Troubleshooting
Error
Code
Error
Location
Type
Name
Cause
Solution
Wiring problem.
Check wiring between
HPTCM and contactor.
Look for shorted wire
between HPTCM and
contactor terminals A1 and
A2.
A4CH
Hose
ALARM
High Relay
Current Hose
Shorted contactor.
Measure resistance
between A1 and A2
terminals. The resistance
should be about 289Ω.
If contactor is measuring
less than 100Ω, then the
contactor is shorted and
should be replaced.
A4CM
MCM
ALARM
High MCM
Current
MCM is drawing too
much current from the
system.
If problem continues
replace MCM. See
Replace Motor Control
Module (MCM), page 86
.
Short circuit in booster
heater wiring.
Check wiring for touching
wires.
A4DA
A4DB
Boost A
Boost B
ALARM
High Heater
Current
Bad heater.
Measure resistance of
heater(s), replace if
needed. See
Repair
Booster Heater, page 68
.
Check continuityof
transformer windings,
normal reading are about
0.2Ω on both primaryand
secondary. If reading is
0Ω replace transformer.
A4DH
Hose
ALARM
High Heater
Current
Short circuit in hose
wiring.
Check for shorts between
the primarywinding and
the support frame of the
transformer.
3A1706K
15
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Summary of Contents for Reactor E-30i
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