Error Codes Table - Panasonic CS-E18QB4RW Service Manual

15.3 Error Codes Table

Diagnosis Abnormality /
display Protection control
H00 No memory of failure
Indoor/outdoor
H11 abnormal
communication
Indoor unit capacity
H12
unmatched
Indoor intake air
H14 temperature sensor
abnormality
Compressor
H15 temperature sensor
abnormality
Outdoor current
H16 transformer (CT)
abnormality
Indoor fan motor
H19
mechanism lock
Indoor float switch
H21
operation abnormal
Indoor heat
exchanger
H23
temperature sensor
abnormality
Indoor heat
exchanger
H24
temperature sensor
2 abnormality
Outdoor air
H27 temperature sensor
abnormality
Outdoor heat
exchanger
H28
temperature sensor
1 abnormality
Outdoor discharge
H30 pipe temperature
sensor abnormality
Indoor / outdoor
H33 misconnection
abnormality
Indoor drain water
H35 adverse current
abnormal
Indoor/Outdoor
H38 mismatch (brand
code)
Outdoor fan motor
H97
mechanism lock
Indoor high pressure
H98
protection
Indoor operating unit
H99
freeze protection
4-way valve
F11 switching
abnormality
Power factor
correction
F90
(PFC) circuit
protection
Refrigeration cycle
F91
abnormality
Compressor
F93
abnormal revolution
Abnormality Protection
Judgment Operation
— Normal operation
Indoor fan only
operation can
After operation for
start by entering
1 minute
into force cooling
operation
90s after power
supply
Continuous for 5s
Continuous for 5s
—
Continuous
happen for 7 times
—
Continuous for 5s
Continuous for 5s
Continuous for 5s
Continuous for 5s
Continuous for 5s
—
—
—
2 times happen
within 30 minutes
—
—
4 times happen
within 30 minutes
4 times happen
within 10 minutes
2 times happen
within 20 minutes
4 times happen
within 20 minutes
Problem
—
Indoor/outdoor
communication not
establish
Total indoor capability
more than maximum limit
— or less than minimum limit,
or number of indoor unit
less than two
Indoor intake air
— temperature sensor open
or short circuit
Compressor temperature
—
sensor open or short circuit
Current transformer faulty
—
or compressor faulty
Indoor fan motor lock or
—
feedback abnormal
— —
Indoor heat exchanger
— temperature sensor open
or short circuit
Indoor heat exchanger
— temperature sensor 2 open
or short circuit
Outdoor air temperature
—
sensor open or short circuit
Outdoor heat exchanger
— temperature sensor 1 open
or short circuit
Outdoor discharge pipe
— temperature sensor open
or short circuit
Indoor and outdoor rated
—
voltage different
— —
— Brand code not match
Outdoor fan motor lock or
—
feedback abnormal
Indoor high pressure
—
protection (Heating)
Indoor freeze protection
—
(Cooling)
4-way valve switching
—
abnormal
Power factor correction
—
circuit abnormal
Refrigeration cycle
—
abnormal
Compressor abnormal
—
revolution
58
Check location
—
 Indoor/outdoor wire terminal
 Indoor/outdoor PCB
 Indoor/outdoor connection wire
 Indoor/outdoor connection wire
 Indoor/outdoor PCB
 Specification and combination
table in catalogue
 Indoor intake air temperature
sensor lead wire and connector
 Compressor temperature
sensor lead wire and connector
 Outdoor PCB faulty or
compressor faulty
 Fan motor lead wire and
connector
 Fan motor lock or block
—
 Indoor heat exchanger
temperature sensor lead wire
and connector
 Indoor heat exchanger
temperature sensor 2 lead wire
and connector
 Outdoor air temperature sensor
lead wire and connector
 Outdoor heat exchanger
temperature sensor 1 lead wire
and connector
 Outdoor discharge pipe
temperature sensor lead wire
and connector
 Indoor and outdoor units check
—
 Check indoor unit and outdoor
unit
 Outdoor fan motor lead wire
and connector
 Fan motor lock or block
 Check indoor heat exchanger
 Air filter dirty
 Air circulation short circuit
 Check indoor heat exchanger
 Air filter dirty
 Air circulation short circuit
 4-way valve
 Lead wire and connector
 Outdoor PCB faulty
 Insufficient refrigerant or valve
close
 Power transistor module faulty
or compressor lock