Marcin

Can you please tell me how did they reconfigure your pumps? Similar problem, ASHAP cuts and go to immersion to heat the water. I have this type but not sure how they need to be set if my problem is flow as well. Does anyone know how this should be set? I have underfloor heating Hi Dave. Thank you for the reply. My FTC tells pumps to turn on rather than control their speed. One turns for water which is lowara and 2 pumps work when heating is on. I looked in manual for both and all settings could apply. I just want to ensure i have right flow within the system but unfortunately not able to decide which setting to choose for heating water, shower, floor heating and radiators.

Can you please tell me how did they reconfigure your pumps? Similar problem, ASHAP cuts and go to immersion to heat the water. I have this type but not sure how they need to be set if my problem is flow as well. Does anyone know how this should be set? I have underfloor heating and 2 radiators.

Would this be right setting for water heating? My immersion seems to kick in when water reheats rather than pump. When I stop and re start it’s starting with pump. Can anyone advise?

Hi. I have set it up pump to 47 degrees. I have put 2 thermistors in the bottom and top of the tank. Pump now heats to set temperature and does not use immersion. Looks like positive sign. All resolved by myself and people like you with advice. I am hoping all will continue in good way.

Hi thank you for reply. Grey box is not even connected hence why I believe there is no temperature on the screen. Can you advise where this should be connected on FTC control board? Hanging cables are thermistors/sensors. These are THW 1,2,5. THW 5 has two coming out of control board. I believe these should be inserted into spaces on the tank. See picture, I am unsure if both in the same space or in two separated places. First pic is top of the tank and second is bottom. Do you know where these would go? Droops on ASHAP pic are rain so nothing to worry. I agree this is set up messy and was like this from day one. As it is not my house I keep asking but people dont take any notice so I try and sort it myself. thank you for your help and would appreciate more thoughts on above. Ps. Looking at above video with water setting, I have found out from comments that actually this type of Mitsubishi pump R32 only heats water to 48 degree after which immersion kicks in if you want it hotter. Apparently system calculate what would be quicker and most efficient way to get to temp above 48.

Also. On that video he can see temperature of hot water on FTC controller. I cant see any temperature. Is there way to set this somewhere?

Pump is on max speed. Does it also need to be changed on controller in installer settings? Its on speed 3 but can go up to 5

This is my water cylinder. I have similar setting as on video. I wanted to ask about sensor he is talking about. Where does it need to be with size of my tank? Same as his at the bottom? As mine seems to be at the top. I will post picture of the pump in next post.

Hi. Thanks for sharing. I have same tariff for electricity through the day and night. i have set max temp at 50. When water was hot I had only heat pump engage to keep temp. Today when water started not been so hot, I had pump automatically engaged but only worked for 10 minutes and went to switch to immersion. Is this what should happen? Outside temp is 13 degrees.

Hi. Thanks for the reply. Main issue was wiring. Guy was able to sort things out to the point that heating has started working. Sensors THW 1,2 and 5 connected to the board but nowhere else. Not sure how system could know how hot water was in the tank. Temp is set in 55 as this was installer recommendation. I will decrease this to 50 and se what will happen.

So Installer came and straight away stated issue with wiring. Further, temp sensor for tank was not even connected. Now I have hot water. I can see pump working, however immersion seem to be kicking in on the end of the cycle. Not sure if this is ok, water set to be heated to 55 degrees. Heating seems to be working ok at the moment.

Hi Everyone. I hope this is right place to post my concern. I had moved in to the property with heat pump and solar panels 5. Weeks ago. Since day one things are nightmare. Ecodan Mitsubishi pump. Floor heating downstairs and 3 radiators upstairs. Query 1 Not sure where to start. Initially had no hot water or heating and P0 error came up. Electrician came could not diagnose issue and stated he has bypasses something and now I can use immersion to heat water. Hot water was working however outside pump never engaged. P0 error was still there and shutting down system. I have rang helpline from Mitsubishi and they advised to change battery in downstairs thermostats. I did that and error was gone but than changed to P1 error. P1 advise from manual and mitsubishi person has not helped. I was advised to change sensor settings to main RC and P1 error should resolve. This has not happened and when I put heating to curve mode or target flow temperature and want hot water system engages two pumps light up and after few minutes error P1 comes back. When I put heating to target room temperature and heat water, pump works few minutes and than there is loud clank and bolt appears on panel. Bolt is present all the time when water is heating and pump do not spin outside, this does not sound normal to me do you agree? Also when I stop water heating there is even louder clank from control board and bolt disappear. I believe P1 error is something to do with thermistors, i can only see five of them but all are tucked in under foam and touching pipes around cylinder. They are not even connected to anything but only to control board. One of them is freely hanging and not inserted anywhere. Contractors sent by developer had no clue what to do and one even said pump is not commissioned for different heating mode and he does not see issue. It is just nightmare and not sure where to head anymore. Any advise or support would be appreciated.