Daikin VRV Plus Series General Information Manual page 119

Si33-003.book Page 115 Monday, June 25, 2001 9:06 AM
SiE33-003
7.9 Bad Examples and Good Examples in Installation
7.9.1 Example 1: Signal interference due to use of multiple core cable (all model)
Situation
Although for the purposes of group control there are only 2 units per group there are transmission
malfunctions between the indoor units and the remote control and the remote control's address display is
showing non-existent addresses such as 13 or 15.
Source of Problem Multiple core cable has been used for at least part of the interconnecting wiring between the remote
and Remedial control and the indoor units.
Action This has resulted in signal interference leading to a transmission malfunction.
The multiple core cable was replaced by twin core cable and the fault disappeared.
Main Points
General Information
Although twin core cable had been run from each unit, multiple core cable was used on the way.
In schools, etc., because remote controls are often installed in a single first floor control room, it is
easier to use a multi-core cable.
Signal interference can result in non-existent addresses appearing on the display.
: http://splitoff.ru/tehn-doc.html
Appendix
115