A Class OV constantly calling for heat

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A Class OV constantly calling for heat Empty A Class OV constantly calling for heat

Post  Andy11 on Tue Jun 25, 2019 1:13 pm

Hi All,

Boilermate A Class OV is constantly calling for heat.

Similar to several recent posts on here, if I go through the control panel readings I get:

S.1 62
S.2 64
S.3 41
S.4 47
S.5 63
S.6 63
S.7 86

On the display board it says:
Middle Store sensor calling for heat
Bottom store sensor calling for heat
HW Programmer calling for heat.

There was a problem with the boiler pump, but this was replaced last week.

Any ideas why it's constantly calling for heat?

Thanks in advance
Andy

Andy11

Posts : 10
Join date : 2013-02-13

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Post  onis_uk on Thu Jul 04, 2019 11:48 pm

So no one's figured out this constant demand issue then? Where's the forum owner? He must have come across this before...

onis_uk

Posts : 6
Join date : 2019-06-09

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Post  onis_uk on Thu Nov 21, 2019 4:38 pm

Hi, anyone got any ideas? My boilermate just won't get up to temp, flow from boiler is 80+c and my boiler mate never goes above about 68-70. Any suggestions on what is causing this?

onis_uk

Posts : 6
Join date : 2019-06-09

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Post  Rando on Fri Nov 22, 2019 10:41 am

Are the sensors working correctly?


Rando

Posts : 13
Join date : 2017-02-04

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