High Pressure Protection Control - Fujitsu AOYG45LAT8 User Manual

5 . HIGH PRESSURE PROTECTION CONTROL

During the compressor in operation,
When the discharge high pressure sensor will detect the high pressure sensor.
The high pressure is controlled in the following protections.
HIGH PRESSURE PROTECTION 1
.
During Cooling / Dry mode
<Start and Release condition>
When the compressor speed meets following conditions.
( Table 24 : Cooling / Dry high pressure protection control)
Compressor speed [rps]
Cooling
Dry
<Operation>
The compressor speed -5rps every 60 seconds.
If the compressor operates at minimum speed for 60 seconds and the release condition isn't met,
it will be stopped.
.
During Heating mode
<Start and Release condition 1>
When the compressor speed meets following conditions.
( Table 25 : Heating high pressure protection control)
Compressor speed [rps]
Heating
<Operation>
The compressor speed -5rps every 60 seconds.
If the compressor operates at minimum speed for 60 seconds.
<Release condition 2>
If the compressor was stopped by protection, it will restart after 3 minutes ST
and high pressure is lower than 3.00MPa.
rps < 20
=
20 < rps < 30
=
30 < rps
rps < 20
=
20 < rps < 90
=
90 < rps
High pressure
Control
HP > 3.30MPa HP < 3.10MPa
=
HP > 3.75MPa HP < 3.55MPa
=
HP > 4.00MPa HP < 3.80MPa
=
High pressure
Control
HP > 3.30MPa HP < 3.10MPa
=
HP > 3.50MPa HP < 3.30MPa
=
HP > 3.30MPa HP < 3.10MPa
=
01-44
Release
=
=
=
Release
=
=
=