Specification
Page 38mrcool.com
Test Run
DOUBLE-CHECK PIPE CONNECTIONS
IF AMBIENT TEMPERATURE IS BELOW 
63°F (17°C)
THANK YOU
5.  After the Test Run is successfully complete, and 
you confirm all check points in List of Checks to 
Perform have PASSED, do the following: 
 a.  Using remote control, return unit to normal 
operating temperature.
 b.  Using insulation tape, wrap the indoor refrigerant 
pipe connections that you left uncovered during the 
indoor unit installation process.
Fig. 10.1
Manual control button
During operation, the pressure of the 
refrigerant circuit will increase. This may 
reveal leaks that were not present during your 
initial leak check. Take time during the Test 
Run to double-check that all refrigerant pipe 
connection points do not have leaks. Refer to 
Gas Leak Check section for instructions.
You can’t use the remote controller to turn 
on the COOL function when the ambient 
temperature is below 63°F. In this 
instance, you can use the MANUAL 
CONTROL button to test the COOL 
function.
1.Lift the front panel of the indoor unit, 
and raise it until it clicks in place.
2.The MANUAL CONTROL button is 
located on the right-hand side of the 
unit. Press it 2 times to select the COOL 
function. See Fig.10.1
3.Perform Test Run as normal.
Thank you for purchasing a MRCOOL 
ductless mini-split heating and air 
conditioning product. 
MRCOOL is a young, family-owned 
company, so we are truly thankful you 
trusted us with your business. Should you 
need any technical support or just have 
questions about your MRCOOL product, 
please don’t hesitate to call us at 
270-366-0457.
And if you can spare a few minutes today, 
a review of your new MRCOOL
® 
product on 
the partner site where you purchased it 
would really help us out. Real reviews 
from actual customers like you are 
invaluable to a growing company like ours. 
Again, thanks for being a valued customer!










