Panasonic 26PEF1U6 26PEU1U6 Owner's Manual - Page 171

Judgment condition, Clear condition, Remote, controller, alarm display, Alarm, contents, Judgment

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4. Service procedures Remote controller alarm display Alarm contents F31 EEPROM trouble Judgment condition Reading/writing failure Clear condition Judgment and correction Recovery at power 1. Check EEPROM (IC007). reset 2. Check outdoor unit control PCB. L02 Mismatch of indoor Indoor unit judges that type Recovery at power 1. Check indoor unit EEPROM. and outdoor unit types does not match outdoor unit reset 2. Check indoor unit control (Espacio, Multi ) type. PCB. L04 Settings failure Duplicated outdoor unit address (system address) Automatic recovery 1. Check outdoor unit system address. 2. Check inter-unit control wiring. L07 Settings failure L10 Settings failure Group control wiring is connected to an independent-control indoor Outdoor unit capacity not set. Recovery at power reset Recovery at power reset 1. Check inter-unit control wiring. 2. Check indoor unit EEPROM. Check outdoor unit EEPROM. L13 Indoor-outdoor unit Outdoor unit judges that type Recovery at power 1. Check indoor unit types does not match indoor unit reset EEPROM. type. 2. Check outdoor unit control PCB. E06 Outdoor unit detected Serial signal receiving failure Automatic abnormal signal from (including failure to verify No. recovery indoor unit. of units) 1. Check inter-unit control wiring. 2. Check outdoor unit E07 Outdoor unit sending Serial signal sending failure Automatic 1. Check inter-unit control failure to indoor unit recovery wiring. 2. Check outdoor unit control PCB. E14 Settings failure Duplicated master unit in Recovery at power 1. Check inter-unit control simultaneous-operation multi reset wiring. control 2. Check indoor unit (Detected by outdoor unit) combination. E15 Automatic address Indoor unit capacity too low. Recovery at power 1. Check inter-unit control setting failure reset wiring. 2. Check outdoor unit control PCB. E16 Automatic address Indoor unit capacity too high. Recovery at power 1. Check inter-unit control setting failure reset wiring. 2. Check outdoor unit control PCB. E20 Automatic address Outdoor unit cannot receive Recovery at power 1. Check inter-unit control 4 setting failure any serial signals from indoor reset wiring. units. 2. Check outdoor unit control PCB. E31 Communications No communication possible Automatic recovery Check outdoor unit control trouble within unit with MDC for 3 minutes or PCB. longer. H01 Overcurrent Inverter stops after alarm is detected. 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. 4-7

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