Hi
I have recently installed an HCM200 system with 10 HR80 TRVs and a HC60NG as a boiler relay. This all seems to work fine with one issue remaining. This is that the HC60NG is switching on the boiler for 1 minute in (roughly) every ten for no apparent reason e.g. when every room is up to temperature or the temperature settings have all just been reduced (like last thing at night). I have reset the system to factory setting, lowered room settings to 13 degrees and tried changing any other parameters that seem to relate to this but all to no avail.
I only really noticed because it is a condensing boiler with quite a noisy fan with a long overrun, but it is remarkable consistent.
Has anyone else found this and possibly a fix for it?
The parameters values at present are (started with defaults):
Eco offset 3.0C
eco thres 13.0C (was 17.0C so tried lowering to be sure).
Heating setpoint 14.0C
Boiler demand 18C (have tried 10 and 25)
Frost protect 8.0C
Setp. demand Off
Room parameters:
Local lock off
Range 10-25C
Optimization On (tried off too)
Software v6.00 UK 22 Nov 2004 12:00
433V13 868VA1
I have recently installed an HCM200 system with 10 HR80 TRVs and a HC60NG as a boiler relay. This all seems to work fine with one issue remaining. This is that the HC60NG is switching on the boiler for 1 minute in (roughly) every ten for no apparent reason e.g. when every room is up to temperature or the temperature settings have all just been reduced (like last thing at night). I have reset the system to factory setting, lowered room settings to 13 degrees and tried changing any other parameters that seem to relate to this but all to no avail.
I only really noticed because it is a condensing boiler with quite a noisy fan with a long overrun, but it is remarkable consistent.
Has anyone else found this and possibly a fix for it?
The parameters values at present are (started with defaults):
Eco offset 3.0C
eco thres 13.0C (was 17.0C so tried lowering to be sure).
Heating setpoint 14.0C
Boiler demand 18C (have tried 10 and 25)
Frost protect 8.0C
Setp. demand Off
Room parameters:
Local lock off
Range 10-25C
Optimization On (tried off too)
Software v6.00 UK 22 Nov 2004 12:00
433V13 868VA1
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