SRVO-089: OHAL2 alarm (track encoder overheat)

What it means

Line-tracking mirror of SRVO-067: the thermostat inside the conveyor encoder tripped.

Common causes

Ranked by what technicians most often find, most likely first.

1. Encoder running hot from duty/environment.
2. Failed encoder/thermostat if it alarms cool.

How to fix it

1. Let it cool fully and retest; persistent alarms on a cool encoder mean replacement per SRVO-067. Power-cycle to clear.