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by johnson controls
19
Troubleshooting
16
Refrigerant
insufficiency
or blockage
protection
(available for
the residential
outdoor unit)
Refrigerant
insufficiency
or blockage
protection
(available for
the residential
outdoor unit)
F0
/
Flash 10
times
/
oE
oE
Short/open
circuit of the
indoor ambient
temperature
sensor
Short/open
circuit of the
indoor ambient
temperature
sensor
Shown
as Table
16
/
Flash
once
/
F1
F1
Short/open
circuit of
the indoor
evaporator
Short/open
circuit of
the indoor
evaporator
Shown
as Table
16
/
Flash
twice
/
F2
F2
Short/open
circuit of the
of the outdoor
ambient
temperature
sensor
Short/open
circuit of the
of the outdoor
ambient
temperature
sensor
F3
/
Flash 3
times
/
F3
F3
Short/open
circuit of the
temperature
sensor at the
midway of
the condenser
coil ( for the
commercial unit)
Short/open
circuit of the
temperature
sensor at the
midway of
the condenser
coil ( for the
commercial unit)
F4
/
Flash 4
times
/
F4
F4
Short/open
circuit of
the outdoor
discharge
temperature
sensor
Short/open
circuit of
the outdoor
discharge
temperature
sensor
F5
/
Flash 5
times
/
F5
F5
Oil returning
in cooling
Oil returning
in cooling
F7
/
/
/
/
/
System high
pressure
protection
System high
pressure
protection
E1
Flash
once
/
/
E1
E1
Anti-freezing
protection
Anti-freezing
protection
E2
Flash
twice
/
/
E2
E2
System low
pressure
protection
(reserved)
System low
pressure
protection
E3
Flash 3
times
/
/
E3
E3
Compressor
discharge high
temperature
protection
Compressor
discharge high
temperature
protection
E4
Flash 4
times
/
/
E4
E4
Whole unit
over-current
protection
Whole unit
over-current
protection
E5
Flash 3
times
Flash 3
times
Flash 3
times
oE
oE
Communication
error between
the indoor and
outdoor units
Communication
error between
the indoor and
outdoor units
Shown
as Table
16
Flash 6
times
/
/
E6
E6
Summary of Contents for ERJC 36
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