High Temperature And High Pressure Release Control - Fujitsu ASUH09LPAS Service Manual

8-6. High temperature and high pressure release control

The compressor is controlled as follows.
Indoor unit heat exchanger
temperature rises
Zone A
AB
Zone B
BC
Zone C
CD
Zone D
Zone E
Zone
Zone A Compressor is stopped.
Zone B
The rotation number of compressor is decreased.
Zone C
Zone D
The protection is released and the operation is returned to normal mode.
Zone E
8-6. High temperature and high pressure release control
Indoor unit heat exchanger
temperature drops
Stable zone
DE
- (04-33) -
AB: 145.4°F (63°C)
BC: 131.0°F (55°C)
CD: 127.4°F (53°C)
DE: 122.0°F (50°C)
Operation
-25 rps/120 sec.
-3 rps/60 sec.
8. Various protections