Haier YR-H 71 Service Manual page 49

Introduction of System
1. Only use two-unit switchover function
Detector is connected to two air conditioners with same type through a 4-poles screw-fixing terminal
at the interface of air conditioner, and correspondingly set dialing switch of the detector as two-unit
switchover operation mode. When only use two-unit switchover function, system do not need to
connect other parts. Two-unit switchover time can be set within the range of 1-127 hours by the low 7
bits of dialing switch, see dialing switch setting table for detail settings and corresponding times.
2. Use central controller to realize group control function
Please reference "Central controller YCZ-A001 manual" and "Weekly timer YCS-A001 manual".
3. Use central controller to realize two-unit switchover group control function
Please reference "Central controller YCZ-A001 manual" and "Weekly timer YCS-A001 manual".
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