BoilerMate 2000 help

[Roblongshanks]

Hi all long time reader first time poster, hope someone can help me with this question about the lovely boilermate 2000.


Does anyone who has experience with the boilermate 2000 know if the overheat stat on the boiler kicks in does that auto trigger the radiator pump to fire up in order to cool everything down?


Reason for the question is I came home last night to find all the radiators were lukewarm even tho nothing was calling for heat and the boiler had gone into F5 lock out (glow worm). I haven't managed to reset the overheat stat yet as sod's law I left all my tools on site.
I've not had much experience with thermal store systems so could do with a little help so I know what to expect when I get home. But that leads me to my next question of does anyone have an idea what might have caused the boiler to go into F5 lock out? PCB on the boilermate seems to be ok, HW pump is working fine, CH pump is constantly on unless I turn it to immersion HW (is this because of the overheat stat?) and obviously don't know about the boiler pump as haven't been able to reset the stat yet.


Hope you can make sense of this and any help would be appreciated.
Thanks

 

[buckley plumb]

glow worms are prone to overheat if they have no pump overrun

 

[Ermintrude]

Pumps in the gledhill. What a heap o crap. Take it ur in a new build? Everything else working? Check the pumps all running. When all in demand. There is a schematic inside case . Possibly relay ? New main pcb £275 ish! Should be 240 at circ pump to boiler ?

 

[BLOD]

sounds like boilermate pcb is up the spout

f5 is overheat lockout so could be that boilermate pcb isn't turning on the boiler pump when it's needed allowing boiler to overheat, and powering up htg pump when it shouldnt be

 

[Roblongshanks]

Thanks for all your help guys, yeah it is the PCB! Reset the overheat stat and boiler fired up for a few seconds then cut out like it would when it reaches temp. Checked the PCB in the boilermate and first thing I noticed was the LCD screen was blank (should always be on apparently). Was also saying power was being sent to the boiler pump but checked the pump with multimeter and it's not reviving anything so like you said it was telling the boiler to fire but wasn't running the pump to circulate. Typical it would be the most expensive part. Managed to find a replacement board for £240 with next day delivery 🙁

 

[buckley plumb]

change it for a unvented cylinder or the thermal store without the electronics -the blue ones cant think of the name less to go wrong

 

[Unregistered]

Hi Chaps,

I'm in need of some advice if anyone has a minute or two.

A decorator drained down my boilermate 2000 to allow him to install a new radiator and now the boiler won't fire up.

The boilermate is showing 3 illuminated LEDs but nothing on the little LCD screen and it feels like only the pump on the right (out of the 3) is running.

Does anyone know how I can get the system back up again?

 

[Dotty]

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