1800 Hurd Drive ● Irving, Texas 75038 ● (972) 580-0200 ● (888) 580-0202 ● Fax (972) 580-0277
URL: www.thermal-edge.com ● Email:
SP-ENG-210-001-09 Rev 1.9
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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.
Unit Will Not Run
Is Unit
Connected?
YES
NO
Please Connect
Power
Verify Power On/Off
Switch is on position
ON
OFF
Toggle Switch
then Retry
Verify input power
meets voltage
requirements as
shown in the UL label
YES
If problem is still present contact
technical support
Unit Not Cooling
Is Compressor
On?
YES
NO
Is evaporator
Fan on?
YES
NO
Measure Temperature at Evaporator
& Verify Heat Load Requirements. Is
unit capacity adequate for internal
head load? Possible low refrigerant.
Unit Overheats /
Insufficient Cooling
Is Filter
Clean?
NO
Clean / Replace
Filter
YES
Are Condenser &
Evaporator Fans ON?
NO
Check for Faulty
Fan & replace
YES
Is Condenser
Coil dirty?
YES
Clean Coil
NO
NO
Is Evaporator Coil
Frozen / Iced?
YES
Potential Bad
Evaporator Fan,
check for faulty
fan.
NO
Contact Qualified Refrigeration Service
Technician to check Refrigerant Pressure. Unit
may have a refrigeration leak. If problem is not
resolved contact technical support.
