Graco Reactor H-25 Series Repair And Parts

Troubleshooting
312063Z 17
Primary Heaters (A and B)
Before performing any troubleshooting procedures:
1. Relieve the pressure. See Pressure Relief
Procedure, page 26.
2. Turn main power OFF .
3. Allow equipment to cool.
Try the recommended solutions in the order given for
each problem, to avoid unnecessary repairs. Also,
determine that all circuit breakers, switches, and
controls are properly set and wiring is correct before
assuming there is a problem.
PROBLEM CAUSE SOLUTION
Primary heater(s) does not heat. Heat turned off.
Press or zone
keys.
Temperature control alarm. Check temperature display for
diagnostic code, page 8.
Signal failure from thermocouple. See E04: Fluid Temperature
Sensor (FTS) or thermocouple
disconnected, page 10.
Control of primary heat is abnormal;
high temperature overshoots or E01
error occurs intermittently.
Dirty thermocouple connections. Examine connection of
thermocouples to long green plug on
heater control board. Unplug and
re-plug thermocouple wires, cleaning
off any debris. Unplug and re-plug
long green connector.
Thermocouple not contacting heater
element.
Loosen ferrule nut (N), push in
thermocouple (310) so tip (T)
contacts heater element (307).
Holding themocouple tip (T) against
heater element, tighten ferrule nut
(N) 1/4 turn past tight. See
Thermocouple, page 36 for
illustration.
Failed heater element. See Primary Heaters, page 36.
Signal failure from thermocouple. See E04: Fluid Temperature
Sensor (FTS) or thermocouple
disconnected, page 10.
Thermocouple wired incorrectly. See E04: Fluid Temperature
Sensor (FTS) or thermocouple
disconnected, page 10. Power up
zones one at a time and verify that
temperature for each zone rises.
A
B

Graco Reactor H-25 Series Specifications

General

Brand	Graco
Model	Reactor H-25 Series
Category	Paint Sprayer
Language	English