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Last seen: May 6, 2026
This may be totally unrelated to your problem but I was observing a similar saw tooth plot on a Mitsu with Melpump. The issue was caused by...
@papahuhu I understand that quite common for them not to make clear the minimum output. I think 30-35% of the badged output is about average
@papahuhu Well its certainly not helping! What is its minimum output at various flow temps. That should give you a clue. Oversizing of heat pumps is r...
@papahuhu Its really tricky to get these things remedied. Good luck. For interest how big is your heat pump and your house?
@toodles Glad you got your money back Toodles. Unfortunately I didnt buy my wind farm shares with a CC 🤣
@papahuhu Hope you get somewhere with them. Sounds like you know what the problem is. Did you pay by credit card? If you cant get anywhere, it might...
@papahuhu OK, filled cavity and 300mm insulation would sound about right. I think you are correct and they missed the fact that the attic insulation i...
@papahuhu Im struggling to understand why they took a bigger radiator out? What type of construction is your house? when was it built? At 28 W/m2 Im g...
@papahuhu That may be telling. Measure your radiators. Take a photo and measure the room its in. Let me know roughly its date of construction and we s...
@papahuhu I would concentrate on the upstairs radiators. If the downstairs rooms are warm then there is enough heat when the emitters are working prop...
@papahuhu I think the rear sensor is probably a bit of a wild goose chase, unless its faulty.
@papahuhu OK. what about the lockshield valves, have you tried opening those with the TRVs set to max? Are the upstairs radiators a similar temperatur...
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