Low Outdoor Temperature Protection - Fujitsu ASYG12KGTE Service Manual

8-5. Low outdoor temperature protection

→hen the outdoor temperature sensor detects lower than the trigger condition below, the compres-
sor is stopped.
Operation mode
Trigger condition
Release condition
8-6. High temperature and high pressure release control
(heating mode)
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
8-5. Low outdoor temperature protection
Indoor unit heat exchanger
temperature drops
Stable zone
DE
- (04-32) -
Cooling/Dry
-15 °C
-10 °C
AB: 63°C
BC: 55°C
CD: 53°C
DE: 50°C
Operation
-25 rps/120 sec.
-3 rps/60 sec.
8. Various protections