Gas boiler not firing - Myson MEP2c timer

PauloMN

Hi folks, I have an issue with my gas boiler not firing at all for the past couple of days. I have a Myson MEP2c timer controlling it, and I've noticed that the orange backlight is not working on the unit anymore. I guess there's a couple of relays in this unit and I'm wondering are they shot? It seems to be getting voltage at the back alright, as when I take the timer unit off the panel, I can read 220V off the contacts.

I'm thinking it might be worth trying a replacement timer (around €45) before calling someone out to look at it, because I think it's the timer rather than anything with the boiler. Would this be worth trying?

Thanks all.

shane0007

Are you getting 230V from terminals 3 or 4, i.e. either of the switched live outputs?

PauloMN

Here's what I get when I put my voltage tester between the different terminals:

Between Neutral and 3 = 0V
Between Neutral and 4 = 19V
Between Live and 3 = 239V
Between Live and 4 = 216V
Between Live and Neutral = 239V

This is with the timer off the panel and just checking between the different points on the panel where the wires come in.

shane0007

Ok. Sorry I meant with timer switched on for 3 & 4. Test between neutral & 3 or 4. You won't be able to with cover on as you will need to check on cable.

However, if timer was playing up, it is likely to be at fault.

PauloMN

shane0007 wrote: »

Ok. Sorry I meant with timer switched on for 3 & 4. Test between neutral & 3 or 4. You won't be able to with cover on as you will need to check on cable.

However, if timer was playing up, it is likely to be at fault.

Yeah I can't get at the terminals to test with the timer in place, unless I take the whole panel off. I seem to remember the timer clicking - like a relay click - when switching on the heating or water, and I'm not getting that. I'd be fairly certain the timer is shot, esp. given the back-lighting is also not working.

Might risk buying a replacement unit and putting it on.

Thanks for the help anyway.

shane0007

It's a mains 230V time clock only so no relay.

PM your fellow Mod DGOBS. He is in your area & should have that clock. I will replace it with him when I see him shortly. I have lots of that exact clock so you can have it FOC.

PauloMN

shane0007 wrote: »

It's a mains 230V time clock only so no relay.

PM your fellow Mod DGOBS. He is in your area & should have that clock. I will replace it with him when I see him shortly. I have lots of that exact clock so you can have it FOC.

Will do, thanks a lot, will pay whatever for it though. Will PM him.

shane0007

PauloMN wrote: »

will pay whatever for it though

No need. It's nice to be nice, sometimes.....