Ideal isar HE24 - repressurising does not work (picture)

[Oxford89]

Hello everyone!

First of all: My boiler made some high pitched sound in the last 2-3 days whenever I had hot water running but didn't really had the time to look at it this week. I came back home from work today, turned on my heating and the boiler stopped working.

If I turn the boiler off and on I get a status "0." and "4" which turns to "0" and three horizontal lines after 2 seconds.

I looked at the pressure gauge and saw that there is no pressure. I did some research and saw that I should turn the two blue taps and nothing happens - like - I don't hear anything nor see any added pressure.

I also bled my radiators and checked for wet spots around the boiler and the radiators but didn't see anything.

Am I turning the wrong taps?

Below a picute:

 

[picasso]

The taps to fill your system are where I have marked, you might need a screwdriver or small spanner as it looks like the tap handles are missing, it might also only have one tap on one side.

 

[dilalio]

The two caps that are hanging down on the plastic lanyards may have a tool on the other side that can be used to open and close the valve(s).