Code

Name

Causes

Possible Solutions

LT-1

Cooling Fan Maintenance Time

The cooling fan is at 90% of its expected performance life.

  1. Use the procedures in this manual to replace the cooling fan.

  2. Set o4-03 = 0 [Fan Operation Time Setting = 0 h] to reset the cooling fan operation time.
Note:

When the estimated performance life is expired, the terminal assigned to H2-01 to H2-03 = 2F [MFDO Function Select = Maintenance Notification] will be ON.