Sanyo C4272R Service Manual page 153

Remote
Alarm
controller
contents
alarm display
F31 EEPROM trouble
L02 Mismatch of indoor
and outdoor unit types
(Espacio, Multi )
L04 Settings failure
L07 Settings failure
L10 Settings failure
L13 Indoor-outdoor unit
types
E06 Outdoor unit detected
abnormal signal from
indoor unit.
E07 Outdoor unit sending
failure to indoor unit
E14 Settings failure
E15 Automatic address
setting failure
E16 Automatic address
setting failure
E20 Automatic address
setting failure
E31 Communications
trouble within unit
H01 Overcurrent
Judgment condition
Reading/writing failure
Indoor unit judges that type
does not match outdoor unit
type.
Duplicated outdoor unit
address (system address)
Group control wiring is
connected to an
independent-control indoor
Outdoor unit capacity not set.
Outdoor unit judges that type
does not match indoor unit
type.
Serial signal receiving failure
(including failure to verify No.
of units)
S r e a i s l g i n a s l e n d n i g a f u l i e r
Duplicated master unit in
simultaneous-operation multi
control
(Detected by outdoor unit)
Indoor unit capacity too low.
n I d o r o u n t i c a p a c y t i o t o h g i . h
Outdoor unit cannot receive
any serial signals from indoor
units.
No communication possible
with MDC for 3 minutes or
longer.
Inverter stops after alarm is
detected.
IV-7
4. Service procedures
Judgment and correction
Clear condition
Recovery at power 1. Check EEPROM (IC007).
reset 2. Check outdoor unit control
PCB.
Recovery at power 1. Check indoor unit EEPROM.
reset 2. Check indoor unit control
PCB.
Automatic recovery 1. Check outdoor unit
system address.
2. Check inter-unit control
wiring.
Recovery at power 1. Check inter-unit control
reset wiring.
2. Check indoor unit
EEPROM.
Recovery at power Check outdoor unit EEPROM.
reset
Recovery at power 1. Check indoor unit
reset EEPROM.
2. Check outdoor unit control
PCB.
Automatic 1. Check inter-unit control
recovery wiring.
2. Check outdoor unit
Automatic . 1 C h e c
recovery wiring.
2. Check outdoor unit control
PCB.
Recovery at power 1. Check inter-unit control
reset wiring.
2. Check indoor unit
combination.
Recovery at power 1. Check inter-unit control
reset wiring.
2. Check outdoor unit control
PCB.
Recovery at power . 1 C h e c
wiring.
reset
2. Check outdoor unit control
PCB.
Recovery at power 1. Check inter-unit control
reset wiring.
2. Check outdoor unit control
PCB.
Automatic recovery Check outdoor unit control
PCB.
Recovery at restart 1. Refrigerant cycle trouble,
overload operation
2. Loose screws between HIC
control PCB and radiating
plate
3. Cooling failure of radiating
plate
4. Check outdoor unit PCB
wiring.
i k t n r e u - n t i c o n r t l o
i k t n r e u - n t i c o n r t l o
SM831148
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