201
18 Alarm signal cannot been disarmed.
There are the following possibilities:
z Alarm setup is incorrect.
z Alarm output has been opened manually.
z Input device error or connection is incorrect.
z Some program versions may have this problem. Please upgrade your system.
19 Alarm function is null.
There are following possibilities:
z Alarm setup is incorrect.
z Alarm cable connection is incorrect.
z Alarm input signal is incorrect.
z There are two loops connected to one alarm device.
20 Remote control does not work.
There are the following possibilities:
z Remote control address is incorrect.
z Distance is too far or control angle is too small.
z Remote control battery power is low.
z Remote control is damaged or DVR front panel is damaged.
21 Record storage period is insufficient.
There are the following possibilities:
z Camera quality is too low. Lens is dirty. Camera is installed against the light.
Camera aperture setup is incorrect.
z HDD capacity is not enough.
z HDD is damaged.
22 Cannot playback the downloaded file.
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