Compressor Control - Fujitsu ASU30RLE Service Instruction

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
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)
< Normal start-up >
(rps)
70
54
Upper
limit
40
speed
28
(rps)
70
54
Upper
limit
40
speed
30
28
(rps)
70
54
Upper
limit
speed
25
16
30
(rps)
70
54
Upper
limit
40
speed
28
25
16
30
Cooling
Max
Min
15rps
55rps
60 180
Elapsed time
60 180
Elapsed time
120
Elapsed time
270
Elapsed time
Heating
Max
Min
18rps
80rps
270 360 (sec)
300 620 720 (sec)
300 650 (sec)
480 560 620 650
01-09
Condition
Mode: Cooling
Below 3 hours from comp stop
Mode: Heating
Below 3 hours from comp stop
Tc >
Ta > 50°F(10°C),
= =
Condition
Mode: Cooling
3 hours or longer from comp stop
Tc > 89.6°F(32°C)
Condition
Mode: Heating
3 hours or longer from comp stop
Ta < 50°F(10°C)
Condition
Mode: Heating
3 hours or longer from comp stop
Ta > 50°F(10°C)
=
(sec)
Ta : Outdoor temperature
Tc : Compressor temperature
89.6°F(32°C)