L
lingfield
Morning All
Before you all burst out laughing I have a query regarding a Myson Midas Si combi.
I’ve seen these boilers slated on various forums but I’ve had mine since they first appeared about 30yrs ago and this is only the third time it’s thrown a wobbly.
Like various equipment the pcb is probably it’s Achilles heel but having replaced it with a brand new board the problem persists.
The DHC works fine, the CH works fine. But not simultaneously.
The problem should be obvious but having changed both the main pcb and the programme selector I’m now at the head scratching stage!
Example – Programme set to CH on / HW off – CH working fine
Switch to CH on / HW constant and the CH pump immediately switches off.
Am I missing something obvious here?
Any suggestions much appreciated.
Thank you
Ian
Before you all burst out laughing I have a query regarding a Myson Midas Si combi.
I’ve seen these boilers slated on various forums but I’ve had mine since they first appeared about 30yrs ago and this is only the third time it’s thrown a wobbly.
Like various equipment the pcb is probably it’s Achilles heel but having replaced it with a brand new board the problem persists.
The DHC works fine, the CH works fine. But not simultaneously.
The problem should be obvious but having changed both the main pcb and the programme selector I’m now at the head scratching stage!
Example – Programme set to CH on / HW off – CH working fine
Switch to CH on / HW constant and the CH pump immediately switches off.
Am I missing something obvious here?
Any suggestions much appreciated.
Thank you
Ian