Sinotimer Tm630s Manual !!install!! -

| Problem | Most Likely Cause | Solution | | :--- | :--- | :--- | | | Power failure or dead backup battery | Check mains power. Replace internal battery (1.2V Ni-MH). | | Timer does not turn ON | Mode is set to "Off" (Manual override) | Press Manual/Auto until "Auto" is on screen. | | Timer turns ON/OFF at wrong times | AM/PM confusion or wrong day set | Re-enter clock setting mode. Verify "AM/PM" status. | | Relay clicks but no output power | Inductive load welded the contacts | Load exceeds 16A inductive. Replace relay or reduce load. | | Unit resets every Wednesday | Internal battery voltage is too low (<1.0V) | Replace the Ni-MH battery (soldering may be required). | | Cannot enter programming mode | Keyboard lock is active (rare) | Press and hold Clock + Prog for 10 seconds to unlock. |

Use "Day," "Hour," and "Min" to choose when the device should turn on. sinotimer tm630s manual