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ERROR DISPLAY
If there is an error occurring during the operation of the system, the error code appears on the LCD (see Fig. 19).
NOTE: In event of an error, turn off the unit and have unit serviced by trained service personnel.
Copyright 2017 CAC / BDP D 7310 W. Morris St. D Indianapolis, IN 46231
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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Function
Fig. 19 - Error Display
Table 4—Error Description
Error
Return air temperature sensor open/short
circuited
Evaporator temperature sensor open/short
circuited
Indoor unit liquid valve temperature sensor
open/short circuited
Indoor gas valve temperature sensor open/
short circuited
IPM temperature sensor open/short circuited
Outdoor ambient temperature sensor open/
short circuited
Outdoor unit condenser mid-tube temperature
sensor open/short circuited
Discharge temperature sensor open/short
circuited
Indoor and outdoor communication error
DC bus under-voltage protection
D
C
b
u
s
o
v
r e
v -
l o
a t
g
e
p
o r
e t
t c
o i
n
Compressor phase current sensing circuit
error
Compressor demagnetization protection
P
F
C
p
o r
e t
t c
o i
n
IPM Temperature Protection
O
v
r e
p -
o
w
r e
p
o r
e t
t c
o i
n
S y s t e m c h a r g e s h o r t a g e o r b l o c k a g e
protection
C
a
p
a
t i c
r o
c
h
a
g r
n i
g
e
r r
r o
H
g i
h
p
e r
s s
u
e r
p
o r
e t
t c
o i
n
L
o
w
p
e r
s s
u
e r
p
o r
e t
t c
o i
n
C
o
m
p
e r
s s
r o
t s
l a
n i l
g
O
v
r e
s -
p
e
e
d
n i
g
Drive board temperature sensor error
A
C
c
o
n
a t
t c
r o
p
o r
e t
t c
o i
n
Temperature drift protection
Sensor connection protection
D
C
b
u
s
v
l o
a t
g
e
d
o r
p
e
r r
r o
O
u
d t
o
r o
a f
n
1
e
r r
r o
p
o r
e t
t c
o i
n
Outdoor fan 2 error protection
Fan
Mode
Timer
On/Off
Error
Error
Code
F1
Drive board communication error
F2
Compressor overheating protection
b5
Indoor and outdoor units unmatched
Communication line misconnected or
b7
expansion valve error
P7
F
3
P
u
m
p
d -
o
w
n
F4
Defrost or oil return
F
5
F
o
c r
e
d
d
f e
o r
t s
n i
g
E6
Compressor startup failure
PL
High discharge temperature protection
P
H
O
v
r e
o l
a
d
p
o r
e t
t c
o i
n
U1
Whole unit over-current protection
HE
Over phase current protection
H
c
C
o
m
p
e r
s s
r o
d
e
y s
n
c
h
o r
n
z i
P8
IPM Current protection
C o m p r e s s o r p h a s e l o s s / r e v e r s a l
L
9
protection
Frequency restricted/reduced with whole
F0
unit current protection
Frequency restricted/reduced with IPM
P
U
current protection
Frequency restricted/reduced with high
E
1
discharge temperature
Frequency restricted/reduced with anti-
E
3
freezing protection
Frequency restricted/reduced with
L
E
overload protection
Frequency restricted/reduced with IPM
L
F
temperature protection
PF
Indoor unit full water error
P
9
A
t n
f - i
e r
e
z
n i
g
p
o r
e t
t c
o i
n
PE
AC input voltage abnormal
Pd
Whole unit current sensing circuit error
U
3
- 4
w
a
y
v
a
v l
e
e r
v
e
s r
n i
g
e
r r
L
3
M
t o
r o
t s
l a
n i l
g
LA
PG motor zero-crossing protection
Edition Date: 08/17
10
Error
Code
P6
H3
LP
dn
E7
F
o
H
1
Lc
E4
E
8
E5
P5
n i
g
H
7
H5
Ld
F8
En
F9
FH
F6
EU
E9
E
2
PP
U5
r o
U
7
H
6
U8
Catalog No:KSACN0301AAA-02OM
Replaces: KSACN0301AAA-01OM
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