Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!
Ecodan E4 Error
Hi, my neighbour has had E4 communication errors for 3 mornings running and resets it. He has a 10 + year old 14 kW Ecodan with the FTC2 box. He turns his thermostats down every night from 19C to 16C and back up in the morning and asks if that could cause the problem. I didn't think so although I don't think it's a good idea especially in the recent freezing conditions when the HP is often iced up. I suggested a wiring problem like a dodgy outside power isolator or an electronic problem.Does anyone have any other ideas please?
David C
- 27 Forums
- 2,745 Topics
- 64.5 K Posts
- 362 Online
- 7,148 Members
Join Us!
Installer Finder
Degrees of Separation
Latest Posts
-
@editor Thanks for your response and recommendations. ...
By DavidB , 6 hours ago
-
RE: Do I add Air Con or MVHR to existing A2W ASHP?
I think I saw a diagram for an exhaust air dhw tank wit...
By JamesPa , 20 hours ago
-
RE: Who's your electricity provider and what's your tariff?
@papahuhu Of course, in the way of such things, there a...
By Toodles , 1 day ago
-
RE: Indevolt Batteries UK Support & Info Thread
Thanks, however that's an answer to a subtly different ...
By JamesPa , 3 days ago
-
RE: Flushing system, cleaning and inhibitor
Yes, my 50L volumiser uses the two lower ports, so ther...
By Old_Scientist , 3 days ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
@toodles Such elegant symmetry. look at my lumpy bag of...
By Papahuhu , 4 days ago
-
RE: PV and battery long payback - sense check query
Quite probably not, but you can get a 32A relay and a S...
By JamesPa , 4 days ago
-
RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
@ian-s Look forward to making contact soon! Regards, To...
By Toodles , 4 days ago
-
I don't notice mine defrosting, and most of the time Im...
By JamesPa , 5 days ago
-
RE: Do I need to change the control unit when replacing my Ecodan Air Source Heat Pump
Kind of you, @calumm, but it was @f1p who did the heavy...
By Majordennisbloodnok , 5 days ago
-
RE: Electricity price predictions
2. As EV ownershp increases it'll certainly increase de...
By EtchedPixels , 6 days ago
-
I meant to say I cannot register my kit at Energyplus… ...
By Batpred , 6 days ago




