Both 30 & 40 lights flashing.
Noticed condensate trap had an inch of milky liquid in it.
Reset boiler for a good 30 seconds at which point it came back to life (a 5 or 10 second reset didn't do it). Boiler then just ran and ran, couldn't make it fail.
However...
24 hours later same problem??
Does the milky liquid suggest the condensate is backing up into the heat exchanger... and by the time I get there to investigate it has drained off?
TIA, Nick
Noticed condensate trap had an inch of milky liquid in it.
Reset boiler for a good 30 seconds at which point it came back to life (a 5 or 10 second reset didn't do it). Boiler then just ran and ran, couldn't make it fail.
However...
24 hours later same problem??
Does the milky liquid suggest the condensate is backing up into the heat exchanger... and by the time I get there to investigate it has drained off?
TIA, Nick