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John, I've been looking through my manual to see what it could be. There isn't much to the diverter valve really, it's usually the diaphragm that splits but you've already renewed that. (There is a small valve on the inlet pipe to the diverter valve, you haven't accidently turned that off?)...

John, The burner should have at least fired up when you shorted out the microswitch. Did it?

John, Try watching the pin while you adjust the thermostatic mixing valve. Maybe you need a little more flow to push the diaphragm over. You can also remove the screw that holds the plastic knob onto the mixer valve, turn the knob round and refit it in a different position to give more range of...

It's a bit difficult diagnosing these control problems from afar but I'll try to help. The supply from the programmer hot water "OFF" will hold the mid-position valve actuator in the heating position with everything else off. It is possible to pick up stray induced voltages but also the...

The amount of current drawn by the winch will be relative to the physical load applied, not the winch current rating. The manufacturers have given a current rating of 25 amps (continuous?). This is 300Watts of power or 0.4 horsepower. i.e. not much. It means that it can do this much work before...

There are plenty of external oil boilers but I'm sorry I don't know about gas. Here's a link for you to begin some research: http://www.bsee.co.uk/news/fullstory.php/aid/4632/Putting_gas_boilers_out_in_the_cold.html

Oil or gas Boiler?

Dave, Glos Council contracting web-site here: http://www.gloucestershire.gov.uk/index.cfm?articleid=4090 If you get lots of work, I'll make the sandwiches!

A quick check reveals the following government web-site which sends you e-mails of small government jobs, just like the £99 company but for FREE! I would suggest that if you sent your £99 off then the people that phone around would just sign you up to the government web-site. (I'll see what...

Dave, In reality you would only travel so far to do a job. If you are interested in council jobs then why not search your local council web sites and find out if they post the details for companies to apply to be a supplier or even if they post "Request for Contract Bids." That's all these...

This capacitor is not polarised. Determine which terminals are common with your multi-meter and connect one cable to one side and one to the other. (There are some capacitors that are "polarised" and they are known as "Electrolytic capacitors". They are marked as Positive and Negative or...

If the solenoids are indeed the Danfoss ones that you show then the coil resistance is normally approx 100ohms. The Satronic ones are about 2.2kOhms. How many wires go to it? Some have 2 coils, a pull-in and a hold-in coil as someone has already said. If there is a centre opening, as in your...

Ian, I have access to British Standards. If you can possibly get the number of the standard that this guy is referring to then I can confirm what it says. I must also say that British Standards are not law. They are advice but can be made law by being called up in other legal requirements...

I presume that this boiler was fitted into the bathroom since the introduction of the 17th edition of the wiring regulations in the middle of last year? If so the major changes that are relative are the one about the change to zones in locations containing a bath or shower and, more...

BARCUD, Installing Electrics in a kitchen and / or bathroom is Part P notifiable. This means that you either do it yourself and get it inspected by your local building control but need to notify them first; or you have to get someone qualified to Part P to do the installation. I think that...

A pressure gauge of the type that you have can "over-read", "under-read", or move by the incorrect value for a set input pressure or even a combination of these defects. However if the gauge "increases" or, in your case "decreases" its indication, then the pressure is actually changing but maybe...

I agree with oilman (it's always best to... 'cos he's right!!). You could get by with a smoke pump but with oil the price it is I suggest getting someone with the full Oil pressure and Flue Gas analysis kit. The problem is that you just want them to set the fuel / air and not do a full service...

Good work Jack. The cartridge is sticking down in the "heating" position. A common fault. I buy cartridge elements for about £35, they come with the special tool to remove / fit them. (long nosed pliers will also remove the thing but best to use the proper tool.) My supplier sells the Baxi...

I can't always let Oilman beat me to it so I'll go for the faults in this priority order: 1. Flow Switch - does the burner kick in when you turn on a hot tap? 2. Store Stat - is the store hot to touch? 3. Diverter Valve - um, I doubt this but see other threads on heating on all the time.

I don't do gas but I've had similar with an oil boiler system and I guess that the control systems are similar. It all depends on if you have any zone valves and how they are wired. In a couple of cases the wiring was incorrect but this had shown up only after the cylinder thermostat had failed...