Insteon Thermostat 2441TH Adjustment

[JLOB]

I have a couple of Insteon 2441th Thermostats.  Both perform well, but one of them has an offset problem relative to temperature registration.  If the unit is set at 70 degrees, the unit only calls for heat until the internal thermometer reaches 66 degrees.  In order to achieve 70 degrees of heat, I need to have the set point at 74 degrees.  Does anyone know if there’s either a manual or programmable adjustment capability?   Any help will be appreciated.

Thank you.

JLOB