Yamato DC401, Instruction Manual

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21
8. TROUBLESHOOTING
Troubleshooting Guide
Symptom Possible Causes/Solutions
Unit will not power on.

Power cable is not connected properly or securely.

Power failure in progress.

Main power switch (ELB) is
“OFF”
Temperature does not fall.

Cooling fins are clogged with dust or debris.

Too many samples are being processed at once.

External temperature exceeds 30°C.

Cooling vent(s) are obstructed.
Error lamps
Error symptom Cause Remedy
Refrigeration
error lamp on
Refrigeration system
overload

Turn power off immediately, eliminate error source
(refer to "Trouble Shooting"
– “temperature does not
fall
”, above) and restart after 5 minutes.

If lamp stays lit after restart, call for service.
If problem persists, turn off power immediately, disconnect power cable and call for service.