My hot water is only warm
- hot water only when heating is on
- hot water only works when heating is on
- hot water only works when heating is on worcester boiler
- hot water only works when heating is on combi boiler
Does central heating need to be on for hot water.
Heating comes on with only hot water selected
Hi, I have a fully-pumped central heating system which has been working fine and nothing has been touched. For the last 3 days, the radiators have heated up when the hot water program is ON and the heating is OFF.
When the heating and hot water are both, the radiators continue to get hot whilst the hot cylinder is calling for heat. Turning down the room stat makes no difference.
I suspect a problem with the Danfoss 3-port valve.
Diverter valve
I checked the valve when the problem last occurred and the valve lever was in the midway position. I assume, that with hot water only selected at the programmer, the lever should have been in the (sprung) hot water position.
Does this suggest a fault with the microswitch in the valve head (or a broken or detached wire).
Over the years, I have had to replace the valve head 3 times, the motor once and the valve body once.
It wouldn't surprise me with such bad luck that it's the valve causing problems yet again but I'd appreciate a second opinion please.
- hot water only works when heating is on system boiler
- hot water only works when heating is on british gas