Why might a THM303M thermostat fail to maintain the HOLD function?
The HOLD function may be deactivated by an accidental press of the HOLD button or by making temporary temperature adjustments using the UP or DOWN keys, which causes the device to revert to the normal schedule at the next programmed interval. Low battery levels or the need for a system reset can also cause the HOLD setting to fail.
Why might the THM303M thermostat fail to maintain the HOLD function?
The HOLD function can be interrupted by accidental button presses or by making temporary manual temperature adjustments, which cause the device to return to its normal program at the next scheduled interval. Other causes include low battery power or the need for a system reset using the 'R' button.
What should be done if the THM303M thermostat does not maintain the HOLD function?
Verify that the HOLD key has not been accidentally pressed, which reactivates programmed settings. Check the batteries, as unstable power can cause erratic behavior. Avoid using temporary manual overrides (UP/DOWN) as they expire at the next programmed interval. If the issue persists, a reset can be performed by pressing the 'R' button with a pointed object.
Why might the HOLD function on a THM303M thermostat deactivate automatically?
The HOLD function may deactivate if the button is accidentally pressed or if a temporary temperature adjustment is made using the UP or DOWN keys, which causes the device to return to its normal program at the next scheduled interval. Additionally, low or unstable battery power can disrupt settings and cause the function to fail.
