16
309226
Advanced Troubleshooting
General Problem: Excessive Pressure is Building Up
SPECIFIC PROBLEM
CAUSE
SOLUTION
Spray–Prime/Drain valve
actuates automatically,
relieving pressure
through drain tube.
Pressure control switch is worn.
Replace pressure control switch using
Pressure
Control Switch Kit
244266 for DX models or
244267 for XR models.
Water or paint entered pressure control switch
or shorted control board.
Clean out and/or dry out, and retry. Replace if
necessary using
Pressure Control Switch Kit
244266 for DX models or 244267 for XR models.
Control board has failed.
See
Control Board Diagnostics
on page 19, and
replace control board if damaged using
Control
Board Kit
245079 for DX models, 243228 for XR5
and XR7 models, or 243229 for XR9 models.