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Protection Control
ESiEN09-06 A
36
Function
4. Protection Control
4.1
High Pressure Protection Control
This high pressure protection control is used to prevent the activation of protection devices due
to abnormal increase of high pressure and to protect compressors against the transient
increase of high pressure.
[In cooling operation]
[In heating operation]
High pressure not limited
Pc>3.10MPa
System load down 1 steps
Current step maintained
Pc>3.10MPa
EV1 opening adjustment
(Reducing low pressure to make
high pressure lower.)
Pc>3.49MPa
High pressure standby
Pc>3.64MPa
Pc<2.9MPa
Pc: HP pressure sensor detection
value for master unit
When occurring 3 times within
30 min., HPS is activated without high
pressure standby, thus outputting the
malfunction code “E3” .
After 10 sec.
Pc<3.0MPa
Pc<2.52MPa
After 60 sec.
INV upper limit
rps: 1-step up
Summary of Contents for ERQ Series
Page 2: ......
Page 16: ...Combination Table ESiEN09 06 A 6 General Information...
Page 17: ...ESiEN09 06 A Specifications 7 1 Specifications 8 1 1 Outdoor Units 8...
Page 33: ...ESiEN09 06 A Function general Function 23 1 2 Operation Mode...
Page 58: ...Outline of Control ESiEN09 06 A 48 Function...
Page 71: ...ESiEN09 06 A Wiring Diagram of Control Box Control Box EKEQ CBV3 61 3 2 F box...
Page 109: ...Test Operation ESiEN09 06 A 100 Test Operation 1 2 2 Turn power on...