42
15 Protection Control
15.1. Time delay safety control
• The compressor does not restart for 3 minutes after stop of compressor.
15.2. Total running current control
• When the air conditioner has been operated at the capacity designated by the indoor unit and the total running current exceeds
setting I1, the operating frequency of the compressor is reduced. Conversely, when the total current drops below setting I1, it is
increased (but only up to the capacity designated by the indoor unit).
• The compressor is stopped as soon as the total current exceeds setting I2.
• If the compressor is stop by the total running current control on 3 occasions in a 20-minutes period, the “F98” error is displayed.
15.3. IPM (Power transistor) prevention control
Overheating prevention control
• The compressor is stopped when the overheating protection circuit inside the IPM has been activated. It restarts after 3 minutes.
• Activation temperature: 110°C
Reset temperature: 95°C
DC peak current control
• When the inverter load current (DC peak current) exceeds the setting value (22.5A), the compressor is stopped immediately. If
this happens within 30 seconds after it started operating, it will restart one minute later; if it happens after 30 seconds have
elapsed since it started operating, it will restart 3 minutes later.
• If the DC peak current exceeds the setting value on 7 consecutive occasions within 30 seconds after the compressor started
operating, the “F99” error is displayed, and the unit operation is stopped.
15.4. Compressor Overheating Prevention Control
• When the compressor discharge temperature exceeds 105°C, compressor frequency control (including expansion valve control)
is conducted.
• If the compressor stops when compressor discharge temperature exceeds 112
C for 3 occasions within 30 minutes, TIMER LED
blinks (F97: Compressor overheat).
Model
Setting
CU-2RE15MBE CU-2RE18MBE
Dry-Cooling
l1
9.0A
9.0A
l2
15.0A
15.0A
Heating
l1
12.5A
12.5A
l2
-
17.0A
Summary of Contents for CS-MRE7MKE
Page 15: ...15 4 Location of Controls and Components 4 1 Indoor Unit 4 2 Outdoor Unit 4 3 Remote Control ...
Page 16: ...16 5 Dimensions 5 1 Indoor Unit ...
Page 17: ...17 5 2 Outdoor Unit ...
Page 18: ...18 6 Refrigeration Cycle Diagram ...
Page 19: ...19 7 Block Diagram ...
Page 20: ...20 8 Wiring Connection Diagram 8 1 Indoor Unit ...
Page 21: ...21 8 2 Outdoor Unit ...
Page 22: ...22 9 Electronic Circuit Diagram 9 1 Indoor Unit ...
Page 23: ...23 9 2 Outdoor Unit ...
Page 24: ...24 10 Printed Circuit Board 10 1 Indoor Unit 10 1 1 Main Printed Circuit Board ...
Page 25: ...25 10 1 2 Power Printed Circuit Board 10 1 3 Indicator Printed Circuit Board ...
Page 26: ...26 10 2 Outdoor Unit ...
Page 79: ...79 18 1 3 To remove power electronic controller 18 1 4 To remove discharge grille ...
Page 80: ...80 18 1 5 To remove control board 18 1 6 To remove cross flow fan and indoor fan motor ...
Page 81: ...81 ...
Page 85: ...85 ...
Page 86: ...86 19 1 1 2 CS MRE9MKE ...
Page 87: ...87 ...
Page 88: ...88 19 1 2 Two Indoor Unit Operation 19 1 2 1 CS MRE7MKE x2 ...
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Page 90: ...90 19 1 2 2 CS MRE9MKE CS MRE7MKE ...
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Page 94: ...94 19 2 1 2 CS MRE9MKE ...
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Page 96: ...96 19 2 1 3 CS MRE12MKE ...
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Page 98: ...98 19 2 2 Two Indoor Unit Operation 19 2 2 1 CS MRE7MKE x2 ...
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Page 100: ...100 19 2 2 2 CS MRE9MKE x2 ...
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Page 102: ...102 19 2 2 3 CS MRE12MKE x2 ...
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