Bp Liquid Or Gas Pipe Thermistor Abnormality - Daikin Super Multi Plus E-Series FTXG25EV1BW Service Manual

Troubleshooting for BP Unit
6.3

BP Liquid or Gas Pipe Thermistor Abnormality

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