Float valve adjustment not correct.
Adjust float valve.
Continuous overflow of water.
Insufficient water in pan.
Adjust float level.
Pump runs but no water circulation.
Pump runs but pads lack water.
Water hoses blocked.
Check and clean out blockage.
Pump strainer blocked.
Clean pump strainer.
Auto Drain Valve malfunctioning
Check and remedy function.
Heavy pad deposits.
Clean or replace pads.
Pads not fitted correctly into pad
frames.
Make sure pads properly installed.
Water level too low, causing pump to
create fountain that is being sucked
into air stream.
Increase water level.
Incorrect or damaged pads fitted.
Replace with manufacturer's
recommended pads.
Loosen water hose connections.
Tighten all connections.
Water being blown into the building.
Water hose broken.
Cover not fitted on float valve.
Replace any cracked or broken hoses.
Install correct cover on float valve to
prevent spray.
Unpleasant odour.
New cooler pads.
Cooler located near source of
unpleasant odour.
Algae in pan water.
Pads remain wet after shut down.
Heavy pad deposits.
Drain pan, refill, run pump for a while.
Remove source of odour or relocate
cooler.
Drain pan, clean thoroughly with strong
cleansing agent, refill, change pads.
Run fan on "vent" for 10 minutes after
cooling cycle to dry pads out.
Clean or replace pads.
Belt slipping or wearing excessively.
Belt loose.
Pulleys out of line.
Worn belt.
Worn or warped pulleys.
Moisture on belt.
Tighten belt.
Align pulleys.
Replace belt.
Replace and re-align pulleys.
Stop any water leaks.
PROBLEM
PROBABLE CAUSE
SUGGESTED REMEDY
Installation Troubleshooting
21
EXV Evaporative Cooler
