Graco Reactor E-XP1 Troubleshooting Manual page 17

Reactor Error Code Trouble Shooting Guide
2) E04 on the hose heat display = While the unit was powered on, the Fluid
Temperature Sensor (FTS) lost communication with the temperature control
module.
 Check the electrical connections at the temperature control module.
o Looking at plug J1/ SENSOR B on the temperature control module, check and
see if pins 10, 11 & 12 are connected properly.
 Pin 12 = purple
 Pin 11 = red
 Pin 10 = silver (unshielded bare wires)
 Check the purple wire cable connections between all hose lengths with FTS
attached...
o Test with an Ohm meter between pins 10 (Silver unshielded bare wire), 11
Red wire, and 12 (Purple wire) of J1/SENSOR B connector disconnected from
the Temperature Control Module.
 Check the FTS operation by connecting the FTS directly to the Reactor.
o Locate the FTS.
Rev 2.6 (02/2014)
 Pins 11 to 12 approximately 35 ohms per 50' (15.2m) of FTS cable,
plus 10 ohms for the FTS.
 Pins 10 to 12 "OL" open loop > 100K ohms.
 Unplug the FTS electrical connection.
 Plug the Reactor end of the connector directly into the FTS electrical
connector to see if temperature data appears.
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