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RE: Replacing Refrigerant on Mitsubishi Heat Pump  

By ASHP-BOBBA, 2 days ago

  So this is essentially an AC split with a hydro box which then converts the refrigerant energy to a plate-heat exchanger but in the hydro box end (so like taking that part out of a mono block and plac...
RE: Replacing Refrigerant on Mitsubishi Heat Pump  

By DavidAlgarve, 3 days ago

  @ashp-bobba I am most grateful to you and I am so pleased that you were able to summarise it and also come up with a simple alternative. When the contractor originaly visited, the young man dealing wi...
RE: Replacing Refrigerant on Mitsubishi Heat Pump  

By ASHP-BOBBA, 3 days ago

  @davidalgarve Hi, I understood all of that, so these systems have a pump down (forced cooling mode) setting which allows for all of the LEV's to be in the correct position and force the compressor to ...
RE: Replacing Refrigerant on Mitsubishi Heat Pump  

By DavidAlgarve, 3 days ago

  @ashp-bobba Thanks for your input. I stress that this contractor covers all manner of heating and cooling matters and I have more confidence in him than any of the many that I have come across here in...
RE: Compressor and Evaporator Stratification  

By ASHP-BOBBA, 3 days ago

  @trebor12345 So I think the 1st zigzag section shows some through coil sub-cooling before expansion and then the next section show the 1st stage distributor and then after this 1st evaporation it goes...
RE: Replacing Refrigerant on Mitsubishi Heat Pump  

By ASHP-BOBBA, 3 days ago

  @davidalgarve Hi David, anyone - refrigeration or AC holding an F-gas licence can pump down, rework your pipework, pressure test, evacuate and release the refrigerants back into the circuits for you, ...
RE: Replacing Refrigerant on Mitsubishi Heat Pump  

By Karl Richardson, 3 days ago

  @davidalgarve it isn't a Mitsubishi procedure. It is the F-Gas procedure which is European Regulations. Mitsubishi cannot override that. Their manuals and all other manufacturers manuals state that in...
RE: Replacing Refrigerant on Mitsubishi Heat Pump  

By DavidAlgarve, 3 days ago

  @karl-r This is a local air conditioning installer, i.e. local to me in the Algarve, Portugal. The pipework will be a similar length to the existing installation, but will, hopefully be a rather bette...
Majordennisbloodnok RE: Is this ASHP install OK?  

By Majordennisbloodnok, 3 days ago

  I think @editor and @ashp-bobba are being very polite about this but their views are clear nonetheless. Without putting any words into their mouths, I'm going to be a little more blunt with my own tak...
RE: Replacing Refrigerant on Mitsubishi Heat Pump  

By Karl Richardson, 3 days ago

  @davidalgarve @editor you need to source a local air conditioning installer. The pipework and the technology is identical and Mitsubishi Electric in Portugal will have contacts for you if you need hel...
RE: Is this ASHP install OK?  

By El3b, 3 days ago

  @ashp-bobba Attachment : 20250626_141214.jpg Attachment : 20250626_141228.jpg Attachment : 20250626_141223.jpg Attachment : 20250626_154447.jpg Attachment : 20250623_...
Toodles RE: Is this just haze or something more?  

By Toodles, 3 days ago

  @majordennisbloodnok I was giving a talk to primary school - aged pupils some years ago as this was something I did for some local schools from time to time as I worked in education and had contact wi...
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