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Series CE7000, CE8000 and CE9000
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Troubleshooting Guide for New Installations
SYMPTOM CAUSE SOLUTION
Unit fails to start - Motor
makes no noise
Insufficient power to
compressor
Source electric to the compressor is either the incorrect voltage,
insufficient wire size to carry the load, the fuse box or breaker box is not
sufficient to carry the load requirements to the compressor�
Unit wired incorrectly Any wiring other than what is stated in the manual could cause a
malfunction (see Wiring Section)�
Wrong voltage supplied to
unit
Make sure voltage is correct with the motor wiring (see Wiring Section)�
Loose electrical connections The entire electrical system should be checked by a certified electrician�
The incoming wires and the compressor electrical connections should
be checked� Loose connections will cause malfunctions�
Wrong size wiring Check that wire size is rated for the current of the compressor� State and
local codes vary widely and need to be checked before installation�
Blownfuseand/ortripped
breaker
The breaker and fuses required for this unit must be time delay�
A tripped breaker or blown fuse may result from a direct short to
ground, high current draw, improper wiring, incorrect fuse or breaker
size and/or type� This needs to be evaluated by a service center or
certified electrician�
Starter overload tripped Check and reset if necessary� If the overload trips after the initial reset,
refer to the section of the manual that covers this issue�
Low oil level Units equipped with a Low Oil Guard must have proper oil level to
operate� If oil level is low, add more oil� Unplug the compressor to reset
the relay for the low oil switch (see Lubrication section)�
Unit fails to start - Motor
hums
Unit wired incorrectly Any wiring other than what is stated in the manual could cause a
malfunction (see Wiring Section)�
Wrong voltage Make sure voltage is correct with the motor wiring (see Wiring Section)�
Loose electrical connections The entire electrical system should be checked by a certified electrician�
The incoming wires and the compressor electrical connections should
be checked� Loose connections will cause malfunctions�
Motor reset button trips
or reset trips on starter
Unit wired incorrectly Check voltage, wire size, etc� This problem needs to be evaluated and
corrected (see Wiring Section)�
Wrong voltage Make sure voltage is correct with the motor wiring (see Wiring Section)�
Wrong size wiring Check to make sure wire size is rated for the current of the compressor�
Check that wire size is rated for the current of the compressor� State and
local codes vary widely and need to be checked before installation�
Unit starts but does not
get to full speed
Insufficient power to
compressor
Source electric to the compressor is either the incorrect voltage,
insufficient wire size to carry the load, the fuse box or breaker box is not
sufficient to carry the load requirements to the compressor�
Loose electrical connections The entire electrical system should be checked by a certified electrician�
The incoming wires and the compressor electrical connections should
be checked� Loose connections will cause malfunctions�
Unit does not make any
or very little air
Drainvalveopen Make sure the drain valve at the bottom of the tank is closed�
Air leak Check the entire system for leaks, including the compressor unit and
any piping attached to the compressor
Restricted or blocked intake Make sure that the air intake of the compressor is not blocked in any
way�
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