Vaillant arotherm plus heat pump frost protection
At those times on the 6/7th Frost protection kicked in. The two flow temperatures are the starting and ending for the frost protection period. The duration was around 15minutes. Yes showing frost protection on the controller.
I was expecting it to only kick in when the outside temperature reached 4oC and then elevate the flow from 6 to 12oC.
258-DHW; apologies 258 is the heat pump cycle number and DHW for heating the hot water.
When i moved the outdoor sensor indoors , the number of frost protection cycles reduced. The heating came on as per the programme.
Im sorry but I really don't understand from what you have said how you are running your heat pump (for example how can WC work when the outdoor sensor is indoors, and that being the case how did the heating 'come on' as per the programme'? ). Its also going to be difficult to work out things based on what happened over 2 months ago and with the outdoor sensor indoors.
Can I suggest you
1. relocate your outdoor sensor outdoors
2. take screenshots of the settings governing the heating schedule, room influence mode and weather compensation
3. when the problem next occurs record:
what the heat pump should have been doing according to the program you had set up and why you think this
the indoor and outdoor and flow temperatures on the sensocomfort
the time of day and date.
With a fresh example and more data on how you are running your heat pump maybe it will make sense, currently I am sorry but it doesn't, at least not to me.
I apologise I cant be more helpful at present however its difficult to tell what is going on with the various changes to configuration and the moving of the outdoor sensor, particularly as the latter is so absolutely fundamental to the control of the unit all of the time not just for frost protection.
4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.
Much appreciated for your help and thoughts. I will keep a diary. Thank you again
It occurs to me, have you got a timed heating schedule and if so what is it. Can you tell me why the indoor temperature was so low in the records in the diary. Something isn't making sense about the whole setup.
Just to emphasize, the outdoor sensor isn't primarily for frost protection, it's part of the basic weather compensation control loop of the system. It really has to be outside.
4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.
-
Vaillant AroTherm Plus 7kW
1 day ago
-
Vaillant - Downstairs radiators not getting warm
5 months ago
-
Vaillant aroTHERM plus not level or flat - what base is best under an external unit?
7 months ago
-
Vaillant Arotherm monobloc error f.788 - ASHP is not working!
7 months ago
-
British Gas versus Octopus: Two possible heat pump routes - how to evaluate them?
8 months ago
- 22 Forums
- 2,089 Topics
- 45.9 K Posts
- 26 Online
- 3,375 Members
Join Us!
Trusted Installers
Struggling to find a reliable heat pump installer? A poor installation can lead to inefficiencies and high running costs. We now connect homeowners with top-rated installers who deliver quality work and excellent service.
✅ Verified, trusted & experienced installers
✅ Nationwide coverage expanding
✅ Special offers available
Latest Posts
-
RE: RDSAP10 effect on existing heat pump EPC rating?
There is a real disconnect between how performance is ...
By Aaron , 7 hours ago
-
RE: Spain's blackout - El Apagón - the report is out
The first press reporting is out Here's a brief synopsi...
By Lucia , 7 hours ago
-
We’re proud to share that the Homeowners’ Q&A, the ...
By Mars , 8 hours ago
-
RE: Getting the best out of a heat pump - is Homely a possible answer?
@majordennisbloodnok thanks. The reason Planet appealed...
By benson , 9 hours ago
-
RE: My misgivings about installing ASHP and solar panels via the ECO4 scheme...
Some thoughts from me, having been through the ECO4 pro...
By Old_Scientist , 14 hours ago
-
RE: Commencing on an ASHP Installation Process
Yes, it's "doable" if everything goes to plan, they arr...
By Old_Scientist , 15 hours ago
-
RE: How not to install a heat pump
You are right. Thinking on this has evolved over the p...
By JamesPa , 1 day ago
-
RE: Vaillant AroTherm Plus 7kW
Thanks for the comprehensive write-up, I am considering...
By Scalextrix , 1 day ago
-
@ashp-bobba ‘Wattson, how many grammes of Co2 are you r...
By Toodles , 1 day ago
-
RE: DHW SET UP with Samsung gen 5
Thats good news indeed, you are very likely almost ther...
By JamesPa , 2 days ago
-
RE: Plate heat exchanger considerations
As far as I can tell my vented system would have a peak...
By Scalextrix , 2 days ago
-
RE: Air Changes per Hour - ACH and the MCS requirement
There have been a few discussions dotted around (e.g. I...
By Declan90 , 2 days ago
-
RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
Having made some enquiries locally I have found a compa...
By Morgan , 2 days ago
-
RE: I don't need any heating in the summer. How do I turn my Samsung heat pump off?
Thats great Someone else is struggling with this in a...
By JamesPa , 2 days ago
-
@bart Best of luck moving forward, I look forward to he...
By ASHP-BOBBA , 3 days ago
-
RE: Ecodan EMP2 kit - is it any good?
Please note: heat meter accuracy at 95+% is as long as ...
By ASHP-BOBBA , 3 days ago