UPDATED: Air Source Heat Pumps/Air Con - Full Info & Guide, is it cheaper to run than mains gas?

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  • verityboo
    verityboo Posts: 1,017 Forumite
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    Can you remove the motor from the valve and manually set the valve to the correct position and see if the water reaches the correct temperature?
  • Moorlander
    Moorlander Posts: 10 Forumite
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    Hi Folks,

    I hope I am doing this right by simply posting a reply, if not I apologise to HelpJack by highjakking his thread.:o

    Anyway we are building a conservatory which is about 70 cubic metres,and I'mplanning to heat and cool it with an ASHP.

    Bearing in mind its for the conservatory only , and we are already a little over budget, i was hopiong someone could recommend a brand other than the premier heat pumps but without resorting to a nameless chinese import on fleabay. I was thinking maybe Panasonic or LG etc.

    Any recommendations as to brand and output to help me through the ASHP minefied would be very much appreciated.

    Thanks for reading.:)
  • helpjack
    helpjack Posts: 81 Forumite
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    Moorlander - if I can get our hot water working again that is the next project for the conservatory.

    You can get a big name invertor for around £500 may be a bit less depending on size. Some of them come with pre-gassed pipes so can be self installed.
  • helpjack
    helpjack Posts: 81 Forumite
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    An update on my heating/hot water

    I've noticed that the flow gets hot but the return doesn't get warm at all so either the pump has gone or there is an airlock.

    The valve thing was a bit of a red herring.

    I've got some air out of the system but with no luck so far.

    It actually has 2 pumps. One on the flow and one on the return. I've bled the one on the flow but the one on the return doesn't have an easily accessible bleed valve. I don't want to mess too much.
  • Moorlander
    Moorlander Posts: 10 Forumite
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    Hi, could you give me some details for where I could get a decent inverter for £500, just some names to google would be fine. Especially pre-gassed.


    Cheers
  • helpjack
    helpjack Posts: 81 Forumite
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    I guess this is a last ditch attempt to try an get some help and some heating and hot water. Does anyone know anyone who could come and help us. We are now in a complete mess. We have no heating or hot water. I have called Mitsubishi and they told me I just needed a plumber. We have had 2 plumbers out and they generally say they can't see anything wrong but didn't want to touch it because of the specialist nature. I called Mitsubishi and asked them if they could send someone out and they flatly refused saying they wouldn't send someone out to people without a service contract. I then called the only specialist within 50 miles who has come and replaced 2 pumps at god knows what cost and said that was the only thing they could think of. The result is I have spent probably £700 and we still have no heating or hot water. I have called Mitsubishi again who again have refused to come out and said it is now down to the engineer who came out and replaced the pumps. So we are stuck. He doesn't know what's wrong and I just can't afford to replace every single part at contractor rates.

    The heat pump outside is making strange noise now so it looks like the problem lies there rather than the plumbing.

    We are pretty desperate now
  • pd001
    pd001 Posts: 871 Forumite
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    helpjack wrote: »
    I guess this is a last ditch attempt to try an get some help and some heating and hot water. Does anyone know anyone who could come and help us. We are now in a complete mess. We have no heating or hot water. I have called Mitsubishi and they told me I just needed a plumber. We have had 2 plumbers out and they generally say they can't see anything wrong but didn't want to touch it because of the specialist nature. I called Mitsubishi and asked them if they could send someone out and they flatly refused saying they wouldn't send someone out to people without a service contract. I then called the only specialist within 50 miles who has come and replaced 2 pumps at god knows what cost and said that was the only thing they could think of. The result is I have spent probably £700 and we still have no heating or hot water. I have called Mitsubishi again who again have refused to come out and said it is now down to the engineer who came out and replaced the pumps. So we are stuck. He doesn't know what's wrong and I just can't afford to replace every single part at contractor rates.

    The heat pump outside is making strange noise now so it looks like the problem lies there rather than the plumbing.

    We are pretty desperate now

    Cant help with the heatpump situation and hopefully someone else will be along to help you with that.

    How did you pay your plumber?
    By the sound of it you have been charged for work that didn't fix the fault?
    If you paid by credit card could you not try and get the money back because the work was unsatisfactory?
  • lovesgshp
    lovesgshp Posts: 1,413 Forumite
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    Are there any alarms showing in the heat pump info?
    Have you checked the filters on the flows?
    What is the strange noise you are hearing. Is the fan blocked?
    As Manuel says in Fawlty Towers: " I Know Nothing"
  • helpjack
    helpjack Posts: 81 Forumite
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    I have paid yet I'm waiting for the invoice.

    We get a U1 alarm which is high pressure at the Ecodan normally associated with poor flow. There is poor flow you can feel the flow get hot and the return stays cold and then the system shuts down.

    Where are the filters? The flow setter is broken see we can't see what the flow is. I mentioned this to the guy yesterday and he said it wouldn't make any difference as its open so won't impede the flow. It could be gunked up but the Ecodan was making such strange noises last night we just switched it off. The fan only comes in for a short time and was making a rattling whining noise. It just didn't sound right

    The immersion is also not working so we can't even get hot water that way.
  • lovesgshp
    lovesgshp Posts: 1,413 Forumite
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    There is supposed to be a filter on the water input side of the system, from what I have read. Have you got the exact model details?
    You need to get the flow setter replaced to be able to see what is actually happening.
    It could be a problem with the zone valves, possibly a faulty thermistor. Had a similar problem with a gshp, where one zone was not heating.
    You do need to get at the other pump, as it may have air in it if just replaced. Has the Ecodan got a function in the menu to manually check operation of all functions (pumps, valves etc)?

    With the external unit being noisy, fan could be out of balance. Check the vanes are clean.
    As Manuel says in Fawlty Towers: " I Know Nothing"
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