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Why is my boiler giving me hot water but no heating?

Why is my boiler giving me hot water but no heating?

If you’ve got hot water, but no central heating then there are more issues it could be if it’s not the thermostat or the boiler pressure. Common reasons for this particular fault are broken diaphragms and airlocks, or a motorised valve failing.

How do I reset my Worcester Greenstar 30si?

In most cases, you will simply need to hold the button marked ‘reset’ for three seconds. In some models you may see a reset light at the end of the temperature dial. In this case, just turn the dial down to the reset light, leave it there for three seconds and then turn it back to its original position.

Can you use a boiler without a thermostat?

This is not a control but a system of wiring that turns the boiler off when neither the room thermostat nor the cylinder thermostat needs it. Without this, the boiler can continue to ‘cycle’ and waste energy.

Why won’t central heating come on?

Check the Pilot Light – A dirty or faulty pilot light is one of the main reasons a gas furnace won’t start. Make Sure Natural Gas Is Flowing into the Furnace – If your furnace won’t start, it may be because the unit isn’t getting any fuel. Simply check the gas control valve to ensure it’s in the “On” position.

Do you need an air vent with a combi boiler?

Although the boiler cupboard may not require any form of air vents or additional ventilation, the boiler requires oxygen in order to burn the gas correctly. The flue is the pipe that allows the waste gases produced by your boiler to be released from your home.

Why is my Worcester boiler making a gurgling noise?

Gurgling noises- if your boiler is making gurgling noises, there could be a blockage, or a build up of sediment at the bottom of the boiler. You may also have a frozen condensate pipe, and this pipe will need to be thawed.

What does the reset button do on a Worcester boiler?

Worcester Greenstar Ri Boiler Reset When the boiler resets the mains indicator will no longer be flashing and the boiler will function normally, dependant on the programmer and room thermostat settings. A reset fault condition will exist If the electrical power to the boiler has been interrupted.

What do I need to know about my Greenstar I boiler?

Ensure that there are no leaks to any underfloor pipework. Check that there is no water being discharged from the pressure relief valve (sometimes referred to as an overflow). This pipe usually goes from the boiler through to an outside wall and terminates outside. Check this for signs of dripping.

What is the GC number for a Worcester Greenstar gas boiler?

THE APPLIANCE IS FOR USE WITH NATURAL GAS OR L.P.G. (Cat II 2H3P TYPE C13, C33 & C53) NATURAL GAS: 25Si GC NUMBER 47-311-84 30Si GC NUMBER 47-311-85 LIQUID PETROLEUM GAS: 25Si GC NUMBER 47-311-88 30Si GC NUMBER 47-311-89 INSTALLATION & SERVICING INSTRUCTIONS INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR 25Si/30Si

Where is the overflow valve on a GreenStar I boiler?

Check that there is no water being discharged from the pressure relief valve (sometimes referred to as an overflow). This pipe usually goes from the boiler through to an outside wall and terminates outside.

What should my Greenstar I water pressure be?

Greenstar i Troubleshooting If you have a combi or system boiler, which are both sealed systems, there is likely to be a water pressure gauge on the front. This should be at a setting of around 1 bar whilst the heating is off. When the boiler is operating, the gauge will usually rise to 1.5 bar or more.