greenstar

Hi, I’m trying to locate the filling loop on my combi boiler. There isn’t much info in the manual, just your installer will inform you where to find the filling loop which they didn’t. Any advice would be appreciated, I’ve attached some photos.

I need a little help if possible as I am trying to check that my current system is running efficiently but not really sure how to check, sorry if this is a long one and I have tried to contact a Honeywell connected specialist but they dont seem interested unless installing a new system and the...

Heating works and hot water- sometimes, but I noticed when I turn the hot tap on the pressure gauge drops to zero. I've not seen this before. Topping up the pressure doesn't seem to make a difference. As soon as the heating only is on pressure goes back up to 1.5bar. The thing is the flat is...

Dear All, I hope you might be able to point me in the right direction with an issue I have with a 3 year old Greenstar 30i boiler, last serviced in Oct ‘22, with new pipe work all around the house at time of boiler install. We have separate circuits upstairs and down and a water cylinder. At...

Hi, I have just noticed a damp patch around where my boiler flue exits through to outside wall along with a rusty colour around the collar of the flue bend. I’ve checked the external wall & there’s no water coming in from outside but the flue terminal also has a rusty colour. My regular boiler...

We have an outdoor Worcester Bosch Greenstar 25/32 Oil Fired Combi. We are getting a random lockout fault, code 855 9F. Pushing reset sorts it for a while sometimes an hour sometimes 4 hours. I can't get hold of the engineer that installed it. Is there anything I could try until he responds...

I've got a Greenstar 8000 going through a low loss header feeding 3 circuits, two trad rads and one UFH. Will it increase efficiency by instaling a temp sensor on the header and setting the boiler settings accordingly?

Hi all, 12 year old boiler, regularly serviced working fine, then wife turned on hot water and it stopped working. Same then with CH. Left it for a while worked and then stopped again. I looked at it when got home and when run water boilersstarts up, temp rises and then it cuts out. Same with...

Hoping someone can give me advice with this one. At an annual gas service today I found a Worcester Greenstar Junior 28i to be using only running at around 12kW on high when carrying out the gas rate. The CO readings were where they should be, fan speed was okay and inlet working pressure was...

Hi, I am handy DIYer but not interested in touching anything boiler related! Just interested before I get a Gas safe engineer out what I could be looking at for what the problem is and rough cost. So in a nutshell, I put a radiator on in a room in the extension, noticed after that the pressure...

We are experiencing an issue with CH short cycling on a Worcester Bosch Greenstar 25i ErP boiler. From a cold start the boiler fires for only ~25 seconds before exceeding the set CH flow temperature and entering it's 3 minute short cycle programme. As soon as the short cycle programme kicks in...

Hi everyone! Would greatly appreciate advice. I am visiting my elderly parents to find that their boiler is on the blink. As per the attached photo, the small box to the right of the boiler unit has a flashing green light (located at the top). The boiler switches on but then randomly switches...

Hey folks! I have been trying to get my heating up and running properly but I have had some trouble. I bought a new house this year and I have only just got to the point where I'd like to use the heating a bit. The house has two honeywell thermostats (Picture attached) one upstairs one...

Hi, I have a worcester greenstar 30 CDi Classic regular. The central heating is working fine but the water is not heating. If i put the system off for about 10 mins and start it up again it still does not heat the water. I am not getting an error code. Where do I start? thanks teslacar (BTW...

I have a 16 year-old Worcester Bosch Greenstar 35 CDi combi boiler, which is recently suffering from intermittent issues with the hot water. I usually get the shout from a family member who’s in the shower and found there’s no hot water. If I’m near the boiler when this happens, I can see the...

Hi, I have some knowledge of plumbing and heating and have installed several in my time. I have a new Worcester Bosch Greenstar 40CDi Classic Regular Gas Boiler (Gravity Fed System) new boiler and it was installed by a British Gas engineer recently, as I wanted a Gas Safe certificate with this...

Hi all, Recently moved into a new house and noticed the Greenstar boiler has low pressure on the dial. Quick Google suggests using a key, valves, or fill loop to increase the pressure. Only problem being is I don't have either of those things. Any help would be appreciated. Cheers.

Good afternoon. Our Greenstar i combi boiler works fine for heating but I am trying to find out why the boiler doesn't fire when I call for hot water. The fan seems to go but no blue light or firing up. Checked the pressure, all OK. The radiator underneath the boiler had a lot of air yesterday...

Condensing boiler installed by local Gas Safe plumber in 2014, not combi. Failed a couple of weeks ago with flashing blue light which googling suggests means no gas, blocked flue or blocked condensate pipe. There is gas, the flue is clear, and the condensate pipe goes into the under-sink waste...

Hi Everyone, hopeing someone can help We have a Greenstar Ri Boiler and its lost pressure, pressure gauge on top of the boiler reads 0.6 bar and i know this should be around 1.5bar, there is no external filling loop near the boiler or in the hotpress, there is a pipe in the hotpress with a red...