and heating engineer for 20 years good electronic back ground hope to solve problems, find answers to new regards
  18. N

    Potterton Profile 100e Boiler problem

    Hi, Have problem with the above I think. Boiler will run on HW only no prob. When put on CH only or HW+CH runs for about 20 mins and then stops, pilot stays lit, pump keeps running, room stat still calling boiler fan still running. Just main flame not on. If you turn everything off and leave for...
    • nickcat65
    • Thread
    • air boiler boiler fan burner central heating system electronic flame gas gas safe hot hot water oil pilot light potterton problem profile pump radiator safe system temperature valve water
    • Replies: 6
    • Forum: Plumbing Jobs | The Job-board
  19. M

    Excessively noisy system

    Hi everyone, I have recently moved into a new house. The central heating system works fine but from time to time the noise coming from the airing cupboard is so loud that it wakes my children. Due to this we can't have the heating on at night, obviously its getting colder now and I cant afford...
    • marzi
    • Thread
    • boiler central central heating system control electronic head hot hot water noise noisy plumber problem pump radiators system tank thermostatic water
    • Replies: 4
    • Forum: Plumbing Jobs | The Job-board
  20. J

    Electronic wall stat

    Hi, just qualified and started to find that the real work is not as easy as the college made out!:). Whilst changing a ball valve on a job the customer mentioned that the heating is always on and the rad on the landing is always hot. When checking it turned out that all the other rads had the...
    • judoginge
    • Thread
    • boiler central heating system electronic fix hot job mains mechanical power problem pump system test tips valve wall wiring work
    • Replies: 6
    • Forum: Plumbing Jobs | The Job-board
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