Lennox MPA012S4S-1L Service Manual page 196

Cassette Unit Display
PRE-DEF indicator(cooling and heating type)
or fan only indicator(cooling only type)
Timer indicator
Operation lamp
Temporary button
OPERATION TIMER DEF./FAN ALARM
MANUAL
Ducted Unit Display
ION indication lamp (optional function): This lamp illuminates when Clean Air
feature is activated.
DEFROST indication lamp (For cooling & heating models only): Lights up
when the air conditioner starts defrosting automatically or when the warm air control
feature is activated in heating operation.
OPERATION indication lamp: This lamp illuminates when the air conditioner is in
operation.
TIMER indication lamp: Lights up during Timer operation.
Temperature indicator: Displays the temperature settings when the air conditioner
is operational. Displays the malfunction code.
Wall-Mounted Unit
Alarm indicator
Infrared signal receiver
Display digital tube
Lennox Mini-Split Service Manual / Page 196