ITW Dynatec DYNAMELT D15 Series Technical Documentation Manual page 160

Page 7-26 Troubleshooting
Revised 10/14
Problem
Aux (No.) Overtemp
AUX Power PCB
Possible Cause
1. Aux tolerance (hi/ low)
setpoints incorrectly
programmed.
2. Aux solid state relay is
inoperative.
3. Aux sensor circuit
inoperative.
D SERIES V6 DCL ASU Manuals
Solution
1. Re-program tolerance to allow a
larger deviation.
2. Use a clamp-on ammeter to monitor
Aux current on AUX Power PCB. If
Aux current does not cycle on and off,
then relay is inoperative and must be re-
placed.
3. a. Visually examine Aux socket
connections. Verify that pins are
properly seated. If pins or plug hous-
ings are damaged, repair or replace
hose. If socket is damaged, repair or re-
place harness.
b. If Aux-to-ASU plug and socket are
okay, Aux may have intermittent short
or open circuit. Repair or replace Aux,
Aux harness or solid state relay as
appropriate.
c. If Aux sockets and cables to ASU
plugs and sockets are okay, Aux
sensor may have an intermittent short
or open circuit. Examine connections
at the Aux device and monitor Aux
sensor resistance with an ohmmeter
while flexing sensor leads. Repair or
replace an inoperative sensor.
ITW Dynatec