COOL BOSS CB-20SL, Installation And Operation Manual, Page: 30 / 36

Cool Boss Evaporative Air Cooler
30
P/N 5900275 — January 2022 — Rev. A
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.
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.
Media is clogged with dust or
blocked by an object.
Brown-out or low voltage.
– Check for blockage and remove.
– Clean the Media.
– Repair fan.
– Correct voltage supply issue.
Motor not working. Control Panel failure.
Motor failure
– Replace Control Panel.
– Replace motor.
Drain leaks. Drain Plug is not tight
Drain Plug is cross-threaded.
– Tighten Drain Plug.
– Replace Plug, if thread is damaged.
Fan dripping water. Water tubing is disconnected or
leaking.
Spray Bar may have come
loose from its mount.
– Check and tighten internal water
connections and tubing.
– Verify Spray Bar is secured above
the Media.
Remote does not work. Battery is inoperative.
Something is obstructing
receiver or remote.
Remote is out of range of the
receiver.
– Replace both batteries (AAA 1.5 V).
– Clear the obstruction.
– The remote must be within 32-ft. /
10 m and have a direct line-of-sight
to the Cool Boss Control Panel.
Louver swing function is
inoperative.
Louver synchronous motor is
inoperative.
Louver mechanical linkage is
broken.
– Replace synchronous motor.
– Replace damaged mechanical
linkage components.
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).