User's Manual
Motor Control Diagnostic Codes
12 313540G
Motor Control Diagnostic Codes
Motor control diagnostic codes E21 through E27 appear
on pressure display.
There are two types of motor control codes: alarms and
warnings. Alarms take priority over warnings.
Alarms
Alarms turn off Reactor. Turn main power OFF
then ON to clear.
NOTE: Alarms can also be cleared, except for code
23, by pressing .
Warnings
Reactor will continue to run. Press to clear. A
warning will not recur for a predetermined amount of
time (varies for different warnings), or until main power
is turned OFF then ON .
E21: No component A
transducer
1. Check transducer A connection at J3 on motor con-
trol board, page 33, and clean contacts.
2. Reverse A and B transducer connections. If error
moves to transducer B (E22), replace transducer A,
page 12. If error does not move, replace motor con-
trol board, page 32.
E22: No component B
transducer
1. Check transducer B connection at J8 on motor con-
trol board, page 33, and clean contacts.
2. Reverse A and B transducer connections. If error
moves to transducer A (E21), replace transducer B,
page 12. If error does not move, replace motor con-
trol board, page 32.
E23: High fluid pressure
1. Relieve pressure. Verify low pressure with analog
gauges. Turn main power OFF then ON
. If error persists, do checks below.
2. If pressure imbalance is set to Warning instead of
Alarm (see page 32), an E23 will occur. See E24:
Pressure imbalance for causes and checks.
3. Ensure at least one pump is in the number 1 posi-
tion. See Setup section of Reactor H-VR Operation
manual 313539.
4. If error still persists, reduce hydraulic pressure.
Code Code Name Alarm (A) or
Warning (W)
Corrective
Action
page
21 No transducer (compo-
nent A)
A
12
22 No transducer (compo-
nent B)
A
12
23 High fluid pressure A
12
24 Pressure imbalance A/W (to
select, see
page 32)
13
27 High motor temperature A
14
30 Momentary loss of com-
munication
A
15
31 Pumpline reversing switch
failure/high cycle rate
A
15
99 Loss of communication A
15
Code Code Name Alarm (A) or
Warning (W)
Corrective
Action
page