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Control Specification
SiUS12-928_A
49
Function and Control
3.4
Discharge Pipe Temperature Control
Outline
The discharge pipe temperature is used as the internal temperature of the compressor. If the
discharge pipe temperature rises above a certain level, the upper limit of frequency is set to keep
this temperature from going up further.
Detail
3.5
Input Current Control
Outline
An input current is detected by the CT when the compressor is running, and the frequency upper
limit is set from the input current.
In case of heat pump model, this control, which is the upper limit control of the frequency, takes
priority over the lower limit control of four-way valve operation compensation.
Detail
Frequency control in each zone
Stop zone
After 2.5 seconds in this zone, the compressor is stopped.
Dropping zone
The upper limit of the compressor frequency is defined as operation frequency – 2 Hz.
After this, the output frequency is pulled down by 2 Hz every second until it reaches the keep
zone.
Keep zone
The present maximum frequency goes on.
Reset zone
Limit of the frequency is canceled.
Limitation of current dropping and stop value according to the outdoor temperature
The current drops when outdoor temperature becomes higher than a certain level (depending
on the model).
Zone
Control
Stop zone
When the temperature reaches the stop zone, the compressor stops.
Dropping
zone
The timer starts, and the frequency is
dropping
.
Keep zone
The upper limit of frequency is kept.
Reset zone
The upper limit of frequency is canceled.
(R10701)
120°C(24
8
°F)
111°C(232°F)
109°C(22
8
°F)
107°C(225°F)
Keep zone
Reset zone
Dropping zone
Compressor Stop
Dropping Zone
Stop Zone
Keep Zone
Reset Zone
(R116
8
2)
Summary of Contents for SUPER MULTI NX G Series
Page 1: ...SiUS12 928_A Applied Models Inverter Multi Heat Pump G Series J Series...
Page 7: ...SiUS12 928_A Table of Contents vi...
Page 10: ...SiUS12 928_A 1 List of Functions Part 1 List of Functions 1 Functions 3...
Page 11: ...SiUS12 928_A List of Functions 2...
Page 17: ...SiUS12 928_A Specifications 8...
Page 23: ...SiUS12 928_A Specifications Specifications 14...
Page 25: ...SiUS12 928_A Printed Circuit Board Connector Wiring Diagram 16...
Page 37: ...SiUS12 928_A Function and Control 28...
Page 69: ...SiUS12 928_A Control Specification Function and Control 60...
Page 71: ...SiUS12 928_A Operation Manual 62...
Page 73: ...SiUS12 928_A Duct Free System Operation Manual 64 2 Duct Free System 2 1 Remote Controller...
Page 84: ...Duct Free System SiUS12 928_A 75 Operation Manual...
Page 85: ...SiUS12 928_A Duct Free System Operation Manual 76 2 8 TIMER Operation...
Page 86: ...Duct Free System SiUS12 928_A 77 Operation Manual...
Page 87: ...SiUS12 928_A Duct Free System Operation Manual 78 2 9 Note for Multi System...
Page 88: ...Duct Free System SiUS12 928_A 79 Operation Manual...
Page 97: ...SiUS12 928_A Slim Duct Built In System Operation Manual 88...
Page 99: ...SiUS12 928_A Service Diagnosis 90...
Page 169: ...SiUS12 928_A Removal Procedure 160...
Page 225: ...SiUS12 928_A Trial Operation and Field Settings 216...
Page 235: ...SiUS12 928_A Appendix 226...