Page 31 mrcool.com
Refrigerant Piping Connection
Before Test Run
Test Run Instructions
List of Checks to Perform PASS/FAIL
Outdoor (2):
Indoor (2):
No electrical leakage
Unit is properly grounded
All electrical terminals
properly covered
Indoor and outdoor units
are solidly installed
All pipe connection points
do not leak
Water drains properly
from drain hose
All piping is properly
insulated
Unit performs COOL
function properly
Unit performs HEAT
function properly
Indoor unit louvers rotate
properly
Indoor unit responds to
remote control
You should perform the Test Run for at least 30
minutes.
1. Connect power to the unit.
2. Press the ON/OFF button on the remote
controller to turn it on.
3. Press the MODE button to scroll through the
following functions, one at a time:
• COOL – Select lowest possible temperature
• HEAT – Select highest possible temperature
4. Let each function run for 5 minutes, and perform
each of the checks listed in the table to the right:
Only perform test run after you have completed
the following steps:
• Electrical Safety Checks – Confirm that the
electrical system is safe and operating properly
• Gas Leak Checks – Check all flare nut
connections and confirm that the system is not
leaking
• Confirm that gas and liquid (high and low
pressure) valves are fully open
9
Test Run
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