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Rob
Rob, Home Appliance Technician
Category: Appliance
Satisfied Customers: 420
Experience:  20 yrs. experience with a major worldwide manufacturer.
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I have a RT300RF digital wireless thermostat. Problem is

Customer Question

Hi i have a RT300RF digital wireless thermostat. Problem is after setting the room temp to say 19`c, the room temp is going up to 26`c and the radiators are still hot. I have checked the manual and the test sequence, where you set the temp and get the green LED lights up on the receiver unit. So the receiver unit is getting the RF but the temp keeps going up in the house. The frost protection setting is off and the batteries have been replaced in the thermostat unit. Do you have any idea of the cause of this?? Or this the thermostat unit faulty? Many thanks Gary
Submitted: 1 year ago.
Category: Appliance
Expert:  Andrew Smith replied 1 year ago.
Can you take the transmitter off the wall and place it under the boiler and see if it performs better.
Customer: replied 1 year ago.
The transmitter is not on the wall but I have put it close to the receiver unit earlier whilst testing the RF, it is picking up the RF signal ok, as the green LED lights up on the receiver unit.
Expert:  Andrew Smith replied 1 year ago.
Ok, we need to know if it is the receiver or the boiler at fault.What is the system pressure reading?
Customer: replied 1 year ago.
Ok the pressure was practically on 0 , I've just upped the pressure to 1.75 bar, which is in the middle of the green section. I've now switched the heating back on. The current temp is 24'c and have set the thermostat at 19'c, and I'll see if the rads come back on. Thanks Gary
Customer: replied 1 year ago.
The boiler has cut in again and the radiator s are warming up again, even though the current temp is reading 24'c.
Expert:  Andrew Smith replied 1 year ago.
ok, we have the heating working again, but the stat won't turn it off again?

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