Pioneer YN018GMFI16M2D, Service Manual

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43 Average value of T2 (Sum T2 value of all indoor units)/( number of indoor units in good connection)
44 Outdoor unit fan motor state Off:0, High speed:1, Med speed:2, Low speed:3 Breeze:4, Super breeze:5
45 The last error or protection code 00 means no malfunction and protection
9.3.2 Outdoor unit’s digital display digits:
There is a digital display on outdoor PCB.
Digital display digits function

In standby , the LED displays “- -”

In compressor operation, the LED display the running frequency,

In defrosting mode, The LED displays “dF” or alternative displays between running frequency and
“dF” (each displays 0.5s)

In compressor pre-heating, The LED displays “PH” or alternative displays between running frequency
and “PH” (each displays 0.5s)

During the oil return process, The LED displays “RO” or alternative displays between running
frequency and “RO” (each displays 0.5s)

In low ambient cooling mode, the LED displays “LC” or alternative displays between running
frequency and “LC”(each displays 0.5s)

In forced cooling mode, the LED displays “FC” or alternative displays between running frequency and
“FC” (each displays 0.5s)

When PFC module protection occurs three times within 15 minutes, the LED displays “E6” or
alternative displays between running frequency and “E6” (each displays 0.5s)

In protection or malfunction, the LED displays error code or protection code.