I have a central heating system managed by a Honeywell ST6300A programmer. Each time it needs to fire up the boiler the programmer just clicks and resets itself, turning off for a few seconds before coming straight back on. This is the same for programmed times or if you use the manual override. Can anyone help? Do i need to replace the programmer or is it something more serious?
Honeywell ST6300A switches itself off
- Thread starter MurphyUK
- Start date
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Hi, similar problem,,,the st6300a switch is suspect., I think. Moved house and it was handling hot water fine. The other day I tested the central heating.
Now it sends out hotwater all the time. The switches are set to off and the little red indicator lights on the switch are off. But the.slides do.seem a bit worn.
The hotwater pump seems on all the time. Not sure if boiler gravity fed but seems odd. The boiler is a greenstar ri condensing.
Don't think its the boiler theermostat.
Top guess is its the timer slide. Going to hunt for replacement. Might try for a better model. Is it hard to.wire backplate. I'm keen diyer but not an electrician. Advice?
Now it sends out hotwater all the time. The switches are set to off and the little red indicator lights on the switch are off. But the.slides do.seem a bit worn.
The hotwater pump seems on all the time. Not sure if boiler gravity fed but seems odd. The boiler is a greenstar ri condensing.
Don't think its the boiler theermostat.
Top guess is its the timer slide. Going to hunt for replacement. Might try for a better model. Is it hard to.wire backplate. I'm keen diyer but not an electrician. Advice?
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