COOL BOSS CB-12SL, Installation And Operation Manual, Page: 28 / 36

Cool Boss Evaporative Air Cooler
28
P/N 5900274 — August 2022 — Rev. A1
Troubleshooting
⚠
WARNING This Evaporative Cooler uses electrical energy; if your organization has
Lockout/Tagout policies, make sure to implement them before performing any
Troubleshooting.
Issue Probable Cause Action to Take
Control Panel
inoperative.
No power.
Circuit Breaker open.
Control Panel component
failure.
– Check the power supply.
– Reset the circuit breaker.
– Replace the panel.
Unit not working. No power.
– Power cycle the unit on-off.
– Verify the power supply is
functional.
Fan not working or
moving slowly. Fan is stuck.
Fan is broken.
Brown-out or low voltage.
– Check for blockage and remove.
– Repair fan.
– Correct voltage supply issue.
Motor not working. Control Panel is not working.
Motor failure
– Replace Control Panel.
– Replace motor.
Drain leaks. Drain Plug is not tight
Drain Plug is cross-threaded.
O-Ring is missing
– Tighten Drain Plug.
– Replace Plug, if thread is ruined.
– Replace O-Ring.
Fan dripping water.
Water plumbing is
disconnected or leaking.
– Check internal water connections
and tubing.
Assistance with your Cool Boss is available from your dealer, by calling Cool Boss at
(805) 933-9970 , or by emailing support@coolboss.com . You may also contact Cool Boss for
parts replacement (please have the serial number and model number of your unit available).