Graco 24C222 Instructions-Parts List Manual page 11

Alarm
Code Alarm Problem
A1AX Undercurrent
A7AX Unexpected Current
T9AX Invalid RTD Reading
T4CX PCB Overtemperature
V4AX High Line Voltage
V8AX No Line Voltage
3A0100H
Cause
Tripped circuit breaker.
Low power.
Cable unplugged/loose wire.
Circuit breaker not set for L2
and L3.
Faulty heater(s).
GFCI has been tripped.
Customer supplied main circuit
breaker tripped.
Incorrect zone type.
Shorted module.
Faulty RTD.
Faulty RTD connection/loose
wire.
Component not plugged in.
Overheated Temperature
Control Module.
Incoming line voltage is too
high.
Tripped circuit breaker.
GFCI has been tripped.
Cable unplugged/loose wire.
Alarm Codes and Troubleshooting
Solution
Visually check circuit
breaker for a tripped condi
tion.
Measure voltage across
input terminals of power
line filter. Voltage should
measure between 190 and
250 Vac.
Check for loose or discon
nected wires and plugs.
Visually check circuit
breaker for proper setting
of L2 and L3.
Measure resistance of
heater.
Visually check GFCI for a
tripped condition.
Measure voltage across the
disconnect switch. Voltage
should measure between
190 and 250 Vac.
Ensure zone is set for type
of hardware connected to
it.
If temperature for a given
zone raises when zone is
disabled, replace heat
module.
Measure resistance of RTD
and verify it is within valid
range.
Check for loose or discon
nected wires and plugs.
Ensure a component is
plugged into zone report
ing error. If nothing is
plugged in, disable zone.
Turn heat zone off. Wait a
few minutes. If the condi
tion does not clear on its
own, replace heater mod
ule.
Measure voltage across
disconnect switch. Voltage
should measure between
190 and 250 Vac.
Visually check circuit
breaker for a tripped condi
tion.
Visually check GFCI for a
tripped condition.
Check for loose or discon
nected wires and plugs.
Clear Alarm
Cleared from Heat Run
screen. See Appendix -
User Interface Display,
page 19.
Cleared from Heat Run
screen. See Appendix -
User Interface Display,
page 19.
Cleared from Heat Run
screen. See Appendix -
User Interface Display,
page 19.
Cleared from Heat Run
screen. See Appendix -
User Interface Display,
page 19.
Cleared from Heat Run
screen. See Appendix -
User Interface Display,
page 19.
Cleared from Heat Run
screen. See Appendix -
User Interface Display,
page 19.
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