Advice please on controls for my Daikin 14kw 3H HT heat pump with 3H HT W internal unit and Megaflo cylinder
@johnmo Hello johnmo. The radiators used to go cold and when I checked the indoor unit the panel showed an error code. Before they did more work on it around last Christmas there were sometimes two errors, and it was difficult to get it to start on a couple of very cold mornings. After that it was usually a flow sensor malfunction code. Pressing reset usually fixed it for a while, but it did sometimes cut out 5 times a day. After they removed the extra circulation pump at the end of May this year there were no more errors and I have never had to re-set it.
That's a low flow condition. Do you have lots of zones (thermostats) if so what's happening is the zones are closing off, and the circulation pump cannot get enough water through the system.
@johnmo Hello again johnmo. That's no longer a problem, as removing the unnecessary pump has now fixed it. My question was whether the plumber was correct in saying that I don't need a weather compensation curve, and the advice that I have had on here so far suggests that I do. The time switch, that he set for twice a day like a gas boiler, and the thermostat inside the front door controlling the whole system also don't seem to be very sophisticated.
Posted by: @joninorkney@johnmo Hello again johnmo. That's no longer a problem, as removing the unnecessary pump has now fixed it. My question was whether the plumber was correct in saying that I don't need a weather compensation curve, and the advice that I have had on here so far suggests that I do. The time switch, that he set for twice a day like a gas boiler, and the thermostat inside the front door controlling the whole system also don't seem to be very sophisticated.
Low and slow is best, running like a gas boiler you will need a second mortgage. So weather compensation is best
- 26 Forums
- 2,118 Topics
- 46.6 K Posts
- 115 Online
- 4,523 Members
Join Us!
Latest Posts
-
With their balancing process Im pretty sure all rads co...
By JamesPa , 7 minutes ago
-
The sad end of my ECO4 installation.
This afternoon I was advised by a charity that was help...
By Dwynwen , 2 hours ago
-
RE: Why do we need pressurised systems?
@iaack I enquired of Wattson and the reply was very muc...
By Toodles , 3 hours ago
-
RE: Replacing Refrigerant on Mitsubishi Heat Pump
@davidalgarve It should just be recovered by both servi...
By dgclimatecontrol , 6 hours ago
-
RE: Who's your electricity provider and what's your tariff?
Aggregators have been recognised for many years, and it...
By Transparent , 6 hours ago
-
RE: Help me keep the faith with my air source heat pump installation
Great news I edited my previous post (probably af...
By JamesPa , 10 hours ago
-
RE: Double or Triple Glazed Windows?
@toodles Glad to hear things are progressing well for y...
By TRBob , 10 hours ago
-
RE: 300 Liter Tank - Do I have to heat it all?
I agree with @morgan. You can turn down the target t...
By JamesPa , 12 hours ago
-
How to waste energy (and time) playing with AI.
A friend of mine who subscribes to an AI service was ex...
By Toodles , 1 day ago
-
RE: Heat Pump Books For Beginners – Bodge Buster & From Zero To Heat Pump Hero
@topher you’re more than welcome to, yes. I’ll send you...
By Mars , 2 days ago
-
RE: Fitting new shower valve ..........
I’ve never taken a chance when fiddling and changing ou...
By Mars , 2 days ago
-
You should contact the council and report the unsatisfa...
By JamesPa , 2 days ago
-
RE: Benefits of an extra horizontal loop for GSHP
I would deffo install an additional slinky run, especia...
By Transparent , 2 days ago
-
RE: Say hello and introduce yourself
@editor fab - thanks Mars, and keep up the great work o...
By normpang , 2 days ago
-
RE: Compressor and Evaporator Stratification
@trebor12345 So I think the 1st zigzag section shows so...
By ASHP-BOBBA , 3 days ago
-
RE: Is this just haze or something more?
@majordennisbloodnok I was giving a talk to primary sch...
By Toodles , 3 days ago
-
RE: Tesla Powerwall – More of a ‘Luxury’ Than an ROI Winner!
We had our Tesla Powerwall 3 (and Gateway) installed ea...
By Old_Scientist , 3 days ago
-
Indeed. With a battery its presumably the battery con...
By JamesPa , 4 days ago
-
RE: No-code, plug-and-play monitoring for your heat pump
To update an ESP device using ESPHome in Home Assistant...
By Grantmethestrength , 4 days ago