Hitachi ZW 120-6 Operator's Manual page 63

 If auto regeneration did not complete, an aftertreatment
device regeneration request will blink on the monitor. (Refer
to the page 1-13) Perform manual regeneration following
the specified procedure. (Refer to the page 1-62)
 When the machine is operated without performing manual
regeneration, the aftertreatment device may be damaged.
Immediately move the machine to a safe area and perform
manual regeneration.
 If approximately 48 hours have passed without
regeneration being carried out, the engine trouble alarm
will be displayed on the monitor (Refer to the page 1-62).
Consult your nearest authorized dealer.
 Both auto and manual regenerations restore
aftertreatment device function. It is not a malfunction.
 White smoke may be emitted for several minutes after the
engine starts, this is not a malfunction.
OPERATOR'S STATION
1-5