User's Manual

Troubleshooting
333347F 41
A3MF High Fan Cur-
rent, Trans-
former
Devia-
tion
Transformer fan is greater than
600mA.
Replace transformer fan.
A4D0 High Current
Melter
Alarm Defective or shorted to ground on the
band heater or rod heater.
Measure resistance to ground between heater
leads. Should be a high reading.
A4D_ High Current
Hose X
Alarm Defective or shorted to ground on the
hose power wires.
Replace heated hose.
A4D_ High Current
Gun X
Alarm Defective or shorted to ground on the
heater rods in applicator manifold.
Replace applicator manifold.
A7D0 Unexpected
Current
Alarm Unexpected current flow to melter. Faulty melter heater(s). Check heater resistance
and resistance to ground. Replace faulty
heater(s). See Replace Heater Rod, page 64.
Replace MZLP.
A7D_ Unexpected
Current, Gun X
Alarm Unexpected current flow to applicator
X.
Faulty applicator heater element. Check heater
resistance and resistance to ground.
Faulty MZLP. Replace MZLP.
A7D_ Unexpected
Current, Hose X
Alarm Unexpected current flow to hose X. Faulty hose heat element. Check heater resis-
tance and resistance to ground.
Faulty MZLP. Replace MZLP.
A8D0 No Current
Melter
Alarm Power not getting to melter. Check fuses F1 and F2 on MZLP with daughter
board.
Check J1 is plugged into MZLP with daughter
board and J3 on AWB.
A8D_ No Current
Hose X
Alarm Power not getting to hose. Check fuses F5 and F6 (channels 1, 3, 5) or F9
and F10 (channels 2, 4, 6) on MZLP that the
error hose is connected to.
Check that electrical connector on the heated
hose is plugged into the MZLP.
Check continuity of pins C and D on electrical
connector at MZLP end of heated hose. See
heated hose manual for impedance measure-
ments. Replace hose if readings are too high.
If system only uses one hose and applicator, the
heated hose electrical connector must be
plugged into channel 1 of the MZLP.
A8D_ No Current Gun
X
Alarm Power not getting to applicator. Check fuses F3 and F4 (channels 1, 3, 5) or F7
and F8 (channels 2, 4, 6) on MZLP that controls
the error channel.
Check that electrical plug on hose is plugged into
back of MZLP and applicator is plugged into
hose.
Check continuity of hose pin A gun end to J on
MZLP connector end of hose and pin C on gun
end to pin A on the MZLP end of the hose. Read-
ing should be 0-1 ohm. Replace hose if measure-
ment is outside this range.
If system only uses one hose and applicator,
electrical connector of the heated hose must be
plugged into channel 1 of the MZLP.
A8MF No Fan Current,
Transformer
Devia-
tion
Power not getting to transformer fan. Verify that fan power cable is plugged into J7 on
the AWB.
Verify transformer fan is free of obstructions and
can spin freely.
Code Description Type Cause Solution