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7.5. Double-Check Pipe Connections

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.

• Usingremotecontrol,returnunittothenormal

operatingtemperature.

• Usinginsulationtape,wraptheindoorrefrigerantpipe

connectionsthatyouleftuncoveredduringtheindoor

unitinstallationprocess.

7.6. Ambient Temperature is Below 63°F

(17°C)

You can’t use the remote controller to turn on the COOL

function when the ambient temperature is below 17°C. In

thisinstance,youcanusetheMANUALCONTROLbutton

totesttheCOOLfunction.

• Liftthefrontpaneloftheindoorunit,andraiseituntilit

clicksinplace.

• TheMANUALCONTROLbuttonislocatedontheright-

handsideoftheunit.Pressitonetimetoselectthe

COOLfunction.

• PerformTestRunasnormal.

• Pushthebuttononceandunitisinautomode.

Temperatureissetat75°Fwithnochangingofset

temperature..

Manual control

button

Figure 17. Manual Button Location

Lennox MCA Series Service Manual

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