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Manual 2100-643C
Page
40 of 59
FIGURE 2.16
Troubleshooting Motor Start Command
FIGURE 2.17
Troubleshooting Speed Voltage
Female Plug
< 1
Ω
Motor Start Command:
With the meter set to Continuity Beeper,
place the black (–) lead on Pin 5 and the red (+) lead on Pin 4 of
the female portion of the Molex-style plug connecting the motor
controller to the back of the wall-mount control cabinet. Meter
should audibly alert a closed-contact condition.
Note the plug-pin "flats" for proper orientation of the plug.
Female Plug
???VDC
Speed Voltage:
With the meter set to VDC, place the black (–) lead
on Pin 5 and the red (+) lead on Pin 1 of the female portion of the
Molex-style plug connecting the motor controller to the back of the
wall-mount control cabinet. Nominal voltage should be 2.8VDC to
7VDC. Reference Table 2.6 for exact voltage.
Note the plug-pin "flats" for proper orientation of the plug.
TABLE 2.6
Blower Speed Voltage Chart
Model
Blower Only
Free Cooling Mode
(CFM/VDC
Speed Voltage)
Free Cooling Mode
Below 40°F
(CFM/VDC
Speed Voltage)
Cooling
(CFM/VDC
Speed Voltage)
Electric Heat
D25A/D25L
Same as
Free Cooling
Mode
1500/6.0
900/2.0
900/2.0
1100/4.0
D28A/D28L
800/2.8
1100/3.8
1800/7.0
D35A/D35L
1100/3.0
1100/4.0
1100/4.0
D36A/D36L
800/2.8
1100/3.8
1800/7.0
D42A/D42L
950/3.1
1250/4.7
1800/7.0
D48A/D48L
1100/3.8
1600/6.3
1800/7.0
D60A/D60L
1100/3.8
1600/6.3
1800/7.0