Hi all
After a little help, got a client who's boiler is not calling for heat, His programmer packed up and I replaced it like for like (Drayton Lifestyle), checked the 3 port valve and that is working as it should, But this is the issue.
Call for hot water only - works as it should
Call for hot water and central heating - works as it should
Call for central heating only - nothing happens
the heating is controlled by a thermostat on the front fireplace of the back boiler (yes very old system) has no standard room thermostat and the temperature of the rooms is controlled by TRV's on the radiators.
Too me this is pointing to the thermostat on the fireplace being faulty am I correct
Thanks in advance
After a little help, got a client who's boiler is not calling for heat, His programmer packed up and I replaced it like for like (Drayton Lifestyle), checked the 3 port valve and that is working as it should, But this is the issue.
Call for hot water only - works as it should
Call for hot water and central heating - works as it should
Call for central heating only - nothing happens
the heating is controlled by a thermostat on the front fireplace of the back boiler (yes very old system) has no standard room thermostat and the temperature of the rooms is controlled by TRV's on the radiators.
Too me this is pointing to the thermostat on the fireplace being faulty am I correct
Thanks in advance