Fujitsu AOU30RLXEH, Service Instruction

Page: 13 / 120

1-8. COMPRESSOR CONTROL
1. OPERATION FREQUENCY RANGE
The operation frequency of the compressor is different based on the operation mode as shown in Table 10.
( Table 10 : Compressor operation frequency range )
AOU30RLXEH
15rps
55rps
Min
Max
Cooling
18rps
80rps
Min
Max
Heating
Tc : Compressor temperature
Condition
Mode: Cooling
Mode: Heating
Ta > 50°F(10° C),
Below 3 hours from comp stop
Below 3 hours from comp stop
2. OPERATION FREQUENCY CONTROL AT START UP
The compressor frequency soon after the start-up is controlled as shown in Fig.12.
(Fig.12 : Compressor Control at Start-up)
Upper
limit
speed
Upper
limit
speed
Upper
limit
speed
Upper
limit
speed
Elapsed time
Elapsed time
Elapsed time
Elapsed time
Ta : Outdoor temperature
< Normal start-up >
=
60
28
40
54
70
180 270 360
30 120 300 650
30
270
480 560 620 650 (sec)
(sec)
(sec)
(sec)
16
25
54
40
28
70
(rps)
(rps)
(rps)
(rps)
16
25
54
70
70
60 180 300 620 720
28
30
54
40
Condition
Mode: Heating
Ta < 50°F(10° C)
Condition
Mode: Heating
Ta > 50°F(10° C)
Condition
Mode: Cooling
3 hours or longer from comp stop
=
Tc > 89.6°F(32° C)
Tc > 89.6°F(32° C)
=
3 hours or longer from comp stop
3 hours or longer from comp stop
01-09