H indicates the fridge is too warm.
First, check the fan in the freezer is running, you should be able to hear it.
If it's ok, unplug the appliance.
Inside the fridge, take off the panels on the rear wall.
You'll come across an air diffuser that allows air from the freezer to come into the fridge.
Check it's ok.
Let me know what you find.
It's the flap you are checking.
Is it open or closed?
If it's open, the fault is going to be a blockage in the ducting between the freezer and fridge or, a blocked evaporator in the freezer.
First, unplug the appliance.
Take the rear panels inside the freezer off to expose the evaporator.
if the evaporator is a solid block of ice, fully defrost and then reassemble to try the machine again.
If it's all clear, it's a blockage in the ducting.
To cure this, you have to carry out a full defrost of the appliance.
At least, 24 hours unplugged, doors open and in a warm room.
After this, close the doors, turn it on and it should cool down again.
Check it out, see what you find.
Hope this helps
Let me know how it goes
Don't chip it off, you'll burst it.
Use a steamer to defrost it quickly.
If this is the only problem, it should work again.
If the ducting is blocked, I'm afraid it's a 24 hour off job.
Let me know how you get on.
Already advised on this.
The ducting is blocked.
You need to do the full defrost.
The freezer is clear.
Fan is running.
The air diffuser in the fridge is open.
It can only be a blockage preventing air being blown through.
If you are unsure of any of the items you've responded to, such as the air diffuser being open, check again.
If it's open, you need to try a full defrost.
I'm sorry but this isn't making any sense.
Have you put all the panels back on?
If you have, and if the fan is running, the ducting is clear and the diffuser is open, you get cold air from the freezer into the fridge.
If you get no cold air, one of the 3 is to blame.
Fan, duct or diffuser.
Is the compressor running?
OK, that would account for the lack of ice in the freezer section and the cooling problem in the fridge.
Your freezer would have been defrosting at the start of this and now that it's defrosted and not running, nothing is cooling.
The most likely cause of the problem, given the new symptoms, would be the control board in the facia panel.
I am assuming the compressor is not hot and not clicking.
2 hours to start up is a long time.
Run it, see what happens.
See if the fridge cools too.
If it runs and cools, I wouldn't fill the freezer just yet.
See what happens over the next few days.
Good luck with it.
No problem, good luck with the appliance.