Check Points - Danfoss DHP-A Service Instructions Manual

10.2.1 Measurement checking sensors during fault tracing
Table 8. Outdoor sensor / Defrost sensor
°C ohm, Ω
-30 1884
-25 1443
-20 1115
-15 868
-10 681
-5 538
0 428
5 343
10 276
15 224
20 183
25 150
30 124
35 103
40 86
10.3

Check points

Table 10. Temperatures
Name
Condensing temperature
Evaporation temperature
Superheating
Radiator circuit
Brine circuit
Overheating R407C
Table 11. Expansion valve factory setting
Name
Danfoss TUBE R404A, 4.2 kW
Danfoss TUBE R404A, 5.6 kW
Danfoss TUBE R404A, 8,4 kW
Danfoss TUBE R404A, 12.0 kW
Danfoss TUBE R404A, 15.3 kW
36 – Service instructions VMGFC302
Values
0.5 – 1.5 °C above supply line temperature
7 - 8 °C lower than incoming brine
4 - 8 K temperature difference
5 - 10 K temperature difference
2 - 5 K temperature difference
4K ±1 K
Setting
From fully closed position, screw 3 turns out
From fully closed position, screw 5,5 turns out
From fully closed position, screw 5 turns out
From fully closed position, screw 5.25 turns out
From fully closed position, screw 2.75 turns out
Table 9. other sensors
°C kilo ohm, kΩ
0 66,3
5 52,4
10 41,8
15 33,5
20 27,1
25 22,0
30 18,0
35 14,8
40 12,2
45 10,1
50 8,5
55 7,1
60 6,0
65 5,0
70 4,2
75 3,7
80 3,1
85 2,7