Graco Reactor 2 H-30 Repair Manual page 17

Error Codes Codes
Error Error Codes
Note
When an error occurs be sure to determine the code before resetting it. If you forget which error code
occurred, see the Errors screen to view the last 200 errors, with date, time, and description.
Error Location
Error Error Location Location
A4DA Heater A
A4DB Heater B
A4DH Hose
A7DA Heater A
A7DB Heater B
A7DH Hose
334946C
Type Description
Type Type Description Description
High Current A
High Current B
High Current Hose
Unexpected Current
A
Unexpected Current
B
Unexpected Current
Hose
Cause Cause Cause Solution Solution Solution
Short circuit in Check wiring for touching
heater wiring. wires.
Bad Heater. Confirm resistance of
heater. Heater resistance
should be 18–21 Ω for
each heater element, 9–12
Ω combined for 10 kW
systems, 6-8 Ω for 15 kW
systems, and 4–6 Ω for
20 kW systems. If out of
tolerance, replace heater
element.
Short circuit in Check wiring for touching
heater wiring. wires.
Bad Heater.
Confirm resistance of
heater. Heater resistance
should be 18–21 Ω for
each heater element, 9–12
Ω combined for 10 kW
systems, 6-8 Ω for 15 kW
systems, and 4–6 Ω for
20 kW systems. If out of
tolerance, replace heater
element.
Short circuit in Check continuity of
hose wiring. transformer windings.
Normal readings are about
0.2Ω on both primary and
secondary. If reading is 0Ω
replace transformer.
Check for shorts between
the primary winding and the
support frame or enclosure.
Shorted TCM If error cannot be cleared
or regenerates consistently,
replace module.
Shorted TCM If error cannot be cleared
or regenerates consistently,
replace module.
Shorted TCM If error cannot be cleared
or regenerates consistently,
replace module.
Troubleshooting
17