
4421 Tradition Trail ● Plano, Texas 75093 ● 972 -964-2700 ● 800-836-7472
URL: www.iscenclosurecooling.com ● Email: iscinfo@iscsales.com
SP-ENG-210-100-09 Rev 1.6 18 | P a g e
Troubleshooting Guide
The following guide provides a flow chart to identify a problem, determine the root cause and identify
the action needed to correct an issue.
Please Connect
Power Cord
Verify Power On/Off
Switch is on position
Verify input power
meets voltage
requirements as
shown in the UL label
If problem is still present contact
technical support
Unit Overheats /
Insufficient Cooling
Are Condenser &
Evaporator Fans ON?
Check for Faulty
Fan & replace
Is Evaporator Coil
Frozen / Iced?
Potential Bad
Evaporator Fan,
check for faulty
fan.
Contact Qualified Refrigeration Service
Technician to check Refrigerant Pressure. Unit
may have a refrigeration leak. If problem is not
resolved contact technical support.
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