ARISTON MICRO COMBI BOILER 23/27 MFFI

[pegusus26]

ARISTON MICRO COMBI BOILER 23/27 MFFI
Running 6 radiators from it NOT overly big - first rad gets hot - second rad luke warm - then boiler shuts down - then refires but not heating 3 upstairs rads - all rads bled - BUT only Luke warm heating. Anyone know how to resolve this problem please.

Would I need an extra pump?

 

[Rob]

Possible a thermistor (temp sensor) fault.

Has it just occurred or gradually been getting worse?

 

[ChrisR]

CIrculation problems are either lack of pumping,
- pump worn out or blocked

or blockages
- air, sludge

or less likely, rad valves jammed shut or boiler faulty

 

[pegusus26]

Possible a thermistor (temp sensor) fault.

Has it just occurred or gradually been getting worse?

Installed hot downstairs - luke warm upstairs