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11.Service Diagnosis
11.1 Caution for Diagnosis
The operation lamp flashes when any of the following errors is detected.
1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions,
disabling equipment operation.
2. When a signal transmission error occurs between the indoor and outdoor units. In either case, conduct the
diagnostic procedure described in the following pages.
11.2 Parameter of primary electronic appliance
N
O
N
a
m
e
1
Fan motor
11.3 Problem Symptoms and Measures
Symptom
None of the units
operates
Equipment
operates
but does not cool, or
does not heat (only
for heat pump)
Large operating noise
and vibrations
11.4 Error Codes and Description indoor display
Indoor
Malfunction
The code indication that is listed above is the main fault
Troubleshooting
P
a
a r
m
t e
r e
Rated voltage:310V
Rated current:0.13A
Rated frequency:
50/60HZ
Resistance:14.5
Check Item
Check the power supply.
Check the indoor PCB
Diagnosis
by
port
pressure
operating current.
Check the installation
condition.
Code indication
indoor
E
1
E
2
E
4
E14
Check to make sure that the rated voltage is
supplied.
Check to make sure that the indoor PCB is broken
service
and
Check for insufficient gas.
Check to make sure that the required spaces for
installation (specified in the Technical Guide, etc.)
are provided.
Description
R
o
o
m
e t
m
p
e
a r
u t
e r
H
e
t a
e -
c x
h
a
n
g
e
s
e
n
n I
d
o
r o
E
E
P
R
O
M
e
r r
Indoor fan motor malfunction
34
P
c i
u t
e r
Details of Measure
s
e
n
s
r o
a f
u l i
e r
s
r o
a f
u l i
e r
r o
Service Diagnosis
Reference
Page
35
35
36
37
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