J
jouannyr
Hi all,
My heating system at home is a Buderus 500 Combi boiler, with TRV's in all rooms except the living room where I have the room stat located.
I've recently had a new flow & safety sensor installed following errors that they needed replacing. This worked for a short while before the pump gave up so we've now had a new pump fitted. All parts were replaced with exact models that Buderus recommend.
The heating works now, although it has one remaining problem
It comes on, as expected at a set time and the boiler fires up great, rads get nice and hot (CH water temp is reported at around 78 degrees) and will run for an hour or so kicking out plenty of heat... Then just as the room stat reaches temperature, the flame symbol doesn't get a chance to switch off, and the boiler returns an error stating:
"0E The boiler is in ready mode. There is a current heat requirement, but too much energy has been supplied"
Then after 10 minutes this fault clears, the boiler goes about its business again but does not fully fire up and only heats the CH water temp to between 40 and 50 degrees (and barely enough to re-trigger the room stat to go off) before it will eventually reset itself again when it reports the same above error.
I'm at a loss to explain what it is, and the full servicing and troubleshooting manual suggests troubleshooting for all error codes other than this one!
Any suggestions or advice would be most helpful - I'm an electrical engineer (not a heating engineer!) so most troubleshooting is fine for me but I don't have much heating system experience
Cheers,
Rich
My heating system at home is a Buderus 500 Combi boiler, with TRV's in all rooms except the living room where I have the room stat located.
I've recently had a new flow & safety sensor installed following errors that they needed replacing. This worked for a short while before the pump gave up so we've now had a new pump fitted. All parts were replaced with exact models that Buderus recommend.
The heating works now, although it has one remaining problem
It comes on, as expected at a set time and the boiler fires up great, rads get nice and hot (CH water temp is reported at around 78 degrees) and will run for an hour or so kicking out plenty of heat... Then just as the room stat reaches temperature, the flame symbol doesn't get a chance to switch off, and the boiler returns an error stating:
"0E The boiler is in ready mode. There is a current heat requirement, but too much energy has been supplied"
Then after 10 minutes this fault clears, the boiler goes about its business again but does not fully fire up and only heats the CH water temp to between 40 and 50 degrees (and barely enough to re-trigger the room stat to go off) before it will eventually reset itself again when it reports the same above error.
I'm at a loss to explain what it is, and the full servicing and troubleshooting manual suggests troubleshooting for all error codes other than this one!
Any suggestions or advice would be most helpful - I'm an electrical engineer (not a heating engineer!) so most troubleshooting is fine for me but I don't have much heating system experience
Cheers,
Rich
