Troubleshooting for BP Unit
SiBE18-821_C
378
Troubleshooting
6.3
BP Liquid or Gas Pipe Thermistor Abnormality
Remote
Controller
Display
J0
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
When the BP liquid or gas pipe thermistor became short circuited or open.
Supposed
Causes
Defective BP liquid or gas pipe thermistor
Incorrect connection of BP liquid or gas pipe thermistor
Troubleshooting
Temperature
Resistance
–10°C
117 k
Ω
0°C
67 k
Ω
10°C
40 k
Ω
20°C
25 k
Ω
30°C
16 k
Ω
40°C
10 k
Ω
50°C
7 k
Ω
60°C
5 k
Ω
70°C
3 k
Ω
NO
YES
Replace the thermistor or
the thermistor assembly.
Replace the BP unit PCB.
(R13013)
Disconnect the thermistor
connectors from the BP unit
PCB and measure the
resistance.
Is the
resistance normal
referring to the table
below?
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
