Mitsubishi Electric MXZ-3C54VA, Service Manual

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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 operates at rated frequency.
4. Indoor fan operates at High speed.
5. After 30 minutes, test run operation finishes and EMERGENCY OPERATION starts (Operation frequency of compressor
varies).
6. To cancel test run operation (EMERGENCY OPERATION), press EMERGENCY OPERATION switch or any button on
remote controller.
8-3. HOW TO OPERATE FIXED-FREQUENCY OPERATION <Test run operation>
Both indoor and outdoor unit are under the
same temperature/humidity condition.
Operation : TEST RUN OPERATION (Refer to 8-3.)
Dry-bulb temperature ( )
Relative humidity (%)
20 50
25
60
30
70
8-4. OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT CURVE
(single operation)
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/cm 2 [Gauge])
(1) COOL operation
22-class unit 25-class unit
15-class unit 20-class unit
MXZ-3C54VA
Ambient temperature ( )
Ambient humidity (%) Ambient temperature ( )
Ambient humidity (%)
Outdoor low pressure
(MPa[Gauge])
Outdoor unit current (A)
15 20 25 30 35
50 60 70
0.6
0.7
0.8
0.9
1.0
1.1
1.2
(%)
15 20 25 30 35
50 60 70 (%)
40Hz
1
2
3
4
5
40Hz
12
11
10
9
8
7
6
Ambient temperature ( )
Ambient humidity (%) Ambient temperature ( )
Ambient humidity (%)
Outdoor low pressure
(MPa[Gauge])
Outdoor unit current (A)
0.6
0.7
0.8
0.9
1.0
1.1
1.2
40Hz
1
2
3
4
5
40Hz
12
11
10
9
8
7
6
15 20 25 30
35
50 60 70
(%)
15 20 25 30
35
50 60 70
(%)
Outdoor low pressure
(MPa[Gauge])
Ambient temperature ( )
Ambient humidity (%) Ambient temperature ( )
Ambient humidity (%)
Outdoor unit current (A)
50 60
70 (%)
40Hz
13
12
11
10
8
9
7
6
40Hz
15 20 25 30 35
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
50 60
70 (%)
15 20 25 30 35
1
2
3
4
5
6
Outdoor low pressure
(MPa[Gauge])
Ambient temperature ( )
Ambient humidity (%) Ambient temperature ( )
Ambient humidity (%)
Outdoor unit current (A)
50 60
70 (%)
40Hz
13
12
11
10
8
9
7
6
40Hz
15 20 25 30 35
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
50 60
70 (%)
15 20 25 30 35
1
2
3
4
5
6
35-class unit 42-class unit
Ambient temperature ( )
Ambient humidity (%) Ambient temperature ( )
Ambient humidity (%)
Outdoor low pressure
(MPa[Gauge])
Outdoor unit current (A)
0.7
0.8
0.9
1.0
1.1
1.2
1.3
40Hz
1
2
3
4
5
40Hz
13
12
11
10
9
8
7
15 20 25 30 35
50 60
70 (%)
15 20 25 30 35
50 60
70 (%)
Ambient temperature ( )
Ambient humidity (%) Ambient temperature ( )
Ambient humidity (%)
Outdoor low pressure
(MPa[Gauge])
Outdoor unit current (A)
13
12
11
10
9
8
7
(%)
50 60 70
(%)
15 20 25 30 35
0.7
0.8
0.9
1.0
1.1
1.2
1.3
40Hz
15 20 25 30 35
1
2
3
4
5
40Hz