SAWAFUJI ELECTRIC 0642 032 0310, Service Manual

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■ Error Message (Digital display of temperature controller)
Error message will be displayed if the voltage of the battery is low or in the event of any malfunctions - (see table below).
When error message is displayed, the unit will be on "standby mode". Operations will stop.
■ Trouble flowchart
※１ Ambient temp 25℃
※2 Ambient temp 25℃～-16℃
4. TROUBLE SHOOTING
ERROR CODE CAUSE SOLUTIONS SEE PAGE
Dot indication Push "MODE" button
⇒E-01 and current voltage display
Abnormal input DC voltage Check whether the power DC voltage is too low. -
E-04 Ambient temperature is too low Check whether the ambient temperature is too low -
E-05 Thermistor is shorted Replace the thermistor.
Page 14 【Check4】
E-06 Thermistor is open
9
Replace the thermistor.
E-07 Abnormal input DC voltage (too high) Check whether the power DC voltage is too high. -
Checking
Test result Judge
Fixing
Power supply &
Temperature
controller is
broken.
Replace the
power supply
&
Temperature
controller
.
Resistance of the thermistor.
(Power supply, temperature controller side)
Approx. 2kΩ-10kΩ ※2
0Ω
Replace the
thermistor.
Normal
Refrigerator is too cold.
(Can not be temperature
adjustment)
See page 11
【Check 5】
Error Message
Thermistor is
shorted.