Motor Control Diagnostic Codes; Alarms; Warnings; E21: No Component A Transducer - Graco Reactor H-25 Series 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
(component A)
22 No transducer
(component B)
23 High fluid pressure
24 Pressure imbalance
27 High motor temperature
30 Momentary loss of
communication
31 Pumpline reversing switch
failure/high cycle rate
99 Loss of communication
312063Z
to clear. A
.
Alarm (A) or Corrective
Warning (W) Action
page
A 11
A 11
A 11
A/W (to 11
select, see
page 31)
A 13
A 14
A 14
14
A
E21: No component A
transducer
1. Check transducer A connection at J3 on motor
control board, F . 5, page 32, and clean contacts.
IG
2. Reverse A and B transducer connections. If error
moves to transducer B (E22), replace transducer A,
Transducers, page 33. If error does not move,
replace motor control board, Motor Control Board,
page 31.
E22: No component B
transducer
1. Check transducer B connection at J8 on motor
control board, F . 5, page 32, and clean contacts.
IG
2. Reverse A and B transducer connections. If error
moves to transducer A (E21), replace transducer B,
Transducers, page 33. If error does not move,
replace motor control board, Motor Control Board,
page 31.

E23: High fluid pressure

1. Relieve pressure. Verify low pressure with analog
gauges. Turn main power OFF
. If error persists, do checks below.
2. If pressure imbalance is set to Warning instead of
Alarm (see page 31), an E23 will occur. See E24:
Pressure imbalance for causes and checks.

E24: Pressure imbalance

NOTE: Upon initial start-up this diagnostic code will not
cause an alarm for 2 minutes.
NOTE: If the pressure difference between components
A and B exceeds 500 psi (3.5 MPa, 35 bar), an E24 will
occur. This default value is adjustable; see the operation
manual.
Motor Control Diagnostic Codes
then ON
11