Full Product Manual
Troubleshooting
3A6430C EN 33
Troubleshooting
1. Follow Pressure Relief Procedure, 
page 14, before checking or repairing.
2. Solutions at the beginning of each prob-
lem listed are the most common. 
3. Check everything in this Troubleshoot-
ing Table before you bring the sprayer 
to an authorized service center.
ti24021a
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Problem Cause Solution
Motor does not run:   
(verify sprayer is plugged in, and 
ON/OFF switch is on)
Pressure control is set at zero 
pressure.
Turn pressure control knob clockwise 
to increase pressure setting.
Electric outlet is not providing power. Test outlet with known working 
device.
Reset circuit breaker or replace fuse.
Find working outlet.
Reset building circuit breaker or 
replace fuse.
Extension cord is damaged. Replace extension cord. See page 5.
Sprayer electric cord is damaged. Check for broken insulation or wires. 
Replace electric cord if damaged.
Pump is seized    
(Paint has hardened in pump 
or
Water is frozen in pump.)
Turn ON/OFF switch off and unplug 
sprayer from outlet. 
If frozen do NOT try to start sprayer 
until it is completely thawed or it may 
damage the motor, control board 
and/or drive train.
Place sprayer in warm area for 
several hours. Check for free moving 
pump by removing shroud and 
spinning fan.
If not frozen, check for hardened paint 
in pump. If paint has hardened in 
pump.
If motor does not turn with pump 
removed, consult a Graco/ Magnum 
authorized retailer, distributor, or 
service center.
Motor or control is damaged. Consult a Graco/ Magnum authorized 
retailer, distributor, or service center.










