32 Specifications subject to change without notice. 38MGR-04SM
OUTDOOR UNIT DIGITAL DISPLAY
A digital display is featured on the outdoor PCB. The LED displays different codes in the following situations:
• Standby: “- -.”
• Compressor operation: the running frequency.
• Defrosting mode: “dF” or alternative displays between running
frequency and “dF” (ach appears for 0.5s.)
• Compressor pre-heating: “PH” or alternative displays between
running frequency and “PH” (each appears for 0.5s.)
• Oil return process: “RO” or alternative displays between running
frequency and “RO” (each appears for 0.5s.)
• Low ambient cooling mode: “LC” or alternative displays between
running frequency and “LC” (each appears for 0.5s.)
• Forced cooling mode: the LED displays “FC” or alternative
displays between running frequency and “FC” (each appears for
0.5s).
• PFC module protection occurs three times within 15 minutes: “E6”
or alternates between displays of running frequency and “E6”
(each appears for 0.5s.)
In protection or malfunction, the LED displays an error code or protection code.
OUTDOOR UNIT DISPLAY
Outdoor Unit Point Function
A check switch is included on the outdoor PCB.
Push SW1 to check the unit’s status while running. The digital display displays codes (see Table 32 on page 33) each time the SW1 is pushed.
Fig. 41 — Outdoor PCB
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