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Abstract of Function
Realization of two-unit switchover function: in normal operation status, one air conditioner is started
to operate under the control of detector and another one stops to wait, when it's time for switchover
the detector wakens the waiting air conditioner and recalculates time, and the previous running one
will continue to operate and automatically stops to wait half hour later. If any of air conditioner fails
to function, switchover timing is temporally stopped, the detector is automatically controlled to waken
another air conditioner and after that stop the malfunction one to wait status. The detector will
forward transfer the malfunction information when inquiring and automatically restore two-unit
switchover function after malfunction is removed. If air conditioner cannot reach the setting
temperature after a period of running, that is over-load, switchover timing will be temporally stopped,
the detector is automatically controlled to waken another air conditioner and two units operate
together until the setting temperature is obtained, now automatically stop the latter started conditioner
and restore two-unit switchover function automatically.
D.
Unit Number Setting Function
There is a 8-bit dialing switch inside the detector, the highest order is D8 used for setting single unit
operation mode or two-unit switchover operation mode; lower seven bits (D7, D6, D5, D4, D3, D2
and D1) are used for setting unit number (group control network) or two-unit switchover time
(two-unit switchover).
E.
Working Status Display Function
Detector indicators are divided into power indicator (red LED) and operation indicator (green LED):
the operation indicator has the function of displaying operation status, and the power indicator lights if
power is normal after power on; lit operation indicator means that detector works normally, and
flashed operation indicator shows operation status of detector and distinguishes the meaning of
different status by flashing times.
F.
Time Delay Control Function
When forming central control network through RS-485 bus, detector sets start delay function to
reduce impaction to power network because of simultaneous control and operation of air conditioners,
and delay time is created by detector randomly and automatically.
G.
Detector can only be used for some of Haier Commercail indoor type , for example: Free Multi Wall
mounted type, Console type etc. Detector is necessary for Weekly timer or central controller
installation for this types. But Duct type, Cassette type, Convertible type couldn't use detector., they
can directly be connected with weekly timer or central controller.
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