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Technical Instructions
IDS BOVA E-Box Replacement - BTC 761702110 B (09.2022)
4 Replacement Instructions
1. Turn off power to the unit and wait at least 3 minutes.
WARNING: HAZARDOUS VOLTAGE 380 VOLTS DC
Wait 3 minutes after disconnecting power, then verify DC
voltage is less than 43 VDC at inverter test points P-N.
Components may store a dangerous electrical potential
of 380 Volts DC. Failure to follow these instructions could
result in personal injury or death.
2. Remove the access panel to the control board (Figure 2). Keep Screws for
re-use.
NOTICE: PRODUCT DAMAGE
Do not directly touch the components on the main board to
avoid static electricity damage.
Figure 2
Control Board Access
3. Cut the 6 zip ties to unbundle the control board wires
4. Cut the 2 zip ties around gaskets at the bottom of the E-box
5. Remove all of the component wires from the Control Board. Take a picture
before wire removal for dip switch and wiring reference.
The wires will need to be connected to the new control board once
installed.
To remove T3 and T4 sensors, remove white cover to disconnect sensor.
See Figure 3.
Figure 3
Push in
Remove white cover
Push in
6. Unscrew 16 screws to remove the top cover of the unit. When removing the
top cover, be careful not to damage the heat exchanger fi ns. Lean top panel
against wall. Refer to Figure 4.
Ensure fan motor is removed from control board to remove top cover.
Figure 4
Remove Top Cover
