Mitsubishi Electric MUZ-GA50VA Service Manual page 15

OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
<How to operate fixed-frequency operation (Test run operation)>
1. Press EMERGENCY OPERATION switch to COOL or HEAT mode (COOL : Press once, HEAT : Press twice).
2. Test run operation starts and continues to operate for 30 minutes.
3. Compressor starts at fixed-frequency.
4. Indoor fan operates at High speed.
5. After 30 minutes, test run operation finishes and EMERGENCY OPERATION starts.
6. To cancel test run operation (EMERGENCY OPERATION), press EMERGENCY OPERATION switch or any button on
remote controller.
NOTE : The unit of pressure has been changed to MPa on the international system of units (SI unit system).
The conversion factor is: 1(MPa [Gauge]) =10.2(kgf/f
OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
COOL operation
1 Both indoor and outdoor unit are under the
same temperature/humidity condition.
2 Air flow : High speed
3 Operational frequency : 71Hz(MUZ-GA50VA)
MUZ-GA50VA -
(kgf/F [Gauge]) (MPa [Gauge])
0.9
9
0.8
8
0.7
7
0.6
6
0.5
5
0.4
4
3
0.3
15 18 20 25
50 60
Ambient temperature(˚C) Ambient humidity(%)
MUZ-GA60VA -
(kgf/F [Gauge])
(MPa [Gauge])
0.9
9
0.8
8
0.7
7
0.6
6
0.5
5
0.4
4
3
0.3
15 18 20 25
50 60
Ambient temperature(˚C) Ambient humidity(%) Ambient temperature(˚C) Ambient humidity(%)
MUZ-GA71VA -
(kgf/F [Gauge]) (MPa [Gauge])
0.9
9
0.8
8
0.7
7
0.6
6
0.5
5
0.4
4
3
0.3
15 20 25
18
50 60
Ambient temperature(˚C) Ambient humidity(%)
87Hz(MUZ-GA60VA)
62Hz(MUZ-GA71VA)
MUZ-GA50VA -
E1 E1
8
71Hz
7
6
5
4
30 32 35(˚C) 15 20 25
18
70 (%)
50 60
Ambient temperature(˚C) Ambient humidity(%)
E1 E1 MUZ-GA60VA -
9
8
87Hz
7
6
5
30 32 35(˚C) 15 18 20 25
70 (%) 50 60
MUZ-GA71VA -
E1
13
11
62Hz
9
7
5
30 35(˚C)
32 15 18 20 25
70 (%) 50 60
Ambient temperature(˚C) Ambient humidity(%)
f [Gauge])
Dry-bulb temperature
20
25
30
E1 E1
71Hz
30 35(˚C)
32
70 (%)
E1 E1
87Hz
30
32 35(˚C)
70 (%)
E1
62Hz
30
32 35(˚C)
70 (%)
15
Relative humidity(%)
50
60
70