Hitachi CHROMASTER 5160 Instruction Manual page 365

4.5 Troubleshooting
Symptom
5. Leak error occurs.
Cause
1) Liquid has
leaked.
2) "Contaminant"
has stuck to leak
sensor.
4 - 20
Judgment/Check
Visual check
Visual check
(cont'd)
Remedy
Wipe off the liquid that has
leaked in drain receiver.
Wipe off the liquid that has
adhered to leak sensor.
Wipe off "contaminant"
from the leak sensor.