Service Manual
Bosch IDS 2.0
| 65
Bosch Thermotechnology Corp.
|
07.2021
Data subject to change
13.2 Pressure Transducer (PT)
Figure 39
Yes
No
Replace control board
Yes
No
Does voltage =
5V(DC)?
Does
gage measured
pressure value equal
value obtained from
graph ( 50psi)?
±
Yes
No service required
Is check point value
and measured
value withing 50 psi?
No
Restart system
Measure pressure at suction service
valve using gages. Write down value
to reference later.
Measure DC voltage between White
and Black wires at the CN16 on the
control board. Write down value
to reference later.
Replace pressure transducer
Press check point button on the
outdoor control board to check
suction pressure (Cooling - check
point #9, Heating - check
point #10). Write down
value for later reference.
Measure DC voltage between Red
and Black wires at the CN16 on the
control board
Use graph to determine pressure
value based on DC voltage
measurement. Write down value
for later reference.
Run unit in heating or cooling mode
CAUTION:
Be careful of static electricity when handling pressure
transducer, especially in dry weather.
white
Black
Red
GND
Vout
+5V
Pressure
Transducer
Make measurement
of 5V DC voltage
