Yamato Neocool CF302L-A, Инструкция по эксплуатации, Страница: 34 / 47

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9. TROUBLESHOOTING
Error Codes
Unit has a self-diagnostic function built into the CPU board and a separate safety device, independent of
the CPU board.
The table below shows possible causes and measures to take when safety device is triggered.
[Error Codes]
If an abnormality occurs, the following error code and measured temperature are displayed alternately
on the screen, and operation stops. Confirm the error code, terminate operation and turn OFF (○) ELCB
immediately.
Display code Error description Possible causes & measures
Temperature sensor
error
(E01)

Controller failure

Temperature sensor failure (disconnection or short circuit)
 Temperature out of specification range.
Contact original dealer of purchase.
Temperature upper
limit error
Temperature lower
limit error (E06)  Circulating water temperature error
Unit detects abnormality and terminates operation when
the temperature reading rises over 60 °C or falls below
-25 °C,
Turn off the ELCB and wait until the liquid temperature
comes within the appropriate ranges: -20 to 30 °C, and
restart operation.
If unit does not reset, contact original dealer of purchase.
Refrigerator error
(E13)

Refrigerator overload

Refrigerator failure
Turn OFF (○) ELCB. Wait until refrigerator sufficiently
cools down, and then restart operation. Make sure that
the ambient temperature is lower than 35 °C.
Check intake dust filter and condenser fins for clogging,
and clean dust off if accumulated. See “Cleaning intake
dust filter.” (P.28) for cleaning method and precautions.
If unit does not reset, contact original dealer of purchase.
EEPROM error (E15)

Error in a storage element EEPROM on the controller
board
Turn OFF (○) ELCB and restart unit.
If unit does not reset, contact original dealer of purchase.
・
Other warnings (displayed alternately with temperature reading)
Display alert Alert description Possible causes & measures
Temperature lower
limit alert (Lo)

Alert is displayed when temperature reading falls below -
22 °C, and continues operation. Contact original dealer of
purchase if temperature continues to significantly decrease
after alert occurs.
Temperature upper
limit alert (Hi)
 Alert is displayed when temperature reading exceeds
32 °C, and continues operation.

Unit terminates cooling operation when temperature
becomes 40 °C or higher, and operates cooling water
circulation operation according to the setting of "PUP" in
the user setting.
Refrigerator may be overloaded and unit may perform
abnormal stop to protect refrigerator. Always operate unit
in the proper liquid temperature range of -20 to 30 °C.
When abnormal stop occurs, turn OFF (○) ELCB and wait
until liquid temperature falls sufficiently, then start it up
again. If problem persists, contact original dealer of
purchase for assistance.