Vitodens 300 WB3
- Thread starter Agile
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- 7 Nov 2004
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I called you because you are the all seeing oracle of boilers.
Thanks for the advice !
it worked great!!!
Thanks for the advice !
it worked great!!!
In addition to the A4 fault which was only shown on one day there is the primary fault and is described as a communication error with the ( seperate ) blending valve unit on Circuit B.
This affects Circuit A ( the boiler controlled one ).
The varispeed pump is turning but it is not creating any significant flow in the circuit it controls which goes down four floors.
I am guessing that its not running up to speed. Is that the symptom that you have encountered or is it a total pump failure.
Do you know what voltages/waveforms to expect to measure on the connections to the pump?
Tony
This affects Circuit A ( the boiler controlled one ).
The varispeed pump is turning but it is not creating any significant flow in the circuit it controls which goes down four floors.
I am guessing that its not running up to speed. Is that the symptom that you have encountered or is it a total pump failure.
Do you know what voltages/waveforms to expect to measure on the connections to the pump?
Tony
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