TS20C USER MANUAL SECTION 7
120
Compressor Shuts Down With
Air Demand Present
Loss of control voltage Check incoming power
Low incoming voltage Check control fuses and wiring. Consult power
company. The Sulliar Supervisor™ will provide
indication of most maintenance problems if
control power has not been lost. Shutdowns
will occur upon a faulty condition or a bad
sender condition.
Excessive operating pressure Check maximum P2 pressure setting.
HIGH PRESS P1 display; Max P1 pressure
may be set too low. Consult factory for
recalibration.
Defective solenoid valve; solenoid valve
should cause Sullicon Control lever to move to
unload stop when the unload pressure setting
P2A is exceeded. Repair if defective.
Defective blowdown valve; blowdown valve
should exhaust sump pressure to 30 psig (2.1
bar) for integrated coolers; 50 psig (3.4 bar) for
remote coolers when maximum operating
pressure is reached. Repair if defective.
Open or shorted P1, P2, P3 or P4 sender
message; replace sender indicated.
Operating lever of inlet butterfly valve is loose
on valve shaft. Reposition the valve plate and
tighten lever set screw.
HIGH TEMP T1 or T3 Message
Displayed
Cooling air flow restricted; clean cooler and
check for proper ventilation.
Ambient temperature is too high; provide
sufficient ventilation.
Low fluid level; add fluid.
Clogged fluid filter; change the fluid filter
element as indicated by Supervisor™ control.
Thermal valve not functioning properly; replace
element.
Open or shorted T1 or T2 sender; check for a
short or open circuit to probe and correct
wiring.
Low fluid pressure (LOW
PRESSURE P3 DISPLAY)
Check fluid level.
Check for clogged fluid filter.
Cooling fan motor (FAN OL
display)
Check the cooling fan motor.
Table 7-1: Troubleshooting Guide
SYMPTOM PROBABLE CAUSE REMEDY
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