Sanyo C4272R S/C - Manual (Page 77)

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 the instruction manual that came with the
dedicated service check lines. Fig. 7-23
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.
S.C.* errors between the indoor unit’s controller (PCB) and
signal receiving unit.
S.C. errors between indoor and outdoor units.
Alternately Indoor unit protector is activated.
Alternately Outdoor unit protector is activated.
Compressor protector is activated.
Concurrent Mis-setting of indoor unit.
Concurrent Mis-setting of outdoor unit.
Table 7-2
* S.C.: Serial communications
OPERATION lamp
TIMER lamp
STANDBY lamp
FILTER lamp
Fig. 7-24
77
RC
(WL)
07-115 SSHP_II 5/7/07 4:00 PM Page 77