Slayer Single Group - Troubleshooting

Troubleshooting
Use this list of common symptoms to diagnose and resolve issues you experience
with your espresso machine. Slayer’s instructional videos are password-protected,
but can be accessed with the code “prebrewpressure”.
Symptom
Possible cause(s)
Instructional video
Bent gauges
Needle valve closed
vimeo.com/20345156
Brew tank cold; pre-heat
and steam tanks normal
Tripped thermostat or
faulty probes and/or PIDs
vimeo.com/20211342
Brew and pre-heat tanks
cold; steam tank normal
Faulty expansion valve
vimeo.com/20211342
All tanks cold
Tripped breaker and/or
white power switch off
vimeo.com/20219480
High pressure during pre-
brew
Coffee ground too fine
vimeo.com/20293720
Hissing from machine’s
rear-left
Leaking pressure release
valve
vimeo.com/20309382
Steam pressure low; brew
pressure normal
Faulty check valve
vimeo.com/20208524
Steam pressure low and/
or slow refill
Dirty probe
vimeo.com/20303179
Fast flow during pre-brew
Faulty switch and/or bad
connection to Molex
connector and/or missing
magnet
vimeo.com/20296673
Pump runs continuously
Loose switch and/or brew
actuator not in “off”
position
vimeo.com/20300413
Steam tank overfills
Faulty solenoid valve and/
or dirty probe and/or bad
connection to probe
vimeo.com/20306832
Dripping group screens
Worn o-rings at valve
insert and/or lower valve
stem
vimeo.com/19575557
Dripping steam wand
Worn steam cup seal and/
or o-rings
vimeo.com/20335705
Leaking group cap and/or
bayonet
Worn o-rings at upper
valve stem
vimeo.com/20218411
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