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Troubleshooting
SERVICE MAY BE PERFORMED ONLY BY AN EARTHLINKED
TECHNOLOGIES AUTHORIZED PROFESSIONAL HVAC OR
REFRIGERATION SERVICE PERSON. USE ONLY SAFE AND
APPROVED SERVICE TECHNIQUES.
IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION,
MAINTENANCE OR SERVICE CAN CAUSE 1) THE
EARTHLINKED
AND OR FAIL, 2) PROPERTY DAMAGE, INJURY OR DEATH.
EarthLinked® compressor units are equipped with the following three safety switches
that will turn the compressor off if the following limits are exceeded.
High Pressure Switch: Located between the compressor discharge port and the
reversing valve, the cut-out pressure is 600 psig. This is a manual reset switch.
Low Pressure Switch: Located between the ACC and the compressor suction port,
the cut-out pressure is 25 psig. This is an automatic reset switch.
Discharge Temperature Switch: Located at the compressor discharge, the cut-out
temperature is 214°F. This is a manual reset switch.
If you experience difficulties with the EarthLinked
the manual. It may be helpful to have another professional HVAC or refrigeration service person
review and check it with you.
Time and expense can be saved by taking a thoughtful and orderly approach to troubleshooting.
Start with a visual check: Are there loose wires, crimped tubing, missing parts, etc?
Compressor
After setting the remote (wall) thermostat system switch to the "OFF" position and the thermostat fan
switch to the "AUTO" position, proceed to check the supply voltage at (1) the line terminals to the
breaker/disconnect; 2) the system side of the breaker/disconnect, and 3) the line-side of the
transformer. Verify the proper voltage rating for the system. Reference Figure 39.
SD-410-QS (H) (06/15)
CAUTION!
®
SYSTEM OR COMPONENTS TO MALFUNCTION
IMPORTANT!
EarthLinked® Refrigerant System Safety Switches
®
system, please review the appropriate section of
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