Graco E-Flo iQ - Error Code Reference

Troubleshooting
333587B 55
Error Codes
Error Location Type Error Name
Error
Description
Cause Solution
A1__ AMZ Alarm Low Current
H_Z_
Heater current
is below the
minimum
allowed value
Fault heater
element
Check heater resistance and resistance to
ground. Replace faulty heater.
A2__ AMZ Advisory Low Current
H_Z_
Heater current
is below the
minimum
allowed value
Fault heater
element
Check heater resistance and resistance to
ground. Replace faulty heater.
A3__ AMZ Alarm High Current
H_Z_
Heater current
exceeds
maximum
allowed value
Heater element is
defective
Replace heater element.
Heater element is
shorted
Check wiring to the heater element to ensure
no bare wires are touching and that no wires
are shorted to ground.
A4J_ Driver Alarm High Motor
Current P_
Motor current
exceeds
maximum
allowed value
Encoder
malfunction
Replace encoders.
Short circuit of
motor wiring
Check wiring to the motor to ensure no bare
wires are touching and that no wires are
shorted to ground.
Motor not able to
rotate
Check that motor shaft rotates freely.
Flow rate is too
large for the motor
to drive the pumps
at the operating
pressure
Reduce the outlet flow rate.
A4N_ Driver Alarm High Motor
Current P_
Motor current
exceeds
maximum
allowed value
Encoder
malfunction
Replace encoders.
Short circuit of
motor wiring
Check wiring to the motor to ensure no bare
wires are touching and that no wires are
shorted to ground.
Motor not able to
rotate
Check that motor shaft rotates freely.
Faulty circuit board Replace motor control circuit board.
A4__ AMZ Alarm High Current
H_Z_
Heater current
exceeds
maximum
allowed value
Heater element is
defective
Replace heater element.
Heater element is
shorted
Check wiring to the heater element to ensure
no bare wires are touching and that no wires
are shorted to ground.
A7__ AMZ Alarm Unexpected
Current H_Z_
Heat current
has an
unexpected
current flow
Unexpected
Current flow to the
heat element
Fault heater element. Check heater
resistance and resistance to ground.
Replace heater element.
Faulty AMZ; replace AMZ.