Carrier 40MBFAQ Service Manual
Also see for 40MBFAQ: Owner's manualInstallation instructions
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40MBFAQ: Service ManualManufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.30DIAGNOSIS AND SOLUTION (CONT.)PC 0L (Low ambient temperature protection)Description: This is a protection function. When the compressor is off, the outdoor ambient temperature(T4) is lowerthan -31F (-35C) for 10s, the air conditioner stops and displays the failure code.When the compressor is on, the outdoor ambient temperature(T4) is lower than -40F(-40C).for 10s, the air conditioner stops and displays a failurecode. When the outdoor ambient temperature (T4) is no lower than -25.6F (-32C) for 10s, the unit exits protection.EC 0d(Outdoor unit malfunction Diagnosis and Solution)Description: The indoor unit detect the outdoor unit is error.Recommended parts to prepare:• Outdoor unitTroubleshooting?Is the main boarddisplaying an error?,.WŽǁĞƌŽī͕ƚŚĞŶƌĞƐƚĂƌƚƚŚĞƵŶŝƚƚǁŽŵŝŶƵƚĞƐůĂƚĞƌ͘ŽĞƐƚŚĞŽƵƚĚŽŽƌŵĂŝŶboard display an error code severalŵŝŶƵƚĞƐůĂƚĞƌ͍NoYesRefer to the prescribed stepsƚŽƌĞƐŽůǀĞƚŚĞŝƐƐƵĞ͘Yes |
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