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Manual 2100-689H

Page

32 of 42

FIGURE 14

Speed Taps

Speed Tap 1: Vent Speed
Speed Tap 2: Balanced Climate Speed
Speed Tap 3: Default Speed
Speed Tap 4: Medium Speed
Speed Tap 5: High Speed

Manual

2100-467H

Page

23 of 23

FIGURE 11

TROUBLESHOOTING GE X13-SERIES ECM2.3

™

MOTORS

CONT’D.

Model X13 Communication Diagnostics

The X13 motor is communicated through 24 VAC low voltage

(Thermostat Control Circuit Wiring).

Start with unit wiring diagram to confirm proper

connections and voltage (see Figure 11).

2. Initiate a demand from the thermostat and check the

voltage between the common and the appropriate motor

terminal (1-5). ("G" input is typically on terminal #1, but

refer to wiring diagram!)

a. If the low voltage communication is not present, check

the demand from the thermostat. Also check the

output terminal and wire(s) from the terminal strip or

control relay(s) to the motor.

b. If the motor has proper high voltage as identified

above (Motor not Running #1), and proper low voltage

to a programmed terminal, and is not operating, the

motor is failed, and will require replacement.

24VAC "R" Sig nal thro ug h

thermo stat o utp ut.

24VAC Co mmo n

24VAC "R" Sig nal thro ug h

thermo stat o utp ut.

24VAC Common

24VAC "R"

signal through

thermostat output

Setting Unit Airflow

The unit is set from the factory at the default speed.
Most units have three selectable cooling speed taps
that can be utilized. The default speed is the lowest
cooling speed. The two higher speed taps can be used
for higher duct static applications so that the unit can
maintain the recommended airflow as shown in Table
14. The higher speeds can also be used when higher
sensible cooling is desired. To change to the higher
speed taps, move the orange/black wire on the blower
speed terminal block to either MED or HI. Refer to
Table 16 on page 36 for the corresponding airflow of
each tap. Set the unit duct static based on the highest
airflow that the unit will run at.

NOTE:

Be sure to adjust the system static or blower

speed to maintain airflows above the minimum

recommendations to prevent freeze up conditions

if Balanced Climate mode is activated.

Do not operate the unit in Balanced Climate mode
if running high static applications as indicated in
the blower performance table. If Balanced Climate
mode is activated as described on page 17, the unit
will run in this mode at all times unless there is a
call for ventilation, electric heat or 2nd stage cooling
from a 2-stage thermostat. At that time, the unit will
automatically activate a higher speed tap.

Blower Speeds

Five factory programmed speed taps (torque settings)
are available for the motor, and are selected through
different unit modes of operation. These modes are
energized by 24VAC signals from the low voltage
terminal block located inside the control panel by a
thermostat or other controlling device. Each speed tap
is programmed by Bard at the factory to different motor
torque settings (see Figure 14).

Multiple motor speed taps may be energized
simultaneously by 24VAC power during different modes
of operation. The highest number speed tap energized
takes priority with 5 being the highest and 1 being
the lowest. See Table 15 for the corresponding blower
speeds with the different modes of operation.
Programmed blower speed taps are as follows (see also
Figure 15):
Speed Tap 1:

Vent/blower only

speed

Speed Tap 2:

Balanced Climate

speed

Speed Tap 3:

Default LO cooling & heating

speed.

Energized by default for cooling operation through the
blower speed tap selection and is labeled as LO.
Speed Tap 4:

Optional MED Cooling & heating

speed.

Selected manually through the blower speed tap
selection and is labeled as MED.
Speed Tap 5: