Hello, before I get somebody in, I would like to understand what the fault is. Anybody familiar with combis?
1. pressure is 1.7bar
2. CH appears to be ok (first time I've tried it since Spring); pressure is a stable 1.5bar
3. DHW is where we have a problem; after (cold) bath boiler "Flame failure" and "Safety thermostat" lights both flashing; after reset , its working ...sort of
3a. as water is heating pressure is 2.25bar; as temp builds the pressure starts to waiver (judders between 1.5bar and 2.5bar) and sounds wrong. Issue with DHW pressure differential value?
1. pressure is 1.7bar
2. CH appears to be ok (first time I've tried it since Spring); pressure is a stable 1.5bar
3. DHW is where we have a problem; after (cold) bath boiler "Flame failure" and "Safety thermostat" lights both flashing; after reset , its working ...sort of
3a. as water is heating pressure is 2.25bar; as temp builds the pressure starts to waiver (judders between 1.5bar and 2.5bar) and sounds wrong. Issue with DHW pressure differential value?