:
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
26
OUTDOOR FAN CONTROL
There are eight step levels (W1 to W8); however, OFF = 0 rpm is not displayed as a step level.
Table 26 —Eight Steps of Outdoor Fan Control
Fan Control in Cooling Mode
Table 27 —Fan Control by Outdoor Temperature (T4) and Compressor Frequency
SEQUENCE:
1. Outdoor fan will come on (W7) for 20 seconds before compressor starts.
2. Outdoor fan continues to run (W7) for another 20 seconds after compressor starts.
3. Based on outdoor temperature (T4), outdoor fan will follow step level for another 40 seconds as shown in table above.
4. 60 seconds after the compressor starts, outdoor fan step level is determined based on T4, T5, and Tc.
A210260A210266
Fig. 32 —Fan Control by Condensing Temperature (Tc)
Method B shows the T4 < 23°F operation as mentioned in the above table.
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Fig. 33 —Fan Control Correction by Compressor Discharge Temperature (T5)
FAN OFF W1 W2 W3 W4 W5 W6 W7
RPM
Up 0 300 330 400 460 520 630 780
Down 0 0 300 380 440 500 610 760
38VMB036~060HDS3-1
Frequency < 34 34 ≤ Frequency < 48 Frequency ≥ 50
Minimum Maximum Minimum Maximum Minimum Maximum
T4 ≥ 84.2°F W2 W7 W4 W7 W6 W7
62.6°F ≤ T4 < 84.2°F W1 W4 W2 W6 W4 W6
41°F ≤ T4 < 62.6°F OFF W2 W1 W4 W3 W6
32°F ≤ T4 < 41°F OFF W1 W1 W2 W1 W4
23°F ≤ T4 < 32°F OFF W1 W1 W2 W1 W2
T4 < 23°F OFF OFF OFF OFF OFF OFF
L*: Outdoor fan runs at maximum speed according to fan control by T4 and frequency
table. Under the condition that the maximum speed is OFF, use W1 instead.
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