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Replacing a T/H Sensor
Prerequisites
- A T/H sensor needs to be replaced.
- A spare T/H sensor of the same model is available and functional.
Procedure
- Tap Shutdown on the home screen of the display module.
Exercise caution because the unit is still energized after it is shut down on the screen of the display module.
- Open the electric control box, turn off the active power switch QF1 and standby power switch QF2, and remove the air filter in the middle.
- Remove the cable terminals from the T/H sensor.
- Pull out the T/H sensor upwards.Figure 10-4 Replacing the T/H sensor
Before installing the new T/H sensor, ensure that its DIP switch setting is consistent with that on the original T/H sensor. That is, the first toggle switch is ON, and the others are OFF.
- Install the new T/H sensor at the original position, and connect the cable terminals to the T/H sensor.
- Install the air filter.
- Power on the device.
- Tap Start on the home screen.
