Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws

View the thread, titled "combi Worcester greenstar heatslave 12/18 switching off" which is posted in UK Plumbers Forums on UK Plumbers Forums.

B

bear3964

I wonder if anyone can help me, thank you for reading.

I have a 7 year old internal combi Worcester greenstar heatslave 12/18

Its has a built programmer and Hot water temperature control and Central heating temperature control dial both marked from 1 to 6.

The minimum and maximum ranges of the heating control positions are approximately 55°C to 80°C.



Pressure bar is 1.0 and its a sealed system.

Increased and decreased thermostatic radiator valve settings on rads.


The combi is connected to 6 radiators with a 15mm pipe work, all the rads have been bled.

There is no separate controller for the timer or thermostat as they work from the front of the boiler).

The lock out light is off, and there is plenty of oil.

The Problem:
The boiler only functions for a a few minutes at a time on the central heating side.

Hot Water:

When you switch on the boiler for the hot water you can hear the boiler igniting and working,
But the hot water only comes on at the high setting of the heating temperature control dial marked 4 out of 6, it used to come on at setting 2, the water is nice and hot. But the setting is far too high.

Central Heating:

When you switch on the central heating dial controller, nothing happens until you set the dial to 5 out of 6.
The boiler again ignites and sounds like its working, but after 3-4 minutes the boiler makes a clicking like sound like the thermostat has reached its set temperature and then switches itself off.

The boiler used to operate from the setting dial marked 2 out of 6 and now on setting 6 the highest level the central heating doesn’t come on for very long. As it seems to have reached its setting.

And the boiler is very hot.

When I called the manufacturer they told me that there is no built in thermostat on this boiler.
Not really sure what they mean by this.

There is only one reset button for the ignition but none for any other thermostat or controller.
I have turned the boiler off and left it over night and it still goes back to the same problem, its getting too hot and it seems like the temp has been set too high, regardless off the setting of the temp controllers.

Also one last thing, the Optional programmer built into the boiler had a test feature- will this help me remendy this problem.

I appreciate your time thank you.
 
That sounds like the circulating pump or the diverter valve has failed - (BTW there are over heat resets on the underside of the control panel) - do the radiators heat up?
 

Official Sponsors of Plumbers Talk

Reply to the thread, titled "combi Worcester greenstar heatslave 12/18 switching off" which is posted in UK Plumbers Forums on Plumbers Forums.

We recommend City Plumbing Supplies, BES, and Plumbing Superstore for all plumbing supplies.

Thread Information

Title
combi Worcester greenstar heatslave 12/18 switching off
Prefix
N/A
Forum
UK Plumbers Forums
Start date
Last reply date
Replies
2

Thread statistics

Created
bear3964,
Last reply from
SimonG,
Replies
2
Views
4,072

Weekly or Monthly Email Digest

Back
Top