Central Heating Timer

steveeboy · Posted: Fri Oct 12, 2007 8:21 pm Post Subject: Central Heating Timer

I have recently replaced my Honeywell ST699 timer with a new one, unfortunately since fitting nothing works

!!!! There is no display on the timer and it does not reset. would it be possible that it is a faulty timer???

It is in a S type circuit

clf-gas · Posted: Fri Oct 12, 2007 9:48 pm Post Subject:

Have you replaced with a ST699

Have you wired like for like

Has the fuse popped in spur

OK,OK enough Q an A.

Is there live to the timer and a sound nuetral.

It is posssible to purchase a brand new dodgie timer

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steveeboy · Posted: Fri Oct 12, 2007 10:24 pm Post Subject:

Yes it was a ??New St 699 ???. I will check the live on the timer

steveeboy · Posted: Fri Oct 12, 2007 10:25 pm Post Subject:

All the fuses are OK

clf-gas · Posted: Fri Oct 12, 2007 10:33 pm Post Subject:

steveeboy wrote:

Yes it was a ??New St 699 ???. I will check the live on the timer

At 23.24, then.

Quote:

All the fuses are OK

Fek your quick on test, want a job fella

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steveeboy · Posted: Sat Oct 13, 2007 1:48 pm Post Subject:

Sorted, the hot water auto valve switch was welded in the closed position and there was a fault in the programmer switch for the hot water. So engineer has replaced both and everything is now working. HAPPY DAYS

thank you clf-gas for your help