Air source heat pump heating issue

marconi · Oct 6, 2019

Are you able to post a photo of the innards of the JB I mentioned?

Themorganator4 · Oct 6, 2019

marconi said:
Are you able to post a photo of the innards of the JB I mentioned?

Ah sorry I forgot, it's a bit of a mess (not my making!) I tried to take as many detailed pics as I could but some wires are short and a bit tangled

[ElectriciansForums.net] Air source heat pump heating issue

marconi · Oct 6, 2019

In #53 could you clarify please into which terminals the set of 3 white wires are connected which are to the right of the second earth terminal numbered 7.

Themorganator4 · Oct 6, 2019

marconi said:
In #53 could you clarify please into which terminals the set of 3 white wires are connected which are to the right of the second earth terminal numbered 7.

They are connected to 13, 14 and 15

marconi · Oct 6, 2019

Themorganator4 said:
Ah sorry I forgot, it's a bit of a mess (not my making!) I tried to take as many detailed pics as I could but some wires are short and a bit tangled

View attachment 52898 View attachment 52899 View attachment 52900 View attachment 52901 View attachment 52902

That shows VERY poor workmanship. I am currently in the home straight of recovery from diarrhea which is why your problem has been such a welcome distraction! It is such a mess - your wiring, I am minded to travel down to you and investigate with you rather than remotely. I me no insult to you, but I have probably gone beyond the limit of 'step-by-step- with you through the EF. So would you like me to visit once I am recovered? Chichester is where you live? I am not far from the Dartford Crossing. I have started so would like to finish. No insult to me if you want it fixed sooner by someone esle. Would you just pay my diesel there and back?

Remember to put the covers all back on again and reset knobs and dials and switches.

Themorganator4 · Oct 6, 2019

marconi said:
That shows VERY poor workmanship. I am currently in the home straight of recovery from diarrhea which is why your problem has been such a welcome distraction! It is such a mess - your wiring, I am minded to travel down to you and investigate with you rather than remotely. I me no insult to you, but I have probably gone beyond the limit of 'step-by-step- with you through the EF. So would you like me to visit once I am recovered? Chichester is where you live? I am not far from the Dartford Crossing. I have started so would like to finish. No insult to me if you want it fixed sooner by someone esle. Would you just pay my diesel there and back?

Remember to put the covers all back on again and reset knobs and dials and switches.

Yes I thought that when I took it off the first time! By all means, how much would you want? I live in bognor regis, about 7 miles east of Chichester

marconi · Oct 6, 2019

It's about 200 miles there and back. That is a third of a tank of my Galaxy which costs about £90 to fill up. £30? Please PM me.

Themorganator4 · Oct 6, 2019

marconi said:
It's about 200 miles there and back. That is a third of a tank of my Galaxy which costs about £90 to fill up. £30?

That sounds good, if you are sure? I work full time but I am around weekends so when are you able to come down?

marconi · Oct 6, 2019

Studying the smart start controller for the ASHP compressor I have now discovered there is a 3 minutes delay after power up before the controller will respond to a start demand. What this means is that the test we undertook may well not have been conclusive because we should have waited for 3 minutes to elapse before observing whether the compressor is going to start or not.

There is also a delay of 3 minutes after the end of start demand. And a 5 minutes delay if after a start attempt the compressor does not start promptly.

Alas, this means I think the test will have to be repeated and allowing 3 minutes at least to elapse. Are you up for that? Obviously at your convenience. And in the order I presented them this morning.

Comfort yourself that we are probably making quicker progress on your problem than towards BREXIT.

Regards

MArconi

Themorganator4 · Oct 6, 2019

marconi said:
Studying the smart start controller for the ASHP compressor I have now discovered there is a 3 minutes delay after power up before the compressor will respond to a start demand. What this means is that the test we undertook may well not have been conclusive because we should have waited for 3 minutes to elapse before observing whether the compressor is going to start or not.

There is also a delay of 3 minutes after the end of start demand. And a 5 minutes delay if after a start attempt the motor does not start promptly.

Alas, this means I think the test will have to be repeated and allowing 3 minutes at least to elapse. Are you up for that? Obviously at your convenience. And in the order I presented them this morning.

Comfort yourself that we are probably making quicker progress on your problem than towards BREXIT.

Regards

MArconi

Of course, so perform the tests again but wait 3 mins?

Even if we hadn't started we would be closer to solving the problem than brexit...

marconi · Oct 6, 2019

Yes, that's right wait over 3 minutes - say 6 minutes each time. Tedious I know but it is protection electronics preserving the life of the motor-compressor in the event of a brief power outage. The most stressful time is when it starts - electrically and mechanically speaking.

Themorganator4 · Oct 6, 2019

marconi said:
Yes, that's right wait over 3 minutes - say 6 minutes each time. Tedious I know but it is protection electronics preserving the life of the motor-compressor in the event of a brief power outage. The most stressful time is when it starts - electrically and mechanically speaking.

Ok I'll do that shortly and post back the results
[automerge]1570376455[/automerge]
Interesting, it seems that the water pump now doesn't work, I'll have a fiddle in the junction box to make sure everything is connected

marconi · Oct 6, 2019

It is best to isolate and then slowly, slowly move connectors and wires to discover the fault(s) and not create any new ones in the process. I already have a volunteer to sort out that JB for you.

Themorganator4 · Oct 6, 2019

marconi said:
It is best to isolate and then slowly, slowly move connectors and wires to discover the fault(s) and not create any new ones in the process. I already have a volunteer to sort out that JB for you.

By chance whilst I was moving connectors around, another wire slipped out with ease. I assumed that the connection wouldn't be that loose unless another wire was connected there. I was right.

Just waiting to complete test 1 of 2 now
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Ok both tests failed as before. On test 2 just to double check, i am removing the white wire from the bottom not the red and white striped one at the top

marconi · Oct 6, 2019

yes that was right. Ho hum. Let us call it a day. I will PM you about a possible visit next weekend with a fellow EF member. Remember to put covers and screws back.....

Good night to you.

Air source heat pump heating issue

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