Miele T9800HRT service manual E9 Speed Range Error

Models: T9800HRT

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E9 – Speed Range Error

OVERVIEW

During normal run time operation the value stored during auto calibration is used to initially set the speed (e.g. target speed = 12 MPH, PWM ticks = Maximum PWM = 363). Once the speed stabilized the actual speed is monitored and if different than the target speed the PWM value is adjusted until the actual speed matches the target speed. If the PWM value is changed by more than the amount of ticks required to change 0.8 MPH and the actual speed does not match the target speed then an E9 error is flagged. This error indicates the motor controller system is unable to maintain the target speed.

E9 Error

Before cycling power inspect the

motor controller for error

MotorY controller error

N

Start PWM ½ MAX test

Measure speed and compare to value displayed in time window

Record the error

code from the

motor controller

Check for free movement of belt roller movement

Cycle Power

Run auto

calibration

Done

OK

N

Perform steps outlined in speed

 

 

feedback issue

 

 

 

Y

 

Run Auto Calibration

 

 

 

 

 

Error

N

Perform steps outlined in

 

Gone

 

speed control issue

Y

 

 

Done

 

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Miele T9800HRT service manual E9 Speed Range Error