Temperature Thermistor Abnormality - Hitachi RCUE40AG1-400AG1 Service Manual

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[] [] [] [] [][]~ [] Temperature Thermistor Abnormality
This alarm code is indicated when the thermistor resistance is out of range.
(Water Temperature Thermistor: 240 Ω ≤ Resistance ≤ 39 kΩ)
(Ambient Temperature Thermistor: 240 Ω ≤ Resistance ≤ 600 kΩ)
[] Inlet Water Temperature Thermistor Abnormality
[] [] [] Outlet Water Temperature Thermistor Abnormality
[] Ambient Temperature Thermistor Abnormality
Is connector on the printed
circuit board for CPU (PCBc)
correctly connected?
Pull out connector and
measure thermistor resistance.
Is resistance correct?
Thermistor
resistance
(KΩ)
No
Yes
No
Yes
[] [] []
[]~ []
[]
Temperature (°C)
Thermistor for Water Temperature
characteristics
TROUBLESHOOTING
Plug, Wiring, Repair
Replace thermistor
Replace printed circuit board
for CPU (PCBC)
Thermistor resistance
(KΩ)
1
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