ITW Dynatec DYNAMELT D15 Series Technical Documentation Manual page 158

Page 7-24 Troubleshooting
Revised 10/14
Problem
Hose/ Head (No.)* Not
Heating
(Sensor Circuit Open)
ASU Socket and
Hose/ head Plug
Sensor
Heater
Plug
Sensor &
Heater
Hose/ Head (No.)*
Not Heating
(Sensor Circuit Shorted)
* Check each Hose/Head circuit on the system.
Possible Cause
1. Disconnection between
hose and ASU.
2. Hose sensor harness un-
plugged from Power or
AUX Power Module.
3. Hose/ Head sensor circuit
inoperative.
1. Debris at connection
between hose/ head and
ASU.
2. Debris at connection
between hose/ head
harness and Power or AUX
Power Module.
3. Hose/ Head sensor circuit
inoperative.
D SERIES V6 DCL ASU Manuals
Solution
1. Visually examine connector for proper
contact and seating. If pins or housings
are damaged, repair or replace hose or
hose harness (in ASU).
2. Verify that affected hose is properly
connected to Power or AUX Module.
Replace or repair damaged hose harness
as necessary.
3. Replace head sensor if resistance does
not comply with resistance table. Use hose
schematic to check hose sensor resistance
at ASU socket, repair or replace hose,
hose harness, Power or AUX Power Mod-
ule as appropriate.
1. Visually inspect hose plug and ASU
socket for cleanliness and proper contact
and seating of pins.
2. Visually inspect that the affected hose
plug at Power or Aux Power Module is
clean and properly installed.
3.Using the hose schematic, check hose
sensor resistance at ASU socket. An ohm-
meter can also be used to isolate a pinched
wire in the hose harness. When cause is
isolated, repair or replace sensor, hose,
hose harness, Power or AUX Power
Module as appropriate.
ITW Dynatec