potterton promax he plus not always firing up

potsy32 · 14 Jul 2009

Hi

I have a Potterton Promax HE boiler

Recently i have had a problem where it is not firing up in line with the timer. Basically all the timing settings are correct. For example, set to come on at 5.30am and go off at 9.00am but it just does not fire up and i have to press the reset button for it to fire up.

This then works but it only stays on for about 1 hour and then just goes off. Then if i press the reset button again it fires up.

Has anybody got any ideas what the problem might be?

Any help would be greatly appreciated.

Thanks in advance.

allconfuzed · 14 Jul 2009

potsy32 said:
Hi

I have a Potterton Promax HE boiler

Recently i have had a problem where it is not firing up in line with the timer. Basically all the timing settings are correct. For example, set to come on at 5.30am and go off at 9.00am but it just does not fire up and i have to press the reset button for it to fire up.

This then works but it only stays on for about 1 hour and then just goes off. Then if i press the reset button again it fires up.

Has anybody got any ideas what the problem might be?

Any help would be greatly appreciated.

Thanks in advance.

if the case is warm its probably the inner combustion door seal, or a leak of products from the appliance knocking out the inner overheat,
do not repair yourself

Agile · 14 Jul 2009

Random lockouts are a common problem with this boiler although yours seems more consistant than some.

Its often a difficult task for an engineer to deal with because it could be one of several causes and they include the PCB and gas valve which are both expensive parts.

I usually suggest a fixed price repair by BG or the manufacturers as both can throw parts at it until they find the fault by trial and error rather than diagnostic deduction.

Tony

Deleted member 105431 · 14 Jul 2009

Agile said:
I usually suggest a fixed price repair by BG as they can throw parts at it until they find the fault by trial and error rather than diagnostic deduction.

Tony

That is british gas standard fault finding procedure; throw as many parts at it as you can. It's all most of em know.

potsy32 · 15 Jul 2009

Thanks for your reply's. I've got someone coming to have a look for me

nickso · 15 Jul 2009

dangermouse46 said:
Agile said:

I usually suggest a fixed price repair by BG as they can throw parts at it until they find the fault by trial and error rather than diagnostic deduction.

Tony

Click to expand...

That is british gas standard fault finding procedure; throw as many parts at it as you can. It's all most of em know.

pot, kettle.

nickso · 15 Jul 2009

Agile said:
Random lockouts are a common problem with this boiler although yours seems more consistant than some.

Its often a difficult task for an engineer to deal with because it could be one of several causes and they include the PCB and gas valve which are both expensive parts.

I usually suggest a fixed price repair by BG or the manufacturers as both can throw parts at it until they find the fault by trial and error rather than diagnostic deduction.

Tony

and what pray tell would your "diagnostic deduction" be in this case glazier?

Agile · 15 Jul 2009

In this case if its only once a day or less then there is no possibility of making any reasoned diagnosis.

All that can be done is to check the obvious and if that does not identify any faults to change the PCB and after that the gas valve.

I get the impression that BG and Potty usually change both the PCB and the gas valve as they are unfettered by component costs and want to ensure customer satisfaction and eliminate call backs.

As a working BG engineer what do you do?

Tony

nickso · 15 Jul 2009

Agile said:
In this case if its only once a day or less then there is no possibility of making any reasoned diagnosis.

ah. so what happened to your policy of not taking a guess?

All that can be done is to check the obvious and if that does not identify any faults to change the PCB and after that the gas valve.

I get the impression that BG and Potty usually change both the PCB and the gas valve as they are unfettered by component costs and want to ensure customer satisfaction and eliminate call backs.

you are dreaming again glazier. BG are going mental for parts cost, putting a pcb and a gas valve on the same job will certainly attract a phone call from a manager to "discuss" the reason.

As a working BG engineer what do you do?

if you are asking me to make a guess then i would plump for pcb if nothing else is obvious. back in the day when BG didnt demand that you close all jobs down, rather than leaving them open to phone and check that it was fixed, i would have gone back round and removed the pcb and tried something else had it not sorted it.

Agile · 15 Jul 2009

nickso said:
As a working BG engineer what do you do?

Click to expand...

if you are asking me to make a guess then i would plump for pcb if nothing else is obvious. back in the day when BG didnt demand that you close all jobs down, rather than leaving them open to phone and check that it was fixed, i would have gone back round and removed the pcb and tried something else had it not sorted it.

The only way to remove the likelyhood of not fixing the boiler is to replace both on the visit.

BG either need to accept the higher spares cost or accept some call backs will be inevitable.

Tony

nickso · 15 Jul 2009

Agile said:
nickso said:

As a working BG engineer what do you do?

Click to expand...

if you are asking me to make a guess then i would plump for pcb if nothing else is obvious. back in the day when BG didnt demand that you close all jobs down, rather than leaving them open to phone and check that it was fixed, i would have gone back round and removed the pcb and tried something else had it not sorted it.

Click to expand...

The only way to remove the likelyhood of not fixing the boiler is to replace both on the visit.

BG either need to accept the higher spares cost or accept some call backs will be inevitable.

Tony

recalls it is then. anything that doesnt impact on cost is what they are looking for. since banning all re-checks my recalls have gone up, yet this isnt something they will consider as a factor when moaning about my productivity. wlecome to the swings and roundabouts of BG employment.

diynot

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potterton promax he plus not always firing up

Deleted member 105431

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