Graco 333586E, Installation Manual

Page: 47 / 102

Troubleshooting
333586E 47
Heat Control Box Troubleshooting
Platen Valve Kit Troubleshooting
Problem Cause Solution
System does not heat. Blown fuse. Replace fuse.
Over-temperature switch tripped. Measure over-temperature switch
resistance. It should read close to 0
ohms when at room temperature. If
open, replace over-temperature
switch.
Cable to over-temperature switch is
off or broken. Check connection of cable to
over-temperature switch both to main
board and to switch. If connection is
good, look for a break in the wire.
Electrical short. Check jumpers.
Check resistances on heater rods
and RTDs.
Check cable connections.
Disconnect switched OFF. Check disconnects.
Slow warm-up time. Low incoming voltage. Verify incoming voltage is 200V L-N
or 240V L-C.
Insufficient power supplied to sys-
tem. Connect system to a power supply
capable of maximum power per sys-
tem specification. All changes must
be performed by a qualified electri-
cian.
Zone Types set up incorrectly. Ensure Zone Types are set up cor-
rectly in the ADM.
Open heater. Verify resistance of heaters. See
Check Heater Resistance on page
37.
Problem Cause Solution
Material leak. Loose fitting connection. Ensure fittings are tight. See Parts
on page 61 for part identification.
Improper fitting used. Replace fitting. See Parts on page
61 for part identification.
System does not depressurize as
expected. Clogged hose or fittings. Flush or replace clogged pieces.
Valve does not open or close as
expected. Failed solenoid actuation. Replace solenoid.
Solenoid mufflers plugged. Replace solenoid mufflers.
No air to solenoid. Re-establish air supply to solenoid.