heatline s24 , HW but no CH

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5 Jan 2009
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Location
Merseyside
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United Kingdom
I have a Heatline S24 compact which gives me hot water on demand but does nothing when I turn on the heating. The pump is ok as it was relaced yesterday. Many thanks
 
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The pump would never cause that problem as its used on both DHW and CH.

If all the controls are correct then it may be a jammed/faulty diverter valve motor.

Or possibly a failed CH sensor. Easy to measure both sensor resistances with the boiler cold.

Tony
 
Does the heating work at all or does it just take forever and a day to come through but the boiler seems to be running flat out?
 
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Thanks for replys, heating does not come on at all and i dont know what you mean by calling for heat.
 
"Calling for heat" is a trade term used for the situation where the timeclock and room stat are all in the "on" position so that a signal is given to the boiler to switch on !

Tony
 
I have no room stat but the switch on the clock on the boiler is in the allways on position as is the dial next to the clock.
 

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