Vokera COmpact Combi Hot water
- Thread starter omark
- Start date
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dhw flow regulator and dhw ntc thermistor (part no 8484) are two different things.
what have you taken out and discarded and what have you tested?
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solid red light is usually primary ntc sensor but can be board
lost me there?
what is the pressure when the boiler is off/cold? should be 1 -1.5
how much does it rise when heating running ? should not go above 2-2.5
had the pressure dropped to zero when you had the red light? low pressure/lockout will give the red light
the sensor fault i was on about occurs when you cant get rid of the red light when resetting
Now I should start at begining.
The boiler was here when we moved in. it is 8 years old. It has never been good. In cold weather we have to run the water at a trickle to keep it hot.
It has been temperamental for a while now and a few days ago the red light started coming on. The boiler could run for an hour or so and then stop and red light would come on. There was a very small leak coming from the stopper in the side of the pump. I removed the clip and stopper, put a new o ring on the stopper and refitted the stopper and the clip. The leak stopped. There has been no leak since.
Now the red light comes on and the boiler stops very quickly after putting it on.
I removed the flow restrictor today and before turning on the boiler I reset the pressure to 1.5. I turned the boiler back on and all went well but the pressure was rising steadily until it went into the red. I turned on the hot water tap and left it running to bring the pressure back down and then let the boiler run to see if the pressure went back up again.
I don't know if it would have went back up because I turned it off to see (as you asked) what the pressure was when the boiler was cold.
And here we are. The boiler has been off for 20mins and the pressure is 1 bar.
The boiler was here when we moved in. it is 8 years old. It has never been good. In cold weather we have to run the water at a trickle to keep it hot.
It has been temperamental for a while now and a few days ago the red light started coming on. The boiler could run for an hour or so and then stop and red light would come on. There was a very small leak coming from the stopper in the side of the pump. I removed the clip and stopper, put a new o ring on the stopper and refitted the stopper and the clip. The leak stopped. There has been no leak since.
Now the red light comes on and the boiler stops very quickly after putting it on.
I removed the flow restrictor today and before turning on the boiler I reset the pressure to 1.5. I turned the boiler back on and all went well but the pressure was rising steadily until it went into the red. I turned on the hot water tap and left it running to bring the pressure back down and then let the boiler run to see if the pressure went back up again.
I don't know if it would have went back up because I turned it off to see (as you asked) what the pressure was when the boiler was cold.
And here we are. The boiler has been off for 20mins and the pressure is 1 bar.
After running the hot tap again and bringing the bar down to 2 then running the boiler for about ten mins I have just checked and it seems to have settled at 2 bar. Will leave it for a while and see what happens.
Will check out your reference. Thanks
Will check out your reference. Thanks
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