Graco 3A1705J A4NM MCM Alarm, A7CH, A7DA, A7DB, A7DH, A8DA, A8DB, A8DH

Troubleshooting
Error	Error	Type	Name	Cause	Solution
Code	Location
A4NM	MCM	ALARM	High Motor	Short circuit of motor	Check wiring to the motor
			Current	wiring.	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.
				Chemical pump is stuck	Repair or replace chemical
					pump. See system repair
					manual.
A7CH	Hose	ALARM	Unexpected	Shorted HPTCM.	Replace Module. See
			Relay Current		system repair manual.
A7DA	Boost A	ALARM	Unexpected	Shorted LPTCM.	Replace Module. See
			Heater Current		System Repair manual.
A7DB	Boost B
A7DH	Hose	ALARM	Unexpected	Turned off main power	Turn off heat and motor
			Heater Current	switch with heaters and	power at ADM before
				motor ON.	turning off the main power
					switch.
				Turned on hose circuit	Turn on circuit breaker
				breaker with hose heat	with hose heat off.
				on.
				Failed to power off after	Power off after software
				loading software.	downloaded.
				Shorted HPTCM.	Replace Module. See
					system repair manual.
A8DA	Boost A	ALARM	No Heater	Tripped circuit breaker.	Visually check circuit
A8DB	Boost B		Current		breaker for a tripped
					condition.
A8DH	Hose			Loose/broken	Check heater wiring for
				connection.	loose wires.

76 3A1705J