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W-2WAY ECO-i SYSTEM
Control Functions
3-1. Compressors Mounted in the Outdoor Units
[SPW-C0705DXHN8, C0905DXHN8, C1155DXHN8, C1305DXHN8, C1405DXHN8]
3-2. Compressor Selection Rules
In cooling mode, all inverter compressors in the outdoor units are designed to operate simultaneously. All the
inverter compressors will stop at a time when the outdoor is stopped accordingly. Constant-speed compressors
run in order of the shortest amount of operating time. In heating mode, the inverter compressor with the shortest
amount of operating time runs at first followed by the compressors in order of the shortest amount of operating
time including inverter units.
*Immediately after installation, all compressors have an operating time of zero. In this case, the compressors
start in the following sequence: Inverter compressor > Constant-speed compressor 1 > Constant-speed com-
pressor 2.
Examples of accumulated operating time: ODU=Outdoor Unit
Suppose the following tentative system.
Compressor Selection Sequence in Cooling Mode:
All the inverter compressors are firstly selected simultaneously .
3. Compressor Control
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