Honeywell st9100c programmer wont turn on and its brand new

[Tjpace]

Hi All

I'm looking for advice on my hot water and heating issue.

I have an oil fired Potterton statesman boiler that works absolutely fine when the Honeywell st9100c programmer works.

However lately the programmer last about a day and turns off completely. At first, I could change the fuse in the spur and it would power up again for a day but now it won't at all.

I'm wondering if it is wired wrong or there's not enough voltage to the programmer to come on or even maybe the Honeywell cylinder stat

l641a1039 that may be faulty and stopping it.

Obviously, I'm not a skilled tradesman in this area and would like advice or a quote for someone to fix if it's someone you are able to repair.

I have attached some pictures of the wiring in the spur, programmer and 10 block for your reference.

Best Regards
Tj

 

[Deleted member 267285]

Check for any loose/pinched connections would be a good start. Make sure you’re working safely though, if you’re unsure, don’t mess. You haven’t said what area you reside.

 

[Tjpace]

Hi CBW, thank you for your reply.

I have checked all connections and tided them up but still no joy.

I'm in the ss13 2dj basildon area.

Tj

 

[Deleted member 267285]

There maybe someone on here who can assist in your area, but some of the terminals in the timer look suspect.

 

[ericmark]

Quick glance, and orange does not seem right.

In the main, wire colours mean nothing, except from the motorised valve, where orange normally goes to boiler and pump.

Basic Y Plan and the boiler is fed direct from tank stat. The motorised valve does nothing to get domestic hot water, as that is the default state.

 

[Tjpace]

Should the orange wire be located somewhere else or not at all?

Thanking you both for your time

Tj

 

[Deleted member 267285]

Have an internet search on Y plan or C plan (depending on your setup).

 

[Tjpace]

Do you gents perhaps think it maybe the RCD board or a circuit breaker causing the issue? All over appliances on there work unless I put a bigger amp fuse in the spur than a 3 or 5amp it will trip that one circuit.

 

[ianmcd]

your programmer wont trip anything, it is what it is controlling that is tripping your electrics, take a pic on your phone and mark the wires, remove and isolate everything except the L.N& E does your programmer now come on ?

 

[ericmark]

Typical Y Plan, the Orange from the motorised valve goes no where near the programmer here called a time controller.

From the instructions small variations but again no orange to the programmer.

So you have a black and grey going to where there should be no wires, nothing is going to 1 = H/W off, so it will not give central heating only, and nothing going to cylinder stat which should turn hot water on, and the Honeywell ST9100C as far as I can tell is a single channel programmer anyway so could not do CH and DHW however way you wired it.

 

[Tjpace]

View attachment 276693
Typical Y Plan, the Orange from the motorised valve goes no where near the programmer here called a time controller. View attachment 276695From the instructions small variations but again no orange to the programmer. View attachment 276696
So you have a black and grey going to where there should be no wires, nothing is going to 1 = H/W off, so it will not give central heating only, and nothing going to cylinder stat which should turn hot water on, and the Honeywell ST9100C as far as I can tell is a single channel programmer anyway so could not do CH and DHW however way you wired it.

Hi mate,

Are you saying remove the orange altogether. I can put grey into one. What color wire should go in to 3 you have marked cylinder?

I have tried with just the three standard wires and still don't come on. I tried a new programmer as well same one but still no joy

 

[ericmark]

I use to have a boy friend remote left around by my daughter, and on pressing button, it said "Do it again and do it properly." there are so many errors I can see, that is really the only option.

I had same in this house, central heating wiring was in a real mess, so it was down to try and work out what cable went where, then start again from scratch.

 

[Tjpace]

I use to have a boy friend remote left around by my daughter, and on pressing button, it said "Do it again and do it properly." there are so many errors I can see, that is really the only option.

I had same in this house, central heating wiring was in a real mess, so it was down to try and work out what cable went where, then start again from scratch.

Unfortunately I inherited this but will have to just get someone in to do what you guys do for a living.

Thank you all for your input.

 

[ericmark]

The main thing is you know your limitations. I am not domestic and not a plumber, I am just an electrical engineer, however at least I could sort out my own wiring.

In fact I do wonder if a non electrical guy had bought this house, how he would have got on? I prepared all the wiring ready, then got a plumber to fit the pipe work, he sub contracted to a heating guy, who admitted he did not have a clue how I had wired it all up, rather worrying, as 70 now, so at some time will not be able to do the wiring any more.

I use to do all sorts, I have a programmable logic controller and all the programming skills to use it, however I have not used it, as would be really hard to get some one else to fix it.

As an industrial guy, domestic does seem rather simplistic, but is seems finding tradesmen to work on it is hard, not surprising really, I would have not worked for the pittance I paid the heating and ventilation engineer, hope he does not read this.

But I would say now is the time to decide what you want, it would be easy to install some thing like EvoHome which does it all, but the cost is silly, so we install a compromise, the geofencing was also a failure, sounds good, but simply did not work.

But if he has to rip out and start again, you need to decide how much control you can afford, and how far to go.

 

[Tjpace]

your programmer wont trip anything, it is what it is controlling that is tripping your electrics, take a pic on your phone and mark the wires, remove and isolate everything except the L.N& E does your programmer now come on ?

It didn't buddy