Toyotomi MUL12- FWCA, Service Manual

Page: 32 / 49

56
MAINTENANCE
1.3 Error description
If some error occurs when the unit is running, the error code will be displayed on the wired controller and the main
board of the outdoor unit.See the table before for more details about the meaning of each error.
Residential AC Errors Commerical AC Errors
Outdoor Unit
"88" Display
Indicating Lamp
Lamp Panel
"88" Display
(Floor Ceiling
Type)
Wired
Controller
Display
Running Cooling Heating
/ Defrosting mode 1 08 / / / / /
/ Defrosting mode 2 0A / / / / /
/ heating overload protection 0C
Flash 3
times
Flash 3
times
Flash 3
times
/ oE
/ Normal running ON / / / / /
Short/open circuit
of the liquid valve
temperature sensor
Short/open circuit
of he liquid valve
temperature sensor
Shown as
Table 16
/
Flash 19
times
/ b5 b5
Short/open circuit
of the gas valve
temperature sensor
Short/open circuit of the gas
valve temperature sensor
Shown as
Table 16
/
Flash 22
times
/ b7 b7
5HIULJHUDQWLQVXI¿FLHQF\
or blockage protection
(available for the
residential outdoor unit)
5HIULJHUDQWLQVXI¿FLHQF\
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
0RGHFRQÀLFW 0RGHFRQÀLFW
Shown as
Table 16
Flash 7
times
/ / E7 E7
Overload protection Overload protection E8
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Anti cold blow protection /
E9
/ / / / /
/
Indoor unit water
RYHUÀRZHUURU
/ Flash Flash E9 E9
Trial run/trial operation Trial run/trial operation dd
Quick
ÀDVK
Quick
ÀDVK
Quick
ÀDVK
dd dd
Refrigerant
recovery mode
Refrigerant recovery mode Fo
Quick
ÀDVK
Quick
ÀDVK
/ Fo Fo
Drive module
resetting
(
for the
commercial unit)
IPM Drive module resetting P0
Flash 3
times
Flash 3
times
Flash 3
times
oE oE
Min. cooling/heating
(capability test code)
Cooling IPLV test
P0
/
Quick
ÀDVK
/ P0
P0
Cooling IPLV test / /
Quick
ÀDVK
P0