Pressure Transducer/Controller - Trane Axiom VSHE024 Operating And Maintenance

Troubleshooting

Pressure transducer/controller

For units with the plenum fan option, gravity will affect the
diaphragm and consequently the pressure measurement
value of the pressure transducer/controller.
Note: This does not apply to units with the ECM fan/
motor option.
If the CFM control does not seem to be performing as
expected, the pressure transducer/controller may need to
be reset.This procedure will have been performed at the
factory and generally will not be needed in the field.
To perform this procedure, the power on to the transducer
must be on but the pressure probe (tubing) must not be
connected. Place the magnet at the marked location to
permit the activation of a reed switch in the control
electronics from the outside.This process will adjust the
gravity effect to zero.The controller will display for a short
time that the offset has been zeroed and saved.
Once this procedure is complete, attach the pressure
tubing to the negative pressure port.
Figure 31. Pressure controller
62 WSHP-SVX13C-EN