Fujitsu AOHG07KGCA, Service Manual

Page: 124 / 147

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 Cooling/Dry
Trigger condition -15 °C
Release condition -10 °C
8-6. High temperature and high pressure release control
(heating mode)
The compressor is controlled as follows.
Indoor unit heat exchanger
temperature rises Indoor unit heat exchanger
temperature drops
Stable zone
AB
BC
CD
DE
Zone A
Zone B
Zone C
Zone D
Zone E
AB: 63°C
BC: 55°C
CD: 53°C
DE: 50°C
Zone Operation
Zone A Compressor is stopped.
Zone B
The rotation number of compressor is decreased.
-25 rps/120 sec.
Zone C -3 rps/60 sec.
Zone D
The protection is released and the operation is returned to normal mode.
Zone E
8-5. Low outdoor temperature protection
- (04-32) -
8. Various protections
C
O
N
TR
O
L
A
N
D
FU
N
C
TI
O
N
S
C
O
N
TR
O
L
A
N
D
FU
N
C
TI
O
N
S