Boilermate 3 - Heating malfunction won't turn off

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Boilermate 3 - Heating malfunction won't turn off

Post  Veepee19 on Tue Apr 18, 2017 2:44 am

Hi can anybody please help me. As of last night I can't turn my heating off. It's always on the timer. I did last night turn it off by putting the switch down to manual control but the heating didn't turn off! I completely turned the whole boiler switch off off for a few minutes to reset and it seemed to work for a while and over night the heating turned itself on again! Any help ? Advice please? Thank you

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Re: Boilermate 3 - Heating malfunction won't turn off

Post  mike on Thu May 04, 2017 12:16 pm

Boilermate III or Boilermate A class ?

Sounds like PCB but needs checking.

Mike

MGC/H2O
Norfolk

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Re: Boilermate 3 - Heating malfunction won't turn off

Post  Gary1976 on Fri Sep 15, 2017 1:52 am

I'm having the identitical issue, can you tell me if you managed to get yours sorted, was it the main pcb??
Thanks
Gary

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Boilermate SP A 4200 wall thermostats won’t shut heating off.

Post  Csimy on Sat Sep 01, 2018 9:31 am

Hi Folks,

I’m having some issues with my Boilermate SP A 4200.

After summer I decided to switch the heating back on to test it. The heating now comes on even if the wall thermostats (both zones) are turned all the way off in constant or timed. The only way I can get the 3 port control valve to close again is to switch off the main power to the unit and leave the heating off on rocker switch. The HW side of things is fine.

When you rotate the wall thermostat to require heating, should a relay click on and off on the PCB? Nothing changes on the PCB at the moment.


I suspect the Main PCB controller is faulty (Pijnenburg GT490)

Thanks Chris

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