Troubleshootin
g
Error Location Type Description
Cause Solution
Fluid not in
system.
No fluid in the p
ump can cause a low
motor current
error. Verify:
• Fluid is in pumps.
• Inlet valves are open.
System cann
ot
build press
ure.
An outlet restriction does not exist.
Verify relief valves are in SPRAY
position.
Loose/brok
en
connection
.
Verify:
• Power connector is tightly
connected at MCM port #15.
Confirm wiring is not pulling
connector out of proper position.
• Cable insulation or wire is not cut
or frayed.
• Wires are tightly torqued in power
connector terminals. Test by
pulling on individual wires in power
connector.
• Cable not damaged at strain relief
on motor case.
A1NM
MCM
Low Motor
Current
Bad mot
or.
Discon
nect motor power connector at
MCM por
t #15. Measure resistances
at moto
r power connector.
Must read less than 8 ohms
resistance between each pair of
motor power leads (M1 to M2,
M1 to M3, M2 to M3). If any
readings greater than 8 ohms and
previous step ("Loose/broken power
connection or motor cable") was
verified, then motor may need
replacement.
Sho
rt circuit in
hea
ter wiring.
Che
ck wiring for touching wires.
A4DA Heater A
Hig
h Current A
Bad Heater.
Confirm resistance of heater. Heater
resistance should be 18–21 Ω
for each heater element, 9–12 Ω
combined for 10 kW systems, and
6-8 Ω for 15 kW systems. If out of
tolerance, replace heater element.
333024N 15
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