Use and Care Manual

Page 45 mrcool.com
Refrigerant Piping Connection
Before Test Run
Test Run Instructions
The indoor & outdoor units are properly
installed
Unit is properly grounded
All wiring & electrical terminals are properly
covered & connected
The power voltage is the correct voltage for
the unit
Wall Hole Sleeve is packed airtight
All refrigerant piping connection points
DO NOT leak
Water drains properly from drain pipe
All piping is properly insulated
Ensure there are no obstacles near the inlet
and outlet of the outdoor or indoor units
Ensure all connection valves and King valves
on the outdoor condenser are fully opened
List of Checks to Perform Before Test Run
Test Run
10
You should perform the Test Run for at least 30
minutes.
1. Connect power to the unit. Then, turn on the main
power switch and allow the unit to warm up.
2. Press the ON/OFF button on the remote
controller to turn on the system.
3. Press the MODE button to scroll through the
following functions, one at a time:
• COOL - Select the lowest possible temperature
• HEAT - Select the highest possible temperature
4. Let each function run for 5 minutes and then
perform the checks listed in the table below.
Failure to perform the test run could result in
damage to the unit, property, or personal injury.
Only perform test run after you have ensure the
following steps have been completed:
• Electrical Safety Checks - Confirm that the
unit’s electrical system is safe and operating
properly.
• Gas Leak Checks - Check all refrigerant
piping/line set connections and confirm that
the system is not leaking.
• Confirm that the gas and liquid (high and low
pressure) stop valves are fully open. If the valves
are not fully opened before the system is
turned on, damage could occur.
A test run must be performed after the entire
system has been completely installed. Complete and
confirm the list of checks below before performing a
test run.
List of Checks to Perform During Test Run
•
•
•
Ensure the remote control functions properly
Ensure the louvers move properly and can be
adjusted using the remote control
Ensure the room temperature is being
registered/displayed correctly
Ensure the indicators on the remote control
and the display panel of the indoor unit
function properly
Check to see that the drainage system
unimpeded and draining smoothly
Ensure there is no vibration or abnormal
noise during operation
Ensure the manual buttons of the indoor air
handler function properly
Ensure refrigerant piping connections
DO NOT leak
Ensure there is no vibration or abnormal
noise during operation
Ensure the wind, noise, and water generated
by the unit DO NOT pose a safety hazard or
cause a disruption to your neighbors
For Indoor Unit
For Outdoor Unit
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
NOTE: If the unit malfunctions or does not
operate correctly, please refer to the
Troubleshooting section of this manual before
contacting technical support.