Haier MRV5-H - Refrigerant Charge Check

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8.2.2 Refrigerant charge check
(1) Refer to the R410A system static balance pressure reference value form
(2) Check if the temp. di󰀨erence between coil pipe and ambient temp. less than 39.2°F, if yes, it means the system
lack of refrigerant.
R410A system static balance pressure reference value
Outdoor ambient temp. (°F) Pressure (psi) Outdoor ambient temp. (°F) Pressure (psi)
-9.4 37.4 60.8 173.7
-7.6 39.4 62.6 179.1
-5.8 41.6 64.4 184.6
-4 43.6 66.2 190.3
-2.2 46 68 196.1
-0.4 48.1 69.8 201.9
1.4 50.6 71.6 207.8
3.2 52.9 73.4 213.9
5 55.5 75.2 220.1
6.8 58 77 226.5
8.6 60.8 78.8 233.1
10.4 63.4 80.6 239.7
12.2 66.1 82.4 246.4
14 69 84.2 253.4
15.8 71.9 86 260.3
17.6 75 87.8 267.6
19.4 78 89.6 274.8
21.2 81.2 91.4 282.2
23 84.4 93.2 289.9
24.8 87.7 95 297.6
26.6 91.2 96.8 305.4
28.4 94.7 98.6 313.6
30.2 98.2 100.4 321.7
32 101.9 102.2 330.1
33.8 105.7 104 338.5
35.6 109.5 105.8 347.2
37.4 113.4 107.6 356
39.2 117.5 109.4 364.9
41 121.7 111.2 374
42.8 125.9 113 383.3
44.6 130.2 114.8 392.9
46.4 134.6 116.6 402.5
48.2 139.1 118.4 412.3
50 143.7 120.2 422.2
51.8 148.5 122 432.3
53.6 153.3 123.8 442.8
55.4 158.2 125.6 453.2
57.2 163.3 127.4 463.9
59 168.5