Graco Reactor A-25 Repair Parts page 15

PROBLEM
Hose display reads 0A on startup.
Erratic display; display turns on and
off.
Display buttons do not work properly;
cannot get out of an operation.
Red stop button does not work.
No heat in any zone.
No heat in A or B zones.
Low heat in A or B zones.
309813B
CAUSE
FTS not installed and
Cable not grounded.
Extension cable too long.
Broken membrane switch.
Ribbon cable disconnected or bro-
ken.
Broken button (fused contact).
Loose wire.
Red stop button circuit open.
Circuit breaker(s) tripped.
Heat turned off.
Temperature control alarm.
Defective heater.
Loose connectors or wire nuts.
Failed temperature control board.
A and B temperature setpoints too
low.
Flow too high.
Defective heater.
Loose connectors or wire nuts.
Low voltage.
Overheated temperature control
board.
Fluid too cold.
SOLUTION
Install FTS (see operation manual),
zone off. or adjust current to desired setting.
Ground cable, page 32.
Must not exceed 100 ft (30.5 m).
Replace, page 32.
Connect cable, or replace.
Replace, page 32.
Check connections, page 32.
Check button connections. See page
32 and electrical diagrams.
Reset breaker CB3 or CB4, page 18.
A
Press or
keys.
Check temperature displays for diag-
nostic code, page 12.
Replace, page 22. Check resistance.
Check connections.
Open cabinet. Check if board LED is
blinking. If not, check power wiring
connections to ensure board has
power. If board has power and LED is
not blinking, replace board, page 20.
Check setpoint. Increase if neces-
sary.
Use smaller mix chamber. Decrease
pressure.
Replace, page 22. Check resistance.
Check connections.
Check that power supply meets
requirements.
Check fan operation.
Check if door is open; close.
Check that cooling holes are not
clogged or obstructed.
Preheat fluid.
Troubleshooting
B
zone
15