Parker SPL040 - Troubleshooting; Fault Diagnosis Chart

English
SPL040-060
4 / 4
7 Troubleshooting
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FAULT
CAUSE
REMEDY
Cooling air outlet too
high / High dew point
Overload protector
(SK/HT) tripped
Compressor noisy
Excessive
current
consumption
High pressure drop on
air side
High refrigerant
discharge
pressure
Condenser dirty
Ambient
temperature over
122°F (50°C)
Compressor
components
perished
Condenser dirty
Heat exchanger fouled
with debris
Fan pressure switch (PV)
calibration
error or
damaged
Clean
condenser
Reduce
temperature
Repair or
replace
compressor
Clean
condenser
Replace
pressure switch
Seek external as-
sistance
Ice formation on evapo-
rator (low evaporation
pressure)
By-pass air  ow keep-
ing air inlet open. Open
condensate drain valve
manually.
Restart appliance checking
setting of expansion
valve.
Condenser
dirty
Fan does
not work
Replace
fan
Clean
condenser
Clean heat ex-
changer (blow com-
pressed air in opposite
direction to operating
air  ow). Fit/renew
pre lter
Fan does
not work
Compressor
winding insulation
partially perished
(compressor
too hot)
Repair
fan
Fan does not work
Excessive
thermal load (compressor
head too hot)
Reduce
compressed air
quantity or air
temperature
Repair
fan
Insu cient
refrigerant: repair any
leaks and recharge the
circuit
Low current
consumption
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