Temperature Sensor (T3,T4,T5,Th,T3L,Tf) - Bosch IDS 2.0 Service Manual

Service Manual

13.4 Temperature Sensor (T3,T4,T5,Th,T3L,Tf)

Is ambient temperature
below -4°F?
Satisfy tstat and wait in standby mode
for 10 - 15 minutes
Press check button to get
T3/T4/T5/Th/T3L/Tf temperature.
Write down temp value(s)
for later reference.
Power off unit at breaker
Unplug temperature sensor and
measure resistance at wiring harness
Is the corresponding
temperature from
the resistance value
±
chart 15°F from
check point data?
No
Replace sensor
Figure 41
Bosch Thermotechnology Corp. | 07.2021
Yes
Out of operating range.
No service required.
If you do not wait 10-15 minutes, your
temperature reference value will be
incorrect in the next steps.
Yes
No service required
If the resistance value is 0 (shorted) or
extremely high (open), replace sensor.
T3/T4/T3L Temperature Sensor
Temperature
Sensor
Locations
Bosch IDS 2.0 | 67
Data subject to change