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As picture shows below, during a routine service these were found to be missing, I classed it as At Risk, but is it? The terminal is present but the vanes are missing.[img]

No Hot water on Gloworm Compact 100e, changed the diverter diaphragm and the domestic hot water flow micro switch but still no hot water? The green lights come on for HW when demanded, and CH when HW turned off. Any pointers please?

When fault finding for no CH or no HW or both on a Y-Plan system, how do you know when the 3 port valve or other components are at fault. The reason I'm asking is I've been taken off servicing to help with breakdowns with very little breakdown experience (we all started sometime) I have the...

Problem with an intermittent fault. When the fault arises the 'Flame Failure' neon and the 'Fault on Fan or Flue' neon both flash together. I have checked the APS tubes, venturi, checked flue for any blockages and have ordered an APS, but have a niggling feeling it may be the PCB? Anyone...