Hello, looking for some help.
I have a Vaillant ecotec 428 fitted in september with a honeywell programmer and honeywell wireless thermostat.
I have issues with the boiler cycling on and off all the time, it does it on the way upto reaching the wireless thermostat termperature and once at temperature it is on and off all the time to maintian its temperature. I'm used to having a traditonal boiler so i'm not familar as to if all the cycling is correct or not but its all the time. Does this sound normal ?
I've started reading about modulation to solve the problem and was considering if vaillants own controllers would solve the problem by allowing the boiler to run at a lower rate for longer periods of time. On looking at the issue i have found a variety of problem with 'over cycling' of this boiler on the web but they seem to relate mainly to a weather compensator which i dont have.
I've had the heating calculations redone and it suggests a requirement of about 20kw and is currently set a 24kw. Water flow time is set at 68.
My original installer tells me all is well but given the things he's got wrong so far i dont really trust what he says. I had my parents engineer out (the one who found a range of errors made by the installer which have mostly now been put right).
I now dont know if condensing boilers do cycle all the time and its correct or if its a boiler issue or a controller issue ? In addition I've had a suggestion of another possible cause of a problem of water flow 'pinching' ? due to a mix of microbore and 15mm pipes.
Anybody able to suggest as i'm now stuck and just dont know where to turn ?
Thanks in advance.
I have a Vaillant ecotec 428 fitted in september with a honeywell programmer and honeywell wireless thermostat.
I have issues with the boiler cycling on and off all the time, it does it on the way upto reaching the wireless thermostat termperature and once at temperature it is on and off all the time to maintian its temperature. I'm used to having a traditonal boiler so i'm not familar as to if all the cycling is correct or not but its all the time. Does this sound normal ?
I've started reading about modulation to solve the problem and was considering if vaillants own controllers would solve the problem by allowing the boiler to run at a lower rate for longer periods of time. On looking at the issue i have found a variety of problem with 'over cycling' of this boiler on the web but they seem to relate mainly to a weather compensator which i dont have.
I've had the heating calculations redone and it suggests a requirement of about 20kw and is currently set a 24kw. Water flow time is set at 68.
My original installer tells me all is well but given the things he's got wrong so far i dont really trust what he says. I had my parents engineer out (the one who found a range of errors made by the installer which have mostly now been put right).
I now dont know if condensing boilers do cycle all the time and its correct or if its a boiler issue or a controller issue ? In addition I've had a suggestion of another possible cause of a problem of water flow 'pinching' ? due to a mix of microbore and 15mm pipes.
Anybody able to suggest as i'm now stuck and just dont know where to turn ?
Thanks in advance.