A common problem
No response may be caused by the remote, a protection delay or a power or control fault. Do not open electrical components.
Start with external, safe checks:
Replace the remote batteries and check that its display works.
Make sure a valid mode is selected and point the remote at the receiver.
Wait a few minutes after stopping; some units have a restart protection delay.
Note any flashing indicators or error code and the exact model number.
Request service if the unit still does not respond after replacing the batteries, switches off immediately or displays an error code.
If a breaker trips again, you smell burning or hear crackling, do not restart the unit or open the electrical panel.
A better project. A cleaner installation. Fewer unforeseen costs during construction.
