Panasonic Inverter Air Conditioner R410A Technical Data And Service Manual

3-19
3. Electrical data
3-2 Outdoor Units
U-42PE1U6
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3-20
3. Electrical data
3-2 Outdoor Units
U-42PS1U6
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3-21
3. Electrical data
3-2 Outdoor Units
U-42PS1U6
4.@1$J@64MFUUFSJOEC


4.@1$J@64MFUUFSJOEC








 

4.@1$J@64MFUUFSJOEC


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4-1. Meaning of Alarm Messages ......................................................................................... 4-2
4-2. Symptoms and Parts to Inspect ................................................................................... 4-5
4-3. Details of Alarm Messages ........................................................................................... 4-8
4-4. Table  of Thermistor  Characteristics ............................................................................ 4-14
4....

4-2
4. Service procedures
Remote controller is
detecting error signal from 
indoor unitE01
E02
E10
E11
E14 E03
E08
E09
E04
E05
E06
E07 E15 E12
E16
E20
E17
E18
E31
L01
L02
L03
L04
L07
L08
L09
L10
L11
L13 Indoor unit is detecting error signal from remote controller (and system controller)Error in receiving serial communication signal
(Signal from main indoor unit in case of group control)
Auto address is not completed Outdoor system address, indoor system address, or indoor unit
individual/main/sub setting...

4-3
4. Service procedures
P09
P01
P10
P03
P04
P05
P15
P19
P20
P22
P26
P29
P31
H01
F01
F02
F10
F04
F06
F07
F08
F12
F29Ceiling panel connection failure
Indoor protection
Fan protective thermostat
Float switch
Discharge temperature trouble
High pressure switch or compressor motor thermal protector is activated.
Open phase detected, AC power trouble
No gas
4-way valve locked
High cooling load
Outdoor fan trouble
Inverter compressor trouble (HIC PCB)
Inverter compressor trouble (MDC)
Simultaneous-operation...

4-4
4. Service procedures
(2) LED Indicator Messages on Outdoor Control PCB
Power ON sequence
1. No communication from indoor units in system
2.  Communication received from 1 or more indoor units in system
3. Regular communication OK (Capacity and unit quantity match)If it is not possible to 
advance to 3, repeats 1 → 2.
At 3, changes to normal 
control.
P03 Normal operation
Automatic address setting in progress
Automatic address setting alarm (E15)
Automatic address setting alarm (E20)
Automatic...

4-5
4. Service procedures
4-2. Symptoms and Parts to Inspect
Judgment condition
Clear condition
P03
P05 P04
P15
P19
P20
P22
P26 Remote
controller
alarm displayAlarm
contentsJudgment and 
correction
Abnormal discharge 
temperature
 Discharge temp. 
detected at or 
above the specified 
value.Stops when temp. exceeds 
232 F.Recovery at restart
Recovery at restart Recovery at restart
Recovery at restart
Recovery at restart
Recovery at restart
Recovery at restart
Recovery at restart1. Check refrigerant cycle...

4-6
4. Service procedures
Judgment condition
Clear condition
P29
F04
F06Alarm
contentsJudgment and correction
Recovery at restart
Recovery at restart
Recovery at restart
Recovery at restart
Recovery at restart Current detection 
circuit trouble
 AC current value is 
high even when 
compressor is 
stopped.Inverter stops after alarm is 
detected. Alarm is output 
when inverter stops (pre-trip) 
consecutively 4 times.1. Stops immediately when 
restarted.
  Layer short in the 
compressor
2. Check inverter...