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Both red lights flashing on alpha cd28c, no heating or hot water

The pressure is ok, no leaks, but there is no heating or hot water, and the two red lights are flashing at the same time

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Posted on Jan 02, 2017

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SOURCE: Water heats but stops perculating

Check the spring under the grounds basket on the pump tube. This is supposed to hold the end of the tube down in the heater well. It should compress when the lid is pushed down on the basket and twisted to lock in under the handles.  I have found a good source of parts for Faberware urns and percolators at goodmans.net. The thermostats and heating elements can be easily replaced and the urn returned to original condition. Rich of Colorado

Posted on May 24, 2008

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SOURCE: SDW60 - AL08 Error - No Hot Water

Hi fridge-1,
I had the same problem and fixed it by fitting a new control board .
Best of luck.
michael-howe

Posted on May 16, 2009

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SOURCE: alpha 240e boiler wont fire up for hot water, will for heating

most likely the diverter valve.. when hot tap turned on the movement of the water through the valve operates a diaphragm which pushes a pin/button//switch to tell the boiler to fire up

Posted on Sep 02, 2009

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SOURCE: got a Alpha HE CB33

Problem is normally the hot water flow switch -

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SOURCE: Honeywell ST6400C programmer

Hi yes sound like it not working on hot water only it would check ou the wiring on this side

Posted on Feb 18, 2010

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1 Answer

I had an issue with turning off the fill valve on my alpha boiler and the pressure went to 1.5 bar when cold and rises to 2.75 when the heating comes on is this ok.


You need to check with the boiler/system specifications to discover the correct pressure.

An overpressure condition should be dealt with by a safety valve that usually vents to the outside of the building - if it is working correctly. There have been incidents of this external vent freezing causing dangerous pressure to build in the system. I understand a modification is simple and inexpensive but I don't know any details.

Our pressurised system runs at about 2.5 bar hot, or at least it used to do when it was younger...

Jan 25, 2017 | Water Water Heaters

1 Answer

I have a Worcester 24di combi boiler and it's not working I have a red flashing tap light have represurised the pressure but still not working I have no heating or hot water can you help me please


Red flashing lights usually mean trouble.
There is not enough air getting to the combustion chamber, or the chimney is not working properly. (Stopped up flu)
If this is not a pretty obvious problem, it is better handled by someone who knows a lot more about it than us.

Feb 26, 2016 | Water Water Heaters

1 Answer

Alpha cd28c boiler loosing water and pressure through pr valve when heating is on,and when then switched off needs repressuring to use heating again.no obvious leaks.new pr valve been fitted.pressure


I assume losing pressure through the PR means Pressure Relief Valve (PRV) or temperature pressure (TPR). Open in TPR may mean boiler is overheating/overpressurized. Open in PRV means the Pressure Reducer/Fill Valve in the fill line of the boiler is broken.
House Water Pressure in a home is 30/40 PSI min to 60-80+PSI max.
Boiler PRV/TPR are set at 30 PSI open (SYSTEM PRESSURE) so too high a house water pressure will open the PRV/TPR. Replace the reduction regulator on/in the fill valve assembly

Oct 20, 2014 | Water Heaters

1 Answer

Hydro-Quip pack in my Hydro-Spa hot tub no heat.


Hi,
3 Flashing dots (display) - Water flow problem check for closed valves, dirty filters, water level, pump/wet end operation/defective pressure switch.
If your spa has been off for a while its likely something is blocking the lines.
Flashing dots & Lit light on display - Hi-limit trip, reset power to clear.

Nov 16, 2011 | Hydro Quip Inc Pool & Spa

1 Answer

Free manual for alpha boiler model CD28C


http://www.alpha-innovation.co.uk/downloads

Sep 26, 2010 | Heating & Cooling

1 Answer

I have a alpha cd32 boiler,and i keep having to top the water up within the boiler,so to get hot water and heating again.i have checked for water leaks and nothing is found,however i did check the outlet...


Pressure relief valve - replace
The internal seal gets bunged up with dirt & scale and then leaks water [pressure] to that outside pipe
To avoid draining the whole system, turn off the two central heating taps on the 3/4 pipes and then operate the valve manually and / or disconnect - only a small amount of water will escape / drip to below the boiler
Replace valve and fill as before.
If you think your system needs flushing out - now is a good time
Turn off mains electricity to boiler before starting work

Mar 07, 2010 | Watts 3/4 Pressure Relief Valve

1 Answer

Flashing red light on Worcester 24i junior combi boiler


Pressure is ok? at 1 bar or above
I think on this one there should be a reset button [red] on the left hand top of the casing - or lower the control panel [ phillips screw on each side] and the button is on the left of the base plate. Press this and try the heating.or hot tap
P.S. if you're on a prepayment meter check you have gas.

Nov 08, 2009 | Water Heaters

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