Graco Reactor A-25 Repair Parts page 20

Troubleshooting
Heater
PROBLEM
Primary heater(s) does not heat.
Control of primary heat is abnormal;
high temperature overshoots or E01
error occurs intermittently.
20
CAUSE
Heat turned off.
Temperature control alarm.
Signal failure from thermocouple.
Dirty thermocouple connections.
Thermocouple not contacting heater
element.
Failed heater element.
Signal failure from thermocouple.
Thermocouple wired incorrectly.
SOLUTION
A
B
Press or zone
keys.
Check temperature display for diag-
nostic code, page 10.
See E04: Fluid Temperature Sen-
sor (FTS) or thermocouple discon-
nected, page 12.
Examine connection of thermocou-
ples 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.
Loosen ferrule nut (N), push in ther-
mocouple (361) so tip (T) contacts
heater element (358). Holding ther-
mocouple tip (T) against heater ele-
ment, tighten ferrule nut (N) 1/4 turn
past tight. See page 31 for illustra-
tion.
See Primary Heater, page 29.
See E04: Fluid Temperature Sen-
sor (FTS) or thermocouple discon-
nected, page 12.
See E04: Fluid Temperature Sen-
sor (FTS) or thermocouple discon-
nected, page 12. Power up zones
one at a time and verify that tempera-
ture for each zone rises.
3A1570L