Digital thermostat tolerances

[Robert Tyrrell]

I've fitted a new room stat and programmer to a Y plan system and my customer is complaining that the heating is not working properly as its. Of shutting off when it reaches temperature. I have noticed that it tends to shut off about two degrees higher than the room stat is set for and I'd like to know if there's a way to change the tolerances on the stat? It's a flomasta wireless stat and programmer btw

 

[TVP&H Ltd]

Flomasta.???? Fit a Honeywell, acurate to 0.5 of a degree. Are you using a calibrated thermometer position at the same position as the current roomstat?

 

[Robert Tyrrell]

Flomasta.???? Fit a Honeywell, acurate to 0.5 of a degree. Are you using a calibrated thermometer position at the same position as the current roomstat?

Tried the Honeywell but it wouldn't work, and it kept making a high pitched whistle. I put the old Sallus programmer back on, tied it in with a new Flomasta wireless stat and I've heard nothing since from the customer so I'me happy. Don't care what brand it is as long as it works