![background image](http://html1.mh-extra.com/html/graco/248921-310798d/248921-310798d_instructions-parts-manual_2251205009.webp)
Troubleshooting
310798D
9
No hose heat.
Loose hose electrical connections.
Check all hose connections. See
Test Hose Continuity, page 12.
Circuit breakers tripped.
Check CB1 and CB2.
Hose heat not turned on.
To turn on, press
.
To change from Stop mode to Run
mode, press
.
LED in upper right corner of display
will change.
To return to main menu, press
.
Temperature setpoint too low.
Check. Increase if necessary.
Maximum amp setting is too low.
Check connections to current sensor.
Increase current, page 8.
Hose length tap set too low.
Check and set to hose length being
used, page 5.
No voltage to transformer primary.
Replace phase controller (3).
No output voltage.
Replace solid state relay (2).
Low hose heat.
Temperature setpoint too low.
Check. Increase if necessary.
Flow too high.
Decrease pressure.
Hose heat requires more time.
Allow more time to preheat material.
Loose hose electrical connections.
Check all hose connections. See
Test Hose Continuity, page 12.
PROBLEM
CAUSE
SOLUTION