Troubleshooting
Error
Code
Error
Location
Type Name Cause Solution
Short circuit of motor
wiring.
Check wiring tothemotor
to ensure no bare wires
are touching and that
no wires are shorted to
ground.
Motor will not rotate. Replace motor. See
system repair manual.
A4NM MCM ALARM High Motor
Current
Chemicalpump is stuck Repairor replace chemical
pump. See system repair
manual.
A7CH Hose ALARM Unexpected
Relay Current
Shorted HPTCM. Replace Module. See
system repair manual.
A7DA BoostA
A7DB BoostB
ALARM Unexpected
Heater Current
Shorted LPTCM. Replace Module. See
System Repair manual.
Turned off main power
switch with heatersand
motor ON.
Turn off heat and motor
power at ADM before
turning off the main power
switch.
Turned on hose circuit
breaker with hose heat
on.
Turn on circuit breaker
with hose heat off.
Failed to power off after
loading software.
Power off after software
downloaded.
A7DH Hose ALARM Unexpected
Heater Current
Shorted HPTCM. Replace Module. See
system repair manual.
Tripped circuitbreaker. Visually check circuit
breaker for a tripped
condition.
A8DA
A8DB
A8DH
Boost A
BoostB
Hose
ALARM No Heater
Current
Loose/broken
connection.
Check heater wiring for
loose wires.
76 3A1705J