Sullair LS20 Operator's Manual And Parts List page 38

Section 7
TROUBLESHOOTING-SUPERVISOR
7.2 TROUBLESHOOTING GUIDE- SUPERVISOR CONTROLLER (CONTINUED)
MESSAGE
Main Motor Overload
(CONTINUED)
I/O Mod Com Error,
Com Mod Com Error,
Motor Mod Com Error
Oil Filter Maint., dP2 Oil
Filter High
P3 Oil Pressure Low,
dP3 Oil Pressure Low
P1 Sensor Fail, P2
Sensor Fail, P3 Sensor
Fail, P4 Sensor Fail, T1
Sensor Fail, T2 Sensor
Fail
dP1 Separator Maint.
P1-P2
Factory Setup Error
P1 Sump Pressure High
32
MODEL ENABLE
ALL ALWAYS
ALL ALWAYS
ALL ALWAYS
ALL ALWAYS
ALL ALWAYS
FLOODED ALWAYS
ALL ALWAYS
ALL ALWAYS
FLOODED ALWAYS
FLOODED ALWAYS
FLOODED ALWAYS
ALL ALWAYS
FLOODED ALWAYS
ALL ALWAYS
FLOODED ALWAYS
FLOODED ALWAYS
ALL ALWAYS
PROBABLE CAUSE
Main Motor Overload (cont.)
Module Network Error; The
Network that Connects the
Display Module, I/O Module and
Other Optional Modules is Not
Working Correctly
Pressure Across Oil Filter
Above 20 psi (1.4 bar) While
Running
Oil Pressure Low
Sensor or Wiring Failure
Pressure Across Separator High
The Factory Setup Information
Needs to be Reviewed for
Correct Values
Sump Pressure High (Poppet,
Spiral, Blowdown or Pneumatic
Valve Failed)
REMEDY
Check motor starter contacts for
proper operation.
Check line voltage, if low consult
power company.
Check wiring.
Replace module referred to in error
message, if problem persists
replace display module.
Oil filter clogged, replace oil filter.
Low ambient temperature, sump
heater may be required in ambients
below 40°F (4°C).
Sensor failure, check sensor, wiring
and tubing.
Oil filter clogged; replace oil filter.
Sump oil level low, replenish oil to
proper level.
Low ambient temperature, sump
heater may be required in ambients
below 40°F (4°C).
Oil pump may be required for
remote coolers.
Check sensor wiring.
Check sensor.
Plugged separator elements,
replace.
Pressure sensor failure, check sen-
sor wiring.
If problem persists replace
Supervisor.
Check valves.
Solenoid valves, check operation
and wiring.
Pressure regulator, check adjust-
ment and operation.