Potterton HE Store - Can't repressurise - Valve stuck?

[Ben Thurgood]

Hello, I have a Potterton Promax HE Store boiler, and in the past a few times I have had to repressurise the system after getting an E119 error. Usually I take off the bottom cover and turn one valve, hear the water coming in, and watch the pressure increase. However I've got the error today after several months of not seeing it, and now when I turn the valve I can't hear any water coming through and the pressure doesn't change.

I have seen a few videos that suggest there are two valves that need opening. There is another valve on the hose but I have never touched this before. I tried turning it today but it won't budge (it is the black valve on the right in the picture below, I usually just turn the one black valve on the left). It looks like it's turned diagonally, as if it has always been half open?

Any advice on what I should do here? I assume as I can't hear the water coming through, this is just an issue with one of the valves being stuck, but wasn't sure how to get that right-hand valve turning or if I could remove it without flooding my flat?

Thanks

 

[SimonG]

Take the screw out of the black handle and use a spanner. The plastic could have rounded off.

 

[steadyon]

1. I suspect the valve you never turn (with the white plastic spout attached to the front of it) is a drain off valve. If so, don't touch.
2. As SimonG suggests, remove plastic handle from your "normal" valve, and turn with a spanner / grips / pliers.