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Curlybonce

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  1. In case anyone else gets these error messages, the problem turned out to be mice had eaten through the communication cable outside that goes to the external unit. This has been replaced and it's all working now.
  2. I've done this a couple of times and it still comes up with the same error messages.
  3. We woke up this morning to no heating and 2 error messages on the Danfoss DHP AQ air source heat pump. The messages are Com Error HP Card and Com Error Exv card. I've looked it up on the internet and it says the HP Card error message is "Communication broken between display card and heat pump card (outdoor)" and the EXV card error is "Communication broken between display card and expansion valve control card (outdoor)" We've checked both indoor and outdoor units for any loose wires but there's nothing obvious. Does anyone have any suggestions as what we could do? Thanks
  4. I'm hoping somebody can help with a problem we have with an underfloor heating manifold (Rifeng). It seems that all the red flow meters are stuck and a couple don't have any water in them although the heating is working. No matter how much they're opened or closed they stay the same. Does anyone know why this is or what we should do to make them move. What we've done instead is open them up fully and then use the blue actuators to adjust the flow but obviously we don't know if we've got them open too much or not enough. Any help would be appreciated. Quote
  5. I have put up a thread which says - I'm hoping somebody can help with a problem we have with a Rifeng underfloor heating manifold. It seems that all the red flow meters are stuck and a couple don't have any water in them although the heating is working. No matter how much they're opened or closed they stay the same. Does anyone know why this is or what we should do to make them move. What we've done instead is open them up fully and then use the blue actuators to adjust the flow but obviously we don't know if we've got them open too much or not enough. Any help would be appreciated.
  6. We did take one off but it seems to be a sealed unit and the glass doesn't come out and there wasn't anything obviously wrong with it. Thanks.
  7. Hello - I'm hoping somebody can help with a problem we have with an underfloor heating manifold (Rifeng). It seems that all the red flow meters are stuck and a couple don't have any water in them although the heating is working. No matter how much they're opened or closed they stay the same. Does anyone know why this is or what we should do to make them move. What we've done instead is open them up fully and then use the blue actuators to adjust the flow but obviously we don't know if we've got them open too much or not enough. Any help would be appreciated.
  8. Hi - we've bought a house with an air source heat pump for under floor heating so are hoping to find out more about how it works and why some of it doesn't seem to )-:
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