SiUS181631EA Troubleshooting for Branch Provider (BP) Unit
Troubleshooting 221
6.3 Branch Provider (BP) Liquid or Gas Pipe Thermistor
Abnormality
Error Code
J0
Method of Error
Detection
Error Decision
Conditions
When the BP liquid or gas pipe thermistor has short circuit or open circuit
Supposed
Causes
îš„
Defective BP liquid or gas pipe thermistor
îš„
Incorrect connection of BP liquid or gas pipe thermistor
Troubleshooting
Refer to Thermistor Resistance/Temperature Characteristics table 1 on page 267.
NO
YES
Replace the thermistor or
the thermistor assembly.
Replace the BP unit PCB.
(R17944)
Disconnect the thermistor
connectors from the BP unit
PCB and measure the
resistance.
Is the resistance
normal?
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
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