5
AB-5965
Troubleshooting
Problem… Check…
Action…
- No output
generated
- Unstable output
- Check loose
connection
- Check Incorrect
wiring
- Check supply
voltage
- Check sensor
damage
- Re-connect the wire
- Replace sensor
- Slow response
- Error in output
- Check the sensor
for water leakage or
condensation
- Check the installed
location
- Check the dust.
soil.
- Remove cover
Dry the unit with no
power.
- Refer to the
Installation
instructions
- Clean the cover
- Replace the sensor
- Humifity one point
adjustment
3) Humidity one point adjustment
When you find a calibration error in the humidity
sensor, re-calibrate the sensor using the adjustment
volume (VR1, VR2) located on the circuit board. The
output value is increased by turning this volume in
clockwise direction and decreased by turning it
counterclockwise. Use refelenced humidity meter of
adequate accuracy. A digital multimeter is
recommended to check the output voltage.
Parts Identification of Adjustment volume
Cautions
1. After unpacking, age the transmitter in the ambient
atmosphere for at last 24 hours.
2. To calibrate and adjust, take care the heat from
human body or appliances.
Fine adjustment volume (VR1)
Temperature element
Humidity element
Rough adjustment volume (VR2)
