Greenstar Comfort I RF Wireless Thermostat 7733600001

Product Information

The boiler could be located in an unusual place such as your garage, attic, or basement. It is possible that the receiver is too far away from the thermostat.

When installed by a Worcester Bosch Accredited Installer with a Greenstar System Filter. The Greenstar 1000 and Greenstar 2000 guarantee is available as standard to both Excelerate members and non-WAI's, when fitted with any brand of system filter. Terms and conditions apply.

This unit is usually located near the boiler unit. It relays the signal to the boiler. The boiler will turn on heating when the room temperature is reached. Once the temperature is recorded, the thermostat sends an alarm to its receiver partner (also known as a receiver).

Turn the knob to select ON or OFF, if ON is selected the Programmer will automatically adjust the time in conjunction with (DST) Daylight Saving TimeRead more about central heating thermostats here How do I fix the Worcester A21 error? Thermostat Needs New Batteries Engineers might be able to move the receiver to a better spot so that your central heating works better. You might be able to move the thermostat without moving it so that it is possible to move the thermostat closer or ensure that it is not used during heating. When to Call an Engineer

Based on installing a new A-rated condensing boiler in England, Scotland and Wales with a programmer, room thermostat and thermostatic radiator controls (TRVs) in a gas heated detached home from an older G-rated boiler with a programmer and room thermostat. Figures are based on fuel prices as of October2023. Savings will vary depending on the size and thermal performance of your home. Source: Energy Saving Trust.The A21 code will be displayed if there is an RF interruption between receiver and room thermostat. This prevents the boiler from knowing when to turn on. Before the introduction of A21 codes, your display might have displayed a low battery symbol. This means you have 60 days before your thermostat stops working. A room thermostat controls the heating in your home. If the room's temperature drops below your chosen temperature, the thermostat will switch on. Once the room has reached the chosen temperature, the thermostat will turn the heating off, preventing overheating and reducing energy consumption. This can help reduce your home's energy consumption. This guide will explain what to do, how to fix your Worcester Bosch boiler controls and when to call an expert to complete further repairs. Worcester boiler A21 error code wireless thermostat issues The A21 error code can be removed from your thermostat’s screen easily by resetting it using the reset button. Alternate models have a central heating temperature knob that can be used to reset the boiler. There are many steps you can take before calling an engineer to repair or diagnose the thermostat.