I have a Powermax 155 Sealed System with a fitted pump. From time to time, I needed to adjust the water pressure up to 1bar otherwise there would not be enough water pressure to ignite the system. After the adjustment, I'd switch the system off and then back on again and the orange light would come on followed by the sound of ignition and the green light would come on. This usually worked and water would be hot and the central heating on. The last time I did that, it failed to ignite. Only the orange light came on and the fan ran for about 30 seconds before it went dead. In the instruction manual, it says if the fan runs then check if the spark electrode sparks. In this case, I guess it did not. The instruction manual goes on saying to ensure that the H.T. lead is properly connected at ignition controller and at the electrode. I guess the H.T. lead has something to do with the wiring but I wouldn't dare touch any wiring. In fact, I don't even know if the problem is with the wiring. I paid £600 to get it fixed less than a year ago and I can't afford another big repair bill. Please help.
Plumbing Powermax 155
- Thread starter wade
- Start date
What repair was carried out for £600? It sounds way over the top unless you had some major component failures.
You shouldn't have to keep topping up the pressure. doing so over a long period of time would have harmed system/boiler. Pressure loss may indicate leak or expansion vessel problem.
Ignition problem may be relatively cheap to fix (well, anything's relatively cheap compared to £600!) - but it doesn't sound as if you should tackle it.
You shouldn't have to keep topping up the pressure. doing so over a long period of time would have harmed system/boiler. Pressure loss may indicate leak or expansion vessel problem.
Ignition problem may be relatively cheap to fix (well, anything's relatively cheap compared to £600!) - but it doesn't sound as if you should tackle it.
you probably have a leak from the prv from the last repair, if they drained down through their.........what did they do for 600 quid, phone heateam www.heateam.co.uk threre the service devision for potterton baxi valor wonderfire and powermax, they charge a flat rate fix fee.......
Two points, if this unit is not serviced regularly the ignition can be a little delicate and it may not always ignite first time.
Secondly, if yours is not igniting at all then it might be the ignition electrode, ignition cable or the spark generator circuit on the PCB.
So you have two separate problems, loss of water pressure and no ignition. You can look for water leaks at rad valves and on the pressure relief vent which should go through the wall to the outside behind the boiler but it could always be internal inside the boiler.
Tony Glazier
Secondly, if yours is not igniting at all then it might be the ignition electrode, ignition cable or the spark generator circuit on the PCB.
So you have two separate problems, loss of water pressure and no ignition. You can look for water leaks at rad valves and on the pressure relief vent which should go through the wall to the outside behind the boiler but it could always be internal inside the boiler.
Tony Glazier
DIYnot Local
Staff member
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