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ESIE05-03
Outdoor Unit Functional Concept
Part 2 – Functional Description
2–51
3
2
4
5
1
3.3.6
Suction Pipe Superheat Protection Control (Heating Mode)
Outline
In case the suction superheat value in heating mode is too high, the oil return to the compressor will
be insufficient. In order to avoid that the compressor oil will be accumulated in the outdoor unit heat
exchanger, the upper limit frequency will be decreased.
Flow chart
Normal operation
Lowering upper limit
frequency for 1-step
every 20 seconds
Raising upper limit
frequency for 1-step
every 20 seconds
• Suction SH > 12°C
• Suction SH > 10°C
• EV opening degree = 480pls
• Suction SH > 12°C
• Suction SH > 10°C
• EV opening degree = 480pls
• Suction SH < 10°C
• EV opening degree < 450pls
• Suction SH < 8°C
• Suction SH < 6°C
• Suction SH < 6°C
• Upper limit frequency = Maximum frequency
• Suction SH < 8°C
• Suction SH < 10°C
• EV opening degree < 450 pls
OR
OR
OR
OR
&
&
&
• &
•OR
• &
ESIE05-03.book Page 51 Wednesday, April 6, 2005 4:09 PM
Summary of Contents for RZQ100B7W1B
Page 1: ...Service Manual ESIE05 03 RZQ71 125B8V3B RZQ100 140B7W1B Sky Air Inverter R 410A B series...
Page 2: ......
Page 10: ...ESIE05 03 viii Table of Contents 3 1 4 5...
Page 24: ...ESIE05 03 1 2 Part 1 System Outline 3 1 1 5...
Page 32: ...General Outline Outdoor Units ESIE05 03 1 10 Part 1 System Outline 3 1 1 4 5...
Page 42: ...Specifications ESIE05 03 1 20 Part 1 System Outline 3 1 1 4 5...
Page 56: ...Functional Diagrams ESIE05 03 1 34 Part 1 System Outline 3 1 1 4 5...
Page 58: ...ESIE05 03 1 36 Part 1 System Outline...
Page 70: ...Wiring Diagrams ESIE05 03 1 48 Part 1 System Outline 3 1 1 4 5...
Page 84: ...PCB Layout ESIE05 03 1 62 Part 1 System Outline 3 1 1 4 5...
Page 86: ...ESIE05 03 2 2 Part 2 Functional Description 3 1 2 5...
Page 110: ...General Functionality ESIE05 03 2 26 Part 2 Functional Description 3 1 2 4 5...
Page 150: ...ESIE05 03 3 2 Part 3 Troubleshooting 3 1 3 5...
Page 188: ...Troubleshooting ESIE05 03 3 40 Part 3 Troubleshooting 3 1 3 4 5...
Page 264: ...Additional Checks for Troubleshooting ESIE05 03 3 116 Part 3 Troubleshooting 3 1 3 4 5...
Page 266: ...ESIE05 03 4 2 Part 4 Commissioning and Test Run 3 1 4 5...
Page 306: ...ESIE05 03 5 2 Part 5 Disassembly and Maintenance 3 1 5...