What is a Heatslave tank?

The Heatslave tank will maintain the temperature set on the. Domestic Hot Water Control Thermostat. Demand by the. Domestic Hot Water Control Thermostat or a demand for hot. water at a tap or shower will override the central heating.

Where is the reset button on a Worcester Heatslave 20 25?

The burner can be reset after two minutes by pressing the illuminated lockout reset button located on the burner control box. PLEASE NOTE: Do not attempt to repeatedly restart the boiler as persistent lockout indicates a fault and you should consult a service engineer.

What does 9F mean on Worcester boiler?

burner lockout condition
Fault codes 9F and 855 ▶ This is a burner lockout condition, press the. Reset button to restart the burner. ▶ If the burner fails to fire and fault 9F 855 is. displayed again, check the oil supply to the. boiler.

Where is the reset button on a Worcester Greenstar Heatslave 18 25?

H Reset button – flue thermostat (behind front panel). J Reset button – boiler (behind front panel).

How do I reset my Worcester boiler?

Tell Me How to Reset a Worcester Boiler When you need to reset your boiler, simply press and hold the reset button that can be found on the front of your boiler control panel. You need to hold the button down for 3-5 seconds to ensure that it is reset before re-checking the system to make sure it is working.

What does A21 mean on a Worcester thermostat?

What Does the Worcester Error Code A21 Mean? If you get the A21 error code, then this is telling you that there is no RF signal between your boiler and your thermostat, meaning that they are unable to communicate and provide heat to your property.

What does A21 fault mean on Worcester boiler?

The A21 code appears when something has interrupted the signal between the room thermostat and receiver, which in turn stops the boiler from knowing when to turn on.

What causes a boiler to lockout?

Boilers can lock out due to various problems, such as low/high water pressure, lack of, or no fuel supply (gas, LPG or oil), a blockage in the system, or the lack of power to electronic components.

Do you need to Repressurise a boiler after bleeding radiators?

Once you’ve bled the radiators, check the pressure gauge on your boiler. If the pressure is too low you’ll need to repressurise the boiler. If the system pressure is adequate, you can switch your heating on and check your radiators again to ensure that there are no remaining cold spots on the panels.

What temperature should my Worcester boiler be set at?

During the winter, the ideal temperature setting should be 18-21 degrees. In areas that get extremely cold, then 21-23 degrees would be sufficient. If you have taken additional measures to retain heat such as wall insulation or draught-proofed windows and doors, then you could set your thermostat to 17 degrees.

How does a Worcester boiler timer work?

The Worcester Bosch timer is a user-friendly analogue timer for setting heating time periods. With the ‘teeth’ on the dial pressed down the heat comes on and when left up the heat remains off. This allows you to set your central heating on and off if your room reaches the ideal temperature.

What does A21 fault mean?

What does A21 mean on a boiler?

If you get the A21 error code, then this is telling you that there is no RF signal between your boiler and your thermostat, meaning that they are unable to communicate and provide heat to your property.