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7-15. Misoperation Alarm Indicators
A blinking lamp for other than the signal receiving unit
filter shows that a problem has occurred in the unit so
make an inspection. (Refer to servicing information in
the service manual, etc.) Also, if wired remote control-
ler and dedicated service check lines (854-9-9536-
044-97: service use) are available, then detailed error
information can be obtained by connecting to the
service connector as shown in the drawing. For
information on how to connect to the signal receiving
unit, refer to instruction manual that comes with the
dedicated service check lines.
Fig. 7-23
2013_M_I
ALL•
RCU : SUB
RCU : MAIN
NORMAL
PCB CHK.
TEST RUN
Service
connector
Lamp
OPERATION
TIMER STANDBY
Bright Cause of Trouble
lamp lamp lamp
●●● No power supply or mis-wiring of signal receiving unit.
O ●●
S.C.* errors between the indoor unit’s controller (PCB) and
signal receiving unit.
●●O S.C. errors between indoor and outdoor units.
● OOAlternately Indoor unit protector is activated.
O ● O Alternately Outdoor unit protector is activated.
● O ● Compressor protector is activated.
O ● O Concurrent Mis-setting of indoor unit.
O ⅜ O Concurrent Mis-setting of outdoor unit.
Table 7-2
* S.C. : Serial communications
2014_M_I
OPERATION lamp
TIMER lamp
STANDBY lamp
FILTER lamp
Fig. 7-24