Toshiba MMU-AP0072H2UL Service Manual page 81

Check code
Outdoor 7-segment display
Sub-code
F12 –
F15 –
F16 –
F22 –
F23 –
F24 –
F31 –
H05 –
H06 –
H07 –
01: TK1 sensor error
02: TK2 sensor error
H08 03: TK3 sensor error
04: TK4 sensor error
05: TK5 sensor error
H15 –
01: TK1 oil circuit error
02: TK2 oil circuit error
H16 03: TK3 oil circuit error
04: TK4 oil circuit error
05: TK5 oil circuit error
H25 –
L04 –
Number of priority indoor units
L06 (check code L05 or L06 depending
on individual unit)
L08 –
L10 –
L17 –
L18 –
L28 –
Display of receiving unit
TCC-LINK Indicator light block
central control
or main remote
Operation Timer Ready
Flash
controller
display
F12 ALT
F15 ALT
F16 ALT
F22 ALT
F23 ALT
F24 ALT
F31 SIM Outdoor EEPROM error
H05
H06
H07
H08
H15
H16
H25
L04 SIM
L05 SIM
L06 SIM
(L08) SIM
L10 SIM Outdoor capacity not set
L17 SIM
L18 SIM
L28 SIM
Typical fault site
Outdoor suction
Outdoor suction temperature sensor (TS1) has
temperature sensor (TS1)
been open/short-circuited.
error
Outdoor temperature
Wiring error in outdoor temperature sensors (TE1,
sensor (TE1, TL) wiring
TL) has been detected.
error
Outdoor pressure sensor Wiring error in outdoor pressure sensors (Pd, Ps)
(Pd, Ps) wiring error has been detected.
Outdoor discharge
Outdoor discharge temperature sensor (TD3) has
temperature sensor (TD3)
been open/short-circuited.
error
Low pressure sensor (Ps)
Output voltage of low pressure sensor (Ps) is zero.
error
Output voltage of high pressure sensor (Pd) is zero
High pressure sensor (Pd)
or provides abnormal readings when compressors
error
have been turned off.
Outdoor EEPROM is faulty (alarm and shutdown
for header unit and continued operation for follower
unit)
Outdoor discharge Wiring/installation error or detachment of outdoor
temperature sensor (TD1) discharge temperature sensor (TD1) has been
wiring error detected.
Activation of low-pressure Low pressure (Ps) sensor detects abnormally low
protection operating pressure.
Temperature sensor for oil level detection (TK1-5)
Low oil level protection
detects abnormally low oil level.
Error in temperature
Temperature sensor for oil level detection (TK1-5)
sensor for oil level
has been open/short-circuited.
detection (TK1-5)
Outdoor discharge Wiring/installation error or detachment of outdoor
temperature sensor (TD2) discharge temperature sensor (TD2) has been
wiring error detected.
No temperature change is detected by
Oil level detection circuit
temperature sensor for oil level detection (TK1-5)
error
despite compressor having been started.
Outdoor discharge Wiring/installation error or detachment of outdoor
temperature sensor (TD3) discharge temperature sensor (TD3) has been
wiring error detected.
Identical refrigerant line address has been
Duplicated outdoor
assigned to outdoor units belonging to different
refrigerant line address
refrigerant piping systems.
Duplicated priority indoor
More than one indoor unit has been set up as
unit (as displayed on
priority indoor unit.
priority indoor unit)
Duplicated priority indoor
unit (as displayed on More than one indoor unit has been set up as
indoor unit other than priority indoor unit.
priority indoor unit)
Indoor group address not Address setting has not been performed for one or
set more indoor units (also detected at indoor end).
Outdoor unit capacity has not been set (after P.C.
board replacement).
Outdoor model Old model outdoor unit (prior to 3 series) has been
incompatibility error connected.
Cooling/heating selection Cooling/heating cycle error resulting from piping
unit error error is detected.
Too many outdoor units More than four outdoor units have been
connected connected.
81
Description of error