User's Manual

Troubleshooting
38 3A2347T
A7D0 Unexpected
Current
Alarm Unexpected current flow to melter. Replace MZLP.
Faulty melter heater(s). Check heater resis-
tance and resistance to ground. Replace
faulty heater(s).
A7D_ Unexpected
Current, Gun X
Alarm Unexpected current flow to gun X. Faulty MZLP. Replace MZLP.
Faulty gun heater element. Check heater
resistance and resistance to ground.
A7D_ Unexpected
Current, Hose
X
Alarm Unexpected current flow to hose X. Faulty MZLP. Replace MZLP.
Faulty hose heat element. Check heater
resistance and resistance to ground.
A8D0 No Current
Melter
Alarm Power not getting to melter. Check fuses F1 and F2 on MZLP with daugh-
ter board.
Check J1 is plugged into MZLP with daughter
board.
A8D_ No Current
Hose X
Alarm Power not getting to hose. Check fuses F5 and F6 or F9 and F10 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 gun, the
heated hose electrical connector must be
plugged into channel 1 of the MZLP.
A8D_ No Current
Gun X
Alarm Power not getting to gun. Check fuses F3 and F4 or F7 and F8 on
MZLP that controls the error channel.
Check that electrical plug on hose is plugged
into back of MZLP.
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. Reading should be 0-1 ohm. Replace
hose if measurement is outside this range.
If system only uses one hose and gun, electri-
cal connector of the heated hose must be
plugged into channel 1 of the MZLP.
CAC_ Comm Error
Module
Alarm System not responding to ADM. System is not properly loaded with correct
software. Perform Software Update Proce-
dure on page 71.
Dial not set correct on MZLP. Set to 1 on
board with daughter board. Set to 2 on MZLP
without the daughter board.
CACX Missing DB Alarm System not acknowledging the
daughter board.
Defective MZLP daughter board. Replace.
Bad connection between daughter board and
MZLP board. Loosen daughter board,
re-seat, then secure.
Code Description Type Cause Solution