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SiBE28-804
Frequency Regulating Functions
Functional Description
67
4.4
Low Pressure Protection Control
In order to prevent abnormal low pressures in the system, the below control function will be
activated. Low pressure is detected by the low pressure sensor.
RZQ71C7, RZQS71·100C7V1B
Normal operation
Lp<0.12MPa
Normal operation
&
(When cooling operation)
(When heating operation)
• Within 10 minutes
after defrosting
• LPS activates contin-
uous for 5 minutes.
Copmressor upper
limit frequency
20 steps
Compressor upper
limit frequency
10 steps
Compressor upper limit
frequency
57 Hz
Compressor stop: 0 Hz
Malfunction stop (E4 indication)
&
• Lp>0.15MPa
• 30 sec elapsed
10 times or less
stopping in 200 minutes
• Lp<0.12MPa
• 5 minutes elapsed
• Lp<0.12MPa
• 10 seconds elapsed
• Lp>0.15MPa
• 10 seconds elapsed
Condition E
Condition E
Stopped 11 times in 200 minutes
• Within 5 minutes after starting
• After 10 minutes after defrosting
Condition E* : &
• OR
• Lp > 0.15 Mpa 1 minute elapsed
• Lp>0.15MPa
• 1 minute elapsed
&
&
• OR
• Lp<0.12MPa
Condition E
• Lp<0.12MPa
• 10 seconds elapsed
• Lp<0.12MPa
• 1 minute elapsed
Lp>0.15MPa
Compressor upper
limit frequency
57 Hz
Summary of Contents for FHQ100BUV1B x 2
Page 13: ...SiBE28 804 2 ...
Page 19: ...Model Name and Power Supply SiBE28 804 8 General Information ...
Page 29: ...Specifications SiBE28 804 18 Specifications ...
Page 33: ...Wired Remote Controller SiBE28 804 22 Remote Controller 1 2 Installation ...
Page 34: ...SiBE28 804 Wired Remote Controller Remote Controller 23 ...
Page 93: ...Outdoor Unit Fan Speed Control SiBE28 804 82 Functional Description ...
Page 131: ...Test Run and Operation Data SiBE28 804 120 Test Operation ...
Page 251: ...Troubleshooting by Remote Controller Display LED Display SiBE28 804 240 Troubleshooting ...
Page 277: ...PCB Layout SiBE28 804 266 Appendix ...
Page 297: ...RZQ100 140C7 RZQS125 140C7V1B SiBE28 804 286 Removal Procedure ...
Page 311: ...SiBE28 804 iv Index ...