Suddenly a moment passes between the button press and the movement: sluggish responses are an early warning you should take seriously before they become complete dropouts.
Check the energy first
Under load the voltage of weak batteries briefly sags, and the control takes noticeably longer for the command. Fresh brand batteries fix this pattern immediately, and it shows most clearly in the cold.
Radio path and surroundings
From a long distance or behind obstacles the signal needs several attempts, which feels like a delay. Test from a short distance with a clear view, if the device responds directly there, the radio path was the issue and not the control.
If the sluggishness remains
If the delay remains with fresh batteries and a clear path, contacts or solder joints inside are probably ageing, a typical precursor of a loose contact. Have the device checked while it still works, then the exchange stays plannable.
Frequently asked questions
Is a small delay not normal?
A constant, minimal response time is inherent to the system. It becomes conspicuous when the delay is new, fluctuates or grows noticeably.
The delay only occurs in the morning, why?
Cold batteries deliver less voltage, and it normalises during the day. A fresh set and warm storage overnight provide the remedy.
Can the receiver unit cause the delay?
Yes, its electronics can become sluggish too. The cross-test with a second remote shows on which side the time is lost.