Just had a new vaillant ecotec 28 combi boiler and Honeywell cm727 room stat fitted
We set the temp to 21 degrees and the room heats up nice and warm.
However once it's reached temperature the room starts to cool down to a point where it starts to feel chilly, yet the stat says 21 degrees and the only way we can start to feel warm again is to turn the temp up a degree or 2, then it heats up but we then go through same scenario.
Also when it's reached the set temperature the little flame is always on the stat, even though the boiler isn't firing.
Heating engineer has replaced the stat but still the same.
I thought a digital room stat would keep the temperature at a constant temperature which has been set not heat up then cool down.
To add the stat is in the living room and the rad has no TRV fitted, I have also tried various locations in the living room for the stat.
Appreciate any help or feedback
We set the temp to 21 degrees and the room heats up nice and warm.
However once it's reached temperature the room starts to cool down to a point where it starts to feel chilly, yet the stat says 21 degrees and the only way we can start to feel warm again is to turn the temp up a degree or 2, then it heats up but we then go through same scenario.
Also when it's reached the set temperature the little flame is always on the stat, even though the boiler isn't firing.
Heating engineer has replaced the stat but still the same.
I thought a digital room stat would keep the temperature at a constant temperature which has been set not heat up then cool down.
To add the stat is in the living room and the rad has no TRV fitted, I have also tried various locations in the living room for the stat.
Appreciate any help or feedback
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