by johnson controls
21
Troubleshooting
18
Drive board
ambient
temperature
sensor error (for
the commercial
unit)
Drive board
ambient
temperature
sensor error
PF
Flash 3
times
Flash 3
times
Flash 3
times
oE
oE
DC link
high voltage
protection
DC link
low voltage
protection
PL
Flash 3
times
Flash 3
times
Flash 3
times
oE
oE
DC link
low voltage
protection
DC link
high voltage
protection
PH
Flash 3
times
Flash 3
times
Flash 3
times
oE
oE
/
Abnormal AC
input voltage
PP
Flash 3
times
Flash 3
times
Flash 3
times
oE
oE
Capacitor
charging error
Capacitor
charging error
PU
Flash 3
times
Flash 3
times
Flash 3
times
oE
oE
Jumper terminal
error protection
Jumper terminal
error protection
C5
Flash 3
times
Flash 3
times
Flash 3
times
oE
oE
Defrosting or
oil returning
in heating
Defrosting or
oil returning
in heating
H1
/
/
Flash
once
H1
Defrosting
symbol
displayed
/
Forcible
defrosting
H1
Quick
flash
/
/
H1
H1
Compressor
thermal overload
protection.
Compressor
overload
protection.
H3
Flash 3
times
Flash 3
times
Flash 3
times
oE
oE
Modulecurrent
protection
(namely
IPM protection)
IPM Module
current
protection
H5
Flash 3
times
Flash 3
times
Flash 3
times
oE
oE
Compressor
desynchronizing
Compressor
desynchronizing
H7
Flash 3
times
Flash 3
times
Flash 3
times
oE
oE
PFC Protection
PFC Protection
HC
Flash 3
times
Flash 3
times
Flash 3
times
oE
oE
Too high power
protection
(available for
the residential
outdoor unit)
Too high power
protection
(available for
the residential
outdoor unit)
L9
Flash 20
times
/
/
oE
oE
Compressor
startup failure
Compressor
startup failure
Lc
Flash 3
times
Flash 3
times
Flash 3
times
oE
oE
Compressor
phase failure/
reverse
protection
Compressor
phase failure/
reverse
protection
Ld
Flash 3
times
Flash 3
times
Flash 3
times
oE
oE
Compressor
rotation
failure(for the
commercial unit)
Compressor
rotation
failure(for the
commercial unit)
LE
Flash 3
times
Flash 3
times
Flash 3
times
oE
oE
Over speed (for
the commercial
unit)
Over speed
LF
Flash 3
times
Flash 3
times
Flash 3
times
oE
oE
Summary of Contents for ERJC 36
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