Graco Reactor E-20 AH9030 [22/76] Primary heaters a and b

Graco Reactor E-20 AH9030 [22/76] Primary heaters a and b
Troubleshooting
22 312066ZAF
Primary Heaters (A and B)
Before performing any troubleshooting procedures:
1. Perform the Pressure Relief Procedure, page 25.
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 10.
Signal failure from thermocouple. See E04: Fluid Temperature
Sensor (FTS) or thermocouple
disconnected, page 12.
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 page 43
for illustration.
Failed heater element. See Primary Heaters, page 22.
Signal failure from thermocouple. See E04: Fluid Temperature
Sensor (FTS) or thermocouple
disconnected, page 12.
Thermocouple wired incorrectly. See E04: Fluid Temperature
Sensor (FTS) or thermocouple
disconnected, page 12. Power up
zones one at a time and verify that
temperature for each zone rises.
A
B

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