8301-089 Outdoor Temperature Sensor Troubleshooting; Figure 74 8301-089 Sensor: Temperature Probe Troubleshooting - Bard MEGA-TEC W180B Service Instructions Manual

8301-089 Outdoor Temperature Sensor
Troubleshooting
To verify sensor operation:
1. Remove lid from outdoor temperature/humidity
sensor.
2. Remove wire nuts from green and white wires (see
Figure 73).
3. Use a temperature probe (preferred method) or
local weather data to find ambient temperature
conditions.
FIGURE 74
8301-089 Sensor: Temperature Probe Troubleshooting
4. Using an ohmmeter or resistance mode on a
multimeter, measure resistance across white leads
leading to the temperature sensor (see Figure 74).
5. Cross reference readings with Table 13 on page 50.
A. If readings are consistent with reference
temperature, check wiring or offset in PLC if
outdoor temp value on PLC does not match.
B. If readings do not match, replace sensor.
Manual 2100-749
Page 49 of 68