Graco 3A1705J important safety instructions T8AE

Troubleshooting
Error	Error	Type	Name	Cause	Solution
Code	Position
T8AE	Heat	ALARM	Temperature Not	Low chemical supply	Recirculate heated chemical
T8BE	Exchanger		Rising Hx A (T8AE)	temperature.	back to drum in cold conditions
			Temperature Not		before spraying. Chemical
					below 32°F(0°C) at startup.
			Rising Hx B (T8BE)
				System stored below	Ensure ambient temperature is
				20°F(-7°C) causing slow	above 20°F(-7°C).
				control valve operation.
				Plugged filter in sight glass.	Clean or replace filter. See
				Indicated by consistent	system repair manual.
				low A and B temperature
				alarms.
				Coolant debris stuck in	Inspect and clean control valve.
				valve pilot hole or passages.	Repair or replace if necessary.
					See system repair manual.
				No coolant flow	Check coolant level. Check for
					coolant flow in sight glass.
					Ensure that the circulation
					pump has 240 VAC. If not,
					replace the circulation pump.
					See system repair manual.
				(T8AE only) J6 connector on	Reconnect J6 connector on
				load center “Heat Valves”	load center in centered location.
				location is not centered.
				Bad valve solenoid coil.	Turn on the manual valve
					switch (MV), on the load center,
					and see if the valve solenoid
					shifts. For coolant valve LED
					identification, see system repair
					manual. If solenoid does not
					shift, replace solenoid coil. See
					system repair manual.
				Valve solenoid not getting	Verify 12 VDC signal is at the
				12 VDC electrical signal.	valve solenoid coil connector.
					All three valves are normally
					closed with power removed.
					See system repair manual
					for valve wiring harness
					identification diagram.
				Bad load center.	Red, blue, and green LEDs
					should light up on load center
					board. If not, replace load
					center. See system repair
					manual.
				A and B heat	See System Repair Manual for
				exchanger RTD cables	correct connection.
				cross-connected to splitter
				cable.

86 3A1705J