48
1. Compressor
Control modes
Remarks
Control details
1-6. Discharge temperature over-rise prevention control
Frequency controls such as Hz-down and no more Hz-up will be conducted
according to the discharge temperature (TH4).
Temperature restriction: No more Hz-up ··· When TH4 detects 105
:
or more
Hz-down
··· -6Hz per min. when TH4 detects 110
:
or more
···
-10Hz per min. when TH4 detects 118
:
or more
1-7. Condensing temperature over-rise prevention control
Frequency controls such as Hz-down and no more Hz-up will be conducted
according to the outdoor condenser/evaporator temperature (TH6).
Temperature restriction: No more Hz-up ··· When TH6 detects 58
:
or more
Hz-down
··· -5Hz per min. when TH6 detects 60
:
or more
···
-10Hz per min. when TH6 detects 63
:
or more
1-8. Heat sink temperature over-rise prevention control
Frequency controls such as Hz-down and no more Hz-up will be conducted
according to the heat sink temperature (TH8).
Temperature restriction:
Models
No more Hz-up
Hz-down
78
:
78
:
71
:
71
:
78
:
78
:
78
:
81
:
81
:
74
:
74
:
81
:
81
:
81
:
PUHZ-RP1.6VHA
PUHZ-RP2VHA
PUHZ-RP2.5VHA
PUHZ-RP3VHA
PUHZ-RP4VHA
PUHZ-RP5VHA
PUHZ-RP6VHA
2. Fan
2-1. Normal control
Fan rotation times (rpm) will be controlled according to the outdoor outside
temperature (TH7).
• Control method: Inverter control
• Rotation times: Fan step (N) = 0 and 2 to 10
• Compressor start-up: Fan step is fixed to 9 for 30 seconds after the
start-up of compressor.
2-2. Correction of fan step according to the outdoor cond./eva. temperature
Fan step will be corrected according to the outdoor cond./eva. temp.(TH6).
• Correction range of condensing temperature : 19
:
to 62
:
• Correction range of fan step: -1 to +3
2-3. Correction of fan step according to the heat sink temperature
Fan step will be corrected according to the heat sink temperature (TH8).
• Correction range of heat sink temperature: 68
:
to 78
:
• Correction range of fan step: 0 to +2
2-4. Other
(1) Fan also stops when the compressor is being stopped. (Fan step = 0)
However, fan step will be set to 10 while the compressor is being stopped
due to the abnormal heat sink temperature (Error code = U5).
At this time, the compressor is just waiting for 3 minutes to restart.
N=2
N=3
N=4
N=5
N=6
N=7
N=8
N=9
N=10
40
[
:
]
-3
0
2
5
7
10 12
15 17
20 22
25 27
30 37
0
1
2
3
4
5
6
7
8
9
10
Step
(N)
Outside temperature (TH7)
RP1.6, 2
RP4-6
Step (N)—Rotation
times(rpm)
Rotation times(rpm)
0
105
135
165
205
265
340
430
530
680
700
RP2.5, 3
0
95
115
135
165
200
245
305
450
700
720
0
125
155
175
200
240
285
360
465
700
720
W
Hz-down amount: -5Hz per minute
From the previous page.
OCT04A-2.qxp 04.9.29 9:15 AM Page 48
