DIAGNOSTIC STATUS CODES
TRANSISTOR PUMP CONTROL Page 52
January 1999
PUMP
STATUS CODE
DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-143
Pump Controller “motor current sensor”
input is too low.
This status code is displayed when the voltage at the
current sensor is greater than 0.1 volts with no current
flowing in the motor circuit.
MEMORY RECALL
NO
CORRECTIVE ACTIONS TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Pump
Controller
SYMPTOM:
No power to pump motor in control
range.
POSSIBLE CAUSE:
Control is defective.
•=Replace controller unit.
NO
GRAPHIC
FOR THIS
STATUS CODE
PUMP
STATUS CODE
DESCRIPTION OF STATUS CAUSE OF STATUS INDICATION
-144
Power Transistor (Q1) did not turn off
properly.
This status code is displayed when, during pump
control operation, the Q1 transistor fails to turn off.
This will result in a PMT condition.
MEMORY RECALL
YES
CORRECTIVE ACTIONS TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Pump
Controller
SYMPTOM:
With no pump contactor, control may
run continuously.
POSSIBLE CAUSE:
Control is defective.
•=Replace controller unit.
NO
GRAPHIC
FOR THIS
STATUS CODE
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