Worcester Heatslave 15/19 Problems - Please help.

[DigitalAura]

Clear pictures of the front and internals of your boiler would be useful.

 

[DigitalAura]

Well then, it's fairly obvious - you apply the probes across the pumps terminals, to see if you get mains voltage at that point, then work back.

Removing the chrome bleed screw on the pump, to check for rotation, might be another way to ensure it is running.

I'm struggling with bad chronic fatigue and pain right now, which is giving me brain fog from hell. What normally would be obvious isn't that easy when you feel crap and everything you do takes a toll on your energy levels. I honestly thought it was more complicated than that, I expected a control signal to be sent from the controller board to tell the pump to switch on, it didn't cross my mind it could be as simple as switching the mains. Another option which crossed my mind was to use a long screwdriver like a stethoscope to listen to the pump. I can't do any of this as yet though as it's still too hot.

 

[Harry Bloomfield]

I honestly thought it was more complicated than that, I expected a control signal to be sent from the controller board to tell the pump to switch on, it didn't cross my mind it could be as simple as switching the mains.

Yep, it's as simple as that! In the controls, will be a mains switching relay, outputting live and neutral to the circulation pump.

 

[denso13]

Another option which crossed my mind was to use a long screwdriver like a stethoscope to listen to the pump. I can't do any of this as yet though as it's still too hot.

That's usually inconclusive, they can make a noise without turning. Only real way is by checking if the spindle is turning, which in itself doesn't rule out other pump issues though.

 

[Johntheo5]

That's usually inconclusive, they can make a noise without turning. Only real way is by checking if the spindle is turning, which in itself doesn't rule out other pump issues though.

That Selectric is a pretty old pump, just do as suggested above, when system cools down enough to reset the hi level temp trip just get a call for heat and immediately remove the pumps vent screw and stick in a small screwdriver to touch the end of the pump shaft, at least you can determine if its stopped, put a towel under the pump before removing the vent screw, you will get just a dribble of water, it shouldnt spray out.

 

[DigitalAura]

when system cools down enough to reset the hi level temp trip

High level trip switch never trips, it's like the thermostat switches off the burner before it gets that hot.

 

[Johntheo5]

Very good, didn't read the posts properly, but whatever, if the burner runs for awhile just test for the pump spindle turning or not.