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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Problem with Potterton Promax 15 HE boiler. Ignition lockout
Boiler now seems to lock out but only after is has reached it operating
set-point. That is it doesn't lock out if either of the thermostats (cylinder and room) switch it off first. The CORGI registered installer/maintainer (it's four years old) has now replaced the igniter and sensor and both the main control PCB and the Ignition PCB have been swapped out and so we are pretty sure it is none of those. I'm wondering if the safety cut-out is operating before the setpoint is reached.. Perhaps we should start measuring the temperatures. I guess by closing down all the TRVs we could speed the process up a bit. He's loath to hang around all day. Or could the control thermister not be functioning in and allowing the boiler to overheat. It's currently set to operate at the factory set point of 82 degrees. If anyone else has had this problem with this boiler I'd like to hear their solution or suggestions.. Michael |
#2
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Problem with Potterton Promax 15 HE boiler. Ignition lockout
"Michael Shergold" wrote in message
... Boiler now seems to lock out but only after is has reached it operating set-point. That is it doesn't lock out if either of the thermostats (cylinder and room) switch it off first. The CORGI registered installer/maintainer (it's four years old) has now replaced the igniter and sensor and both the main control PCB and the Ignition PCB have been swapped out and so we are pretty sure it is none of those. I'm wondering if the safety cut-out is operating before the setpoint is reached.. Perhaps we should start measuring the temperatures. I guess by closing down all the TRVs we could speed the process up a bit. He's loath to hang around all day. Or could the control thermister not be functioning in and allowing the boiler to overheat. It's currently set to operate at the factory set point of 82 degrees. If anyone else has had this problem with this boiler I'd like to hear their solution or suggestions.. Michael Follow-up: In case anyone has similar problems A second person was also experiencing exactly the same symptoms and over a week ago we conducted various tests and experiments measuring maximum temperatures and checking thermister values etc.. This duplication encouraged my Corgi man to phone Pottertons and at their suggestion on Nov5th evening he came and inspected the combustion chamber door seal and found it to be leaking. Coincidentally the other person had also decided to take off his combustion chamber door and found that there were large gaps in the sealing strip. Both Boilers have now been re-sealed and are back in test mode. It is all looking promising as we have at last found something promising. Curiously my Promax locked out again twice during next two days day but not after a long heating spells as before. It has now remained lockout free for the last week now, so the jury must still be out on whether we have eventually determined the ultimate fix to this boiler. There are still significant questions though: How did both CORGI engineers miss this during the annual service or at the very least not investigate this when called back to investigate the problem?. (no doubt the seals was damaged before or during the service. Both boilers had been working faultlessly until the annual service. ) The Potterton service manual supplied with this boiler is pretty poor, (decision blocks with no real decision)! The combustion chamber seals come low down the list after changing almost everything else. Do boiler manufacturers like Potterton not have any further contact with installer/maintainers or customers? The spares supplier said that these door seals were often ordered! I've written 'Check firebox door seals' in large letters for the engineer next time. Michael |
#3
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Problem with Potterton Promax 15 HE boiler. Ignition lockout
On Tue, 13 Nov 2007 14:13:21 -0000 someone who may be "Michael
Shergold" wrote this:- How did both CORGI engineers miss this during the annual service or at the very least not investigate this when called back to investigate the problem?. (no doubt the seals was damaged before or during the service. Both boilers had been working faultlessly until the annual service. ) You are assuming that the CORGI con has anything to do with quality and workmanship. It doesn't. I have met some excellent workmen who are registered with this organisation. However, when I tried to get an incompetent struck off the words of CORGI over the phone, almost word for word, were, "we are not interested in the technical competence of someone's work, only in whether they have paid their fees." -- David Hansen, Edinburgh I will *always* explain revoked encryption keys, unless RIP prevents me http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54 |
#4
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Problem with Potterton Promax 15 HE boiler. Ignition lockout
You are assuming that the CORGI con has anything to do with quality and workmanship. It doesn't. David Hansen, Edinburgh I will *always* explain revoked encryption keys, unless RIP prevents me http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54 From the trustcorgi.com website "Consequently, the CORGI badge is now a guarantee of quality, making it the standard to look for when employing a tradesman. We can help you find an installer in your local area who is qualified to work in your home - use our find an installer tool." Michael |
#5
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Problem with Potterton Promax 15 HE boiler. Ignition lockout
On Tue, 13 Nov 2007 14:50:45 -0000 someone who may be "Michael
Shergold" wrote this:- From the trustcorgi.com website I certainly wouldn't trust them with anything. I have seen some of their members in action. -- David Hansen, Edinburgh I will *always* explain revoked encryption keys, unless RIP prevents me http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54 |
#6
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Problem with Potterton Promax 15 HE boiler. Ignition lockout
"Owain" wrote in message
... Michael Shergold wrote: You are assuming that the CORGI con has anything to do with quality and workmanship. It doesn't. From the trustcorgi.com website "Consequently, the CORGI badge is now a guarantee of quality, It doesn't say whether it's good quality or bad quality (and suggests that it hasn't always been a guarantee of quality, I wonder how far back they are referring to) making it the standard to look for when employing a tradesman. That's like saying pustules are something to look for on a whore. They are, but you'd want to run away fast if you find them. We can help you find an installer in your local area who is qualified to work in your home Qualified = has obtained a qualification. Does not necessarily mean (a) competent (b) reliable (c) honest (d) a good businessperson Owain Thanks for the commiserations/suggestions etc. In fact in both our cases it is slightly embarrassing as in my colleague's case the Corgi man is a family friend and in my case the plumbing/heating company is part of a family dynasty. Originally three brothers running individual but collaborating carpenter-builders/electricians/plumbers companies respectively, who have served us well over the thirty odd years that we have lived here. The current Corgi man and his cousin, recently took over the company from their fathers (now retired), and both were a school with my sons so they were a fairly natural first choice to install my new boiler four years ago and has serviced it each year since. I have often recommended them to neighbours and friends, though they are not the cheapest tradesmen around. I will be more cautious in future and may well think again the next time I need a service/repair. In fact I seem to have learned so much about this boiler now I might well service it myself!! How do you find an enthusiastic competent tradesman? Michael |
#7
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Problem with Potterton Promax 15 HE boiler. Ignition lockout
In message , David Hansen
writes On Tue, 13 Nov 2007 14:50:45 -0000 someone who may be "Michael Shergold" wrote this:- From the trustcorgi.com website I certainly wouldn't trust them with anything. I have seen some of their members in action. Ha, rant time then... Yesterday CORGI "I'm not sure whether it's the gas valve or the PCB" Me "Have you checked whether you have mains to the gas valve" CORGI "No, it's at the back and difficult to get at" There were actually a couple of other goodies last week, but some ice cream has just arrived ... -- geoff |
#8
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Problem with Potterton Promax 15 HE boiler. Ignition lockout
In message , Owain
writes Michael Shergold wrote: You are assuming that the CORGI con has anything to do with quality and workmanship. It doesn't. From the trustcorgi.com website "Consequently, the CORGI badge is now a guarantee of quality, It doesn't say whether it's good quality or bad quality (and suggests that it hasn't always been a guarantee of quality, I wonder how far back they are referring to) making it the standard to look for when employing a tradesman. That's like saying pustules are something to look for on a whore. They are, but you'd want to run away fast if you find them. We can help you find an installer in your local area who is qualified to work in your home Qualified = has obtained a qualification. Does not necessarily mean (a) competent in which case it's illegal for him to work on a gas appliance, even his own -- geoff |
#9
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Problem with Potterton Promax 15 HE boiler. Ignition lockout
In message , Michael Shergold
writes In fact in both our cases it is slightly embarrassing as in my colleague's case the Corgi man is a family friend and in my case the plumbing/heating company is part of a family dynasty. Ah - mixing business with friends / relatives, always a bad move I will be more cautious in future and may well think again the next time I need a service/repair. In fact I seem to have learned so much about this boiler now I might well service it myself!! How do you find an enthusiastic competent tradesman? You DIY instead -- geoff |
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