Panasonic R410A User Manual

5-6
5
Symptoms and Parts to Inspect
Remote
controller
alarm display
Alarm
contents
Judgement conditions
Eliminating
condition of alarm
Judgement and correction
P03 Abnormal discharge
temperature error
• Discharge temp.
detected at or
above the specified
value
Stops when temp. exceeds
106 .
Alarm output on 5 pre-trips
1. Check refrigerant cycle (gas
leak).
2.Trouble with electronic
expansion valve
3.Check discharge
temperature sensor (TD).
P05 CT disconnected
or AC power supply
error
The current value transmitted
from the microcomputer on the
outdoor unit control substrate is
low.
When no AC power input for
more than 30 seconds to 5
minutes : Single alarm
Check outdoor unit control
PCB.
1.
2. Lack of reactor wire
P15 Insufficient gas level
detected.
• Discharge temperature is 95
or higher.
• Electronic expansion valve is at
Step 480.
1.Check refrigerant cycle (gas
leak).
2.Trouble with electronic
expansion valve
3.Check outdoor unit valve
opening.
L18 4-way valve locked
trouble.
• Judged after
operating for
5 minutes
consecutively
The indoor unit heat exchanger
temperature drops even though
the compressor is switched
on during the heating mode.
The indoor unit heat exchanger
temperature rises even though
the compressor is switched on
during cooling mode:
To +20
Pre-trip 1 time
1. Check 4-way valve.
2. Check 4-way valve wiring.
3. Check outdoor unit control
PCB.
P04
P22
P29
H31
High-pressure
protection error
High pressure switched
ON
(Alarm is output when switch
opened.)
OFF
Recovery at restart
Recovery at restart
Recovery at restart
Recovery at restart
Recovery at restart
Recovery at restart
Overload operation of
refrigerant cycle
Outdoor unit fan
motor trouble
• Inverter protection
circuit was
activated, or lock
was detected at
outdoor unit fan
motor.
Inverter stops after alarm is
detected. Pre-trip 10 times
1.Position detection trouble.
2.Outdoor unit fan motor over-
current Protection circuit is
activated.
• Check outdoor unit control
PCB.
• Refer to outdoor unit fan
judgement methods.
Inverter protector
circuit was activated.
G-Tr short-circuit
within the HIC circuit.
(Short time / 0.8
seconds or less)
HIC temperature
protection
Inverter stops after alarm
is detected. Alarm is output
when inverter stops (pre-trip)
consecutively 10 times.
Pre-trip consecutively 10 times
Recovery at restart
Temperature dropped
1.Stops immediately even
when operations restarted.
• Layer short on the
compressor
2.Check HIC circuit.
• Wiring trouble
Heat sink and PCB (HIC)
• Contact trouble
When the above has continued
for 1 minute. Indoor air sucking
due to body thermostat max
(E1 or E2) - TA < 4
< E1
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Panasonic R410A Specifications

General

Brand	Panasonic
Model	R410A
Category	Air Conditioner
Language	English