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Hi all, I have a baxi bermuda 401 back boiler. The boilers working fine, no issues with it itslef. I started the heating, boiler heated the water, all radiators were hot. Except the one in the hallway where the thermostat control is. It was only hot at the bottom. So I figured there was ait in...

Not a good analogy with cars. There is a rule book of what is a dangerous defect with a car and what is advisory. I don't know how it works with boilers, but I was not given the whole information by the gas engineer. He didn't say do you agree me to disable the boiler? As it turns out I can...

Now, I am a sensible person, so if there was a risk of something going wrong specifically due to this insulation I wouldn't mind disabling the boiler. However the boiler was working ok, and being sensible don't mean being stupid. The damage would have been done long time ago if that insulation...

Hi, thanks for the message. It is classified as "at risk". I specifically said I wanted it to not be disabled. I said it is my liability and I am ok with that, based on experience as it was working ok for ages. I am a bit confused here, I ordered a maintenance service, meaning open it up and...

How do you know I know nothing about it? I know it's been working fine for years passing gas safety tests. I don't know if an engineer can disable a working boiler for cracked insulation and against my will. That's my question isn't it? We all know about gasmen trying to sell you a new...

Hi all, I have had an unleasent experience with a gas engineer today. I have a baxi bermuda 401 back boiler. Very old but works perfectrly. It was time for the anual servicing. I got someone to come and do it. They came, opened the boiler, and found out that the thermal insulation of the front...

Topping up the pressure sorted the problem. However I can see a solid yellow light on and a green light blinking. No such combination of lights is described in the manual. Blinking green light means stand by. And when hot water is needed boiler shows solid green light and solid yellow...

Hi all, My vokera excel 25 stopped producing hot water. I am not sure what the error code indicated by the red, yellow and green light is. I noticed that pressure is at 0. Could this be the issue? On the video after 3 min I got solid red light. This is the video on how the boiler starts. Amy...

I think it's rare to come across someone who knows what they're doing. It took me 2 attempts to find a good gas engineer to fix this boiler.

Here is a spare parts question. Which brand have the easiest to find new spare parts? I was looking for Main PCB 1.045759 for alpha e-tec 28nx just as a test search and could fond only 1 sold out on ebay.

The pump was replaced. 3 days on, the boiler works as expected. The old pump was not stuck/seized - rotates freely. When it does rotate. Seems like a weak pump - I am not sure what 'weak' means, but it seems the pump can not produce enough pressure to operate the plunger as described in the...

I mean the diaphragm was replaced with good quality part. Everything here seems in order.

My thought exactly. I dont have service and instalation manual unfortunatelly. In the one you provided there is a DOMESTIC FLOW SWITCH / FILTER P/n 1488. I wonder if this has anythign to do with the problem - it has electrical connection:

You are spot on. It is mark 1. That's the reason for asking: what part of the boiler relate water pressure information to the PCB, so it shows error 04?

Exactly that. It is one of the following: -Boiler (re)starts, error 04 is there instantly. No demand of DHW/DH, i.e room thermostat is set to 18 deg and it is 22 deg in the room. -Boiler starts, no error. DHW demand - error appears. -Boiler starts, no error. Heating demand - error appears. In...

I think you missed that. Not sure it is the diaphragm under the plunger.

Still, the problem persists. After more observations boiler can lock out with error 04 just like that - no demand for DHW or heating. Also it will unlock itself after some time - again no action on my end. Completely random. Other cases still exist where it would lock when DHW/heating demand is...

I spoke too soon. Exactly the same behaviour and error 04 returned 12 hours after PCB replacement. I will speak to the engineer on Monday, but what could be the problem? Just spoke to a friend who knows electronics. He mentioned that if the pump is faulty - i.e. something block free rotation...

Definitely not worth changing the boiler. In my case the pump was working properly. Oddly the PCB was changed 7.5 years ago, but definitely this seemed to be the problem now.

Combi boiler. Vokera offer 5 year warranty. A £700 Wrochester/Bosch also 5 years. Obviously £1500+ boiler might have 10years, but this is more of an exception. Ideal had excellent out of warranty plan for 12 years boiler.However this boiler had this issue where main heat exchanger had a crack...