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Optimisation
5
Optimisation
Your Thermostat has optimisation functions that aim to save energy while maintaining
suitable comfort levels. The Thermostat displays
default optimisation is disabled, see instructions on installation guide on how to activate it.
• Optimum Start learns how long it takes your home to reach a set temperature and then
turns the heating on a bit earlier to achieve that temperature at the programmed time.
• Delayed Start saves energy by slightly delaying the start of heating depending
on the difference between the set temperature and the room temperature.
The closer these temperatures are the longer it will delay the start.
• Optimum Stop saves energy by switching off a little bit earlier than the
programmed time. If your home is up to temperature, you will not notice the
effect on the temperature, but you should see a difference in your fuel bill.
during the optimisation period if set. By
15
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Do you have a question about the T3 and is the answer not in the manual?
Questions and answers
The alert triangle only is flashing on our new T3R wireless programmable thermostat. Why?
The alert triangle is flashing on the Honeywell T3R wireless programmable thermostat because the thermostat has likely lost its wireless connection (binding) with the receiver unit. This can be identified by a red flashing light on the receiver unit and either no wireless symbol on the thermostat display or a flashing wireless symbol with the warning triangle. Re-binding the thermostat and receiver unit is required to restore the connection.
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I’ve changed batteries but no display showing
If there is no display on your Honeywell T3 thermostat after changing the batteries, ensure that you have used 2 new 1.5V LR6 AA alkaline batteries as required. Check that the batteries are correctly inserted with the correct polarity. If the problem persists, the thermostat might need a reset or could have a hardware issue.
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Nothing appears on screen but flashing 19 and year
@Eric Stanley Britt
Where is the battery compartment
The battery compartment on the Honeywell T3 is located behind the front case. To access it, lift up the front case, then slide down the section with two small bumps to remove the batteries.
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