Combi boiler help/ expert advice required pls - Uddingston
Discussion
Hi all,
I'm a regular on the TV&S PH forum, and 400 miles from home at my inlaws in Scotland. After enjoying a brilliant sledging day, we came home to find the boiler had thrown an error code
I'm hoping someone on here is either a gas fitter, or just has some knowledge of what might be up with it. I'm pretty handy with fixing most things but just need some advice on what to check next.
Its a Potterton Promax Combi HE Plus, and installed 18 months ago
Error code is 133 - Interruption of Gas Supply or Flame Failure
We still have gas pressure in the house, as the cooker works as normal.
Water pressure is 1.5 Bar
Flue exit is clear
Water overflow from condensor is checked and clear (not frozen
)
Pump runs as normal
Fan runs as normal
Connections for spark ignition electrodes and flame sensing electrodes are checked ok
We have not checked for gas at the burner itself, nor purged the gas as I did not know how to do this.
There is good spark at the ignition electrode (after each reset it sparks for 3 attempts, for 5 seconds each time).
However the burner does not light, and then the error code comes up
We have electric heaters, so we (and the wee kids who have about 3 layers on in bed
)won't be cold tonight. If someone has an idea on what it could be, I will head out to get whatever parts are needed tomorrow- in the snow friendly Disco. Otherwise if someone is anywhere remotely local to Uddingston, we would really appreciate a quick call out in exchange for christmas cash
Many thanks in advance
Fraser
I'm a regular on the TV&S PH forum, and 400 miles from home at my inlaws in Scotland. After enjoying a brilliant sledging day, we came home to find the boiler had thrown an error code
I'm hoping someone on here is either a gas fitter, or just has some knowledge of what might be up with it. I'm pretty handy with fixing most things but just need some advice on what to check next.
Its a Potterton Promax Combi HE Plus, and installed 18 months ago
Error code is 133 - Interruption of Gas Supply or Flame Failure
We still have gas pressure in the house, as the cooker works as normal.
Water pressure is 1.5 Bar
Flue exit is clear
Water overflow from condensor is checked and clear (not frozen
)Pump runs as normal
Fan runs as normal
Connections for spark ignition electrodes and flame sensing electrodes are checked ok
We have not checked for gas at the burner itself, nor purged the gas as I did not know how to do this.
There is good spark at the ignition electrode (after each reset it sparks for 3 attempts, for 5 seconds each time).
However the burner does not light, and then the error code comes up
We have electric heaters, so we (and the wee kids who have about 3 layers on in bed
)won't be cold tonight. If someone has an idea on what it could be, I will head out to get whatever parts are needed tomorrow- in the snow friendly Disco. Otherwise if someone is anywhere remotely local to Uddingston, we would really appreciate a quick call out in exchange for christmas cash Many thanks in advance
Fraser
copy of manual here
http://www.bhl.co.uk/uploads/article1469/Potterton...
Fault finding guide at the end - worth a try
http://www.bhl.co.uk/uploads/article1469/Potterton...
Fault finding guide at the end - worth a try
Cheers Sploosh. We luckily had a copy left with us when they installed it, and have been working our way through it this evening. We are now at a dead end, as it states either replacing the PCB, or checking/replacing the Gas Valve and checking the CO2 levels. At the moment, I'm hoping to find a plumber/ CH engineer/ Gas fitter tomorrow
Well the excitement was short lived, and its cold again. Not surprising since Glasgow was -7 degrees outside overnight
It stopped again about 4am, and now won't reset.
After checking all the quick fixes, it seems like gas valve has gone and no gas is going into the combustion chamber.
It's heating engineer time I think. Anyone PH'ers know one please?
It stopped again about 4am, and now won't reset.
After checking all the quick fixes, it seems like gas valve has gone and no gas is going into the combustion chamber.
It's heating engineer time I think. Anyone PH'ers know one please?
No luck with most engineers calling back today, except for John Reid in Kirkintilloch 
He was brilliant, and really happy to help me out (a friend of a fellow PHer).
After 10 minutes with the multimeter checking voltages and resistance on key components, it turns out the PCB is stuffed (£116 + VAT), and the overheat stat is a bit dodgy too (£16 + VAT). Apparently they are a very cheap boiler, and prone to problems. I couldn't get a new PCB as they are out of stock at the 2 biggest plumbing merchants in Glasgow. British Gas are one of the only ones to fit the boiler model, as they are the cheapest available on the market. The good news is that they should have stock of the PCB on the van.
We have a BG engineer coming tomorrow for a one off cost guaranteed fix solution. Fingers crossed they have the parts.
He was brilliant, and really happy to help me out (a friend of a fellow PHer).After 10 minutes with the multimeter checking voltages and resistance on key components, it turns out the PCB is stuffed (£116 + VAT), and the overheat stat is a bit dodgy too (£16 + VAT). Apparently they are a very cheap boiler, and prone to problems. I couldn't get a new PCB as they are out of stock at the 2 biggest plumbing merchants in Glasgow. British Gas are one of the only ones to fit the boiler model, as they are the cheapest available on the market. The good news is that they should have stock of the PCB on the van.
We have a BG engineer coming tomorrow for a one off cost guaranteed fix solution. Fingers crossed they have the parts.
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