Motor Control Diagnostic Codes; Alarms; Warnings; E21: No Component A Transducer - Graco Reactor H-VR Repair And Parts Manual

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
warning will not recur for a predetermined amount of
time (varies for different warnings), or until main power
is turned OFF then ON
Code Code Name
21 No transducer (compo-
nent A)
22 No transducer (compo-
nent B)
23 High fluid pressure
24 Pressure imbalance
27 High motor temperature
30 Momentary loss of com-
munication
31 Pumpline reversing switch
failure/high cycle rate
313540L
.
to clear. A
.
Alarm (A) or Corrective
Warning (W)
A
A
A
A/W (to
select, see
page 33)
A
A
A
Code
99 Loss of communication
E21: No component A
transducer
1. Check transducer A connection at J3 on motor con-
trol board, page 34, and clean contacts.
2. Reverse A and B transducer connections. If error
moves to transducer B (E22), replace transducer A,
page 13. If error does not move, replace motor con-
trol board, page 33.
E22: No component B
transducer
1. Check transducer B connection at J8 on motor con-
trol board, page 34, and clean contacts.
2. Reverse A and B transducer connections. If error
moves to transducer A (E21), replace transducer B,
page 13. If error does not move, replace motor con-
trol board, page 33.

E23: High fluid pressure

1. Relieve pressure. Verify low pressure with analog
gauges. Turn main power OFF
Action
page
13
13
2. If pressure imbalance is set to Warning instead of
Alarm (see page 33), an E23 will occur. See E24:
13
Pressure imbalance for causes and checks.
14
3. Ensure at least one pump is in the number 1 posi-
tion. See Setup section of Reactor H-VR Operation
manual 313539.
15
16
4. If error still persists, reduce hydraulic pressure.
16
Motor Control Diagnostic Codes
Code Name Alarm (A) or
Warning (W)
A
. If error persists, do checks below.
Corrective
Action
page
16
then ON
13