DIAGNOSTIC STATUS CODES
TRANSISTOR PUMP CONTROL
Page
46
Revised May 2003
PUMP
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-124
A2 voltage is low (less than 88% of battery
volts).
This status code will be displayed when the A2 voltage is
less than 88% of battery volts and the pump line driver is
energized.
MEMORY RECALL
NO
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Pump
Controller
SYMPTOM
Control does not operate. Status code
may vary between code 123 and code 124.
Complete checks for code 124 and, if the
problem is not found, perform checks for
code 123.
POSSIBLE CAUSE
Defective pump line contactor. Contactor
power tips are failing to close due to:
·
Binding contactor tip assembly.
·
Defective pump contactor coil (see status
code 123).
Open motor circuit
·
Check for open circuit or loose
connection in the pump motor circuit
from the A1 connection to the A2
connection on the control.
P
U
MP
CO
NTRO
L
PLU
G
PL-
2
P2
P1
P18
P12
P19
P20
P21
PUMP CONTROL TEMP
P7
L
P17
ACCEL POT INPUT
*
*
*
S
PEED
2
S
PEED
1
*
SP
EED
3
*
SPE
ED
4
POWER CONNECTION
SUPPLIED BY CUSTOMER
*
KEY SW.
BATT (+)
P
*
FU4
FU2
LINE
CONTACTOR
*
*
A
R
M
A
T
URE
*
FI
E
LD
*
PUMP CONTROL
POWER CONNECTION
A1
A2
A1
A2
A2
A1
P
N
N
BATT (-)
PUMP
STATUS CODE
DESCRIPTION OF STATUS
CAUSE OF STATUS INDICATION
-127
Control logic card power supply is less
than 10 VDC.
This status code is displayed when the logic card
power supply is less than 10 volts.
MEMORY RECALL
YES
CORRECTIVE ACTIONS
TROUBLE-SHOOTING DIAGRAM
Circuits valid
for
Pump
Controller
SYMPTOM
Control will not operate.
POSSIBLE CAUSE
Discharged Battery
·
Check battery to insure proper state of
charge.
Loose connection at P1.
·
Insure that the wire connection at P1 is
tight.
Defective logic card
·
Replace control.
P
U
MP
CO
NTRO
L
PLU
G
PL-
2
P2
P1
P18
P12
P19
P20
P21
PUMP CONTROL TEMP
P7
L
P17
ACCEL POT INPUT
*
*
*
S
PEED
2
S
PEED
1
*
SP
EED
3
*
SPE
ED
4
POWER CONNECTION
SUPPLIED BY CUSTOMER
*
KEY SW.
BATT (+)
P
*
FU4
FU2
LINE
CONTACTOR
*
*
A
R
M
A
T
URE
*
FI
E
LD
*
PUMP CONTROL
POWER CONNECTION
A1
A2
A1
A2
A2
A1
P
N
N
BATT (-)