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Hi,
New to the forum so sorry to jump straight in with a question...but I have Worcester Bosch combi 30 boiler with a hot water issue and I need some help!
I recently purchased a house and the boiler is a Bosch Combi 30. It is relatively new (approx 3/4 years) but is out of warranty.
After moving in we went to fire up the heating and hot water but discovered the heating went on fine but the hot water has the following issue -
The boiler will heat the temperature of the water contained inside to the temperature set on the boiler. If I open a hot tap and keep the flow very low, the boiler will continue to heat the water flowing through it at the temperature set on the dial. I tested this with water flowing at a low rate for a 10 min period with no issue.
If I then open up the tap to a fairly high flow rate, the boiler will then empty the contents of the water held at the set temperature, until it runs cold, through this process the boiler sounds like it’s trying to fire up to heat the water flowing through it but never does. The water then stays at a temperature of 20 degrees as per the dial on the boiler (it doesn’t fluctuate) until it eventually flashes up with a EA fault code, which suggests it’s failing to ignite.
I’m a competent person who is in the kitchen trade so have already spoke with a couple of gas engineer friends who can’t shed any light on the situation. One suggested the secondary heat exchanger plate. The other suggested maybe a diverter valve.
I have had the heat exchanger out and it looks very new inside the inlet/outlet with no signs of crap built up inside at all so not much luck there.
The diverter valve also seems to operate when the boiler is turned on and off with the pin moving freely in and out indicating it’s not stuck.
My question is if anyone has had similar issues like this before and if anyone can maybe help before i have to get Bosch out to pull my pants down!
Thanks
Justin
New to the forum so sorry to jump straight in with a question...but I have Worcester Bosch combi 30 boiler with a hot water issue and I need some help!
I recently purchased a house and the boiler is a Bosch Combi 30. It is relatively new (approx 3/4 years) but is out of warranty.
After moving in we went to fire up the heating and hot water but discovered the heating went on fine but the hot water has the following issue -
The boiler will heat the temperature of the water contained inside to the temperature set on the boiler. If I open a hot tap and keep the flow very low, the boiler will continue to heat the water flowing through it at the temperature set on the dial. I tested this with water flowing at a low rate for a 10 min period with no issue.
If I then open up the tap to a fairly high flow rate, the boiler will then empty the contents of the water held at the set temperature, until it runs cold, through this process the boiler sounds like it’s trying to fire up to heat the water flowing through it but never does. The water then stays at a temperature of 20 degrees as per the dial on the boiler (it doesn’t fluctuate) until it eventually flashes up with a EA fault code, which suggests it’s failing to ignite.
I’m a competent person who is in the kitchen trade so have already spoke with a couple of gas engineer friends who can’t shed any light on the situation. One suggested the secondary heat exchanger plate. The other suggested maybe a diverter valve.
I have had the heat exchanger out and it looks very new inside the inlet/outlet with no signs of crap built up inside at all so not much luck there.
The diverter valve also seems to operate when the boiler is turned on and off with the pin moving freely in and out indicating it’s not stuck.
My question is if anyone has had similar issues like this before and if anyone can maybe help before i have to get Bosch out to pull my pants down!
Thanks
Justin