Heating Operation - Fujitsu AO G12KBTB Series Service Instructions Manual

1-2. Heating operation

A sensor (room temperature thermistor) built in indoor unit body will usually perceive difference or
variation between setting temperature and present room temperature, and controls operation fre-
quency of compressor.
• If the room temperature is 6.0 °C lower than a set temperature, the compressor operation frequen-
cy will attain to maximum performance.
• If the room temperature is 1.0 °C higher than a set temperature, the compressor will be stopped.
• When the room temperature is within the range of +1.0°C to -6.0°C of the setting temperature, the
compressor frequency is controlled within the range shown below.
• Compressor frequency range
Model name
ARXG12KHTAP
ARXG14KHTAP
ARXG18KHTAP
ARXG22KHTAP
• Limit of maximum speed based on outdoor temperature
In heating operation, maximum frequency is defined by outdoor temperature and fan mode.
Model name
ARXG12KHTAP
ARXG14KHTAP
ARXG18KHTAP
ARXG22KHTAP
1-2. Heating operation
Minimum frequency
Outdoor
temperature rises
14°C
-10°C
Outdoor
temperature
HIGH
zone
A zone 120
B zone 120
C zone 120
A zone 120
B zone 120
C zone 120
A zone 120
B zone 120
C zone 120
A zone 130
B zone 130
C zone 130
8
8
8
10
Outdoor
temperature drops
C zone
12°C
B zone
-12°C
A zone
Indoor unit fan mode
MED
98
98
98
89
89
89
85
85
85
101
101
101
- (01-3) -
Unit: rps
Maximum frequency
120
120
120
130
Unit: rps
LOW QUIET
82 67
82 67
82 67
68 60
68 60
68 60
56 49
56 49
56 49
75 66
75 66
75 66
1. Compressor frequency control