Compressor Operation Frequency; Cooling Operation; Thermostat Control - Panasonic CS-E15DKEW Service Manual

CS-E15DKEW CU-E15DKE / CS-E18DKEW CU-E18DKE / CS-E21DKES CU-E21DKE
8.1.2.

Compressor Operation Frequency

Intake Air Temperature - Internal Setting Temperature (°C)
Zone Cooling & Soft Dry
1
2
3
4
5
6
7
8
9
10
11
12
Operating Frequency Calculation Formula:
CompHz = Freq. A × Freq. H + Freq. C
Example Calculation:
Model No.: E18DK
Operation Mode: Cooling
When Intake Air Temperature - Internal setting Temperature:
1.5°C
CompHz = Freq. A × Freq. H + Freq. C
= 1.53 × 46 + 2.5
= 72 Hz (It cuts down less than a decimal point)
Remarks:
When Freq. H is equal to 46 (Cooling), 39 (Heating) or above, the Comp. may run at the freq. higher than Fc or Fh up to max.
freq. operation.
Best Amenity Control
Every 90s (Cooling), 120s (Heating) maintain same zone Freq. H + 1 until Fc (46), Fh (39).
8.1.3.

Cooling Operation

8.1.3.1.

Thermostat control

• Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -1.5°C.
• Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature > Compressor OFF
point +0.5°C.
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
Nil
Nil
Heating Cooling
1.5 1
1.0 1
0.5 14
0.0 20
-0.5 27
-1.0 35
-1.5 43
-2.0 46
-2.5 46
-3.0 46
-3.5 Nil
-4.0 Nil
Cooling & Soft Dry
Low Load (Freq. H
High Load (Freq. H > 10)
Heating
Low Load (Freq. H
High Load (Freq. H > 12)
Freq. Range
Cooling Fc
Operation Range
Heating Fh
Operation Range
20
Freq. H
Soft Dry Heating
1 1
1 1
8 11
8 15
8 22
11 27
11 36
11 39
11 39
11 39
Nil 39
Nil 39
E18DK
Freq. A Freq. C Freq. A
9) 1.2 5.0 1.7
1.53 2.5 2.0
E18DK
Freq. A Freq. C Freq. A Freq. C
11) 1.6 8.0 1.9
2.2 1.0 2.35
E18DK
72
12 ~ 86
86
14 ~ 128
Remark
Fc, Fh
Fc, Fh
Fc, Fh
Fh
Fh
E21DK
Freq. C
7.0
4.0
E21DK
7.0
1.0
E21DK
96
12 ~ 102
92
14 ~ 128