Toshiba MCY-MHP0806HT8-C Series Service Manual page 99

Check code
Outdoor 7-segment display
Sub-code
F 2 4 –
F 3 1 –
H05 –
H06 –
H07 –
H08
H16
L 0 4 –
Number of priority indoor units
L06 (check code L05 or L06 depending
on individual unit)
L 0 8 –
L 1 0 –
02:SW setting mistake when HWM
L23
is connected
Fan IPDU
A3-IPDU
1 (Upper) 2 (Middle)
O
01
O
02
03 O O
04 O
05 O O
O O
06
L 2 9
O O O
07
Circle (O): Faulty IPDU
(*) Concerning the "00" auxiliary code
1) The wrong model setting for the interface
P.C. board was used when the board was
replaced with the service P.C. board.
In such a case, the sub-codes "08" to "0F"
for L29, which are not included in the table
above, may be displayed.
2) The wrong model setting for the IPDU P.C.
board was used when the board was
replaced with the service P.C. board.
Display of receiving unit
TCC-LINK Indicator light block
central control
or main remote
Operation Timer Ready
controller Flash
display
F 2 4 A
F 3 1 I S
H05
H06
H07
H08
H16
L 0 4 I S
L 0 5 I S
L 0 6 I S
L ( 0 ) 8 I S
L 1 0 I S
I S
L23
L 2 9 I S
Typical trouble site
Output voltage of high pressure sensor (PD) is zero
High pressure sensor (PD)
L T or provides abnormal readings when compressors
trouble
have been turned off.
Outdoor EEPROM is troubled (alarm and
O u d t o r o E E P R O M check
M shutdown for outdoor unit and continued
code
operation
Outdoor discharge Wiring / installation trouble or detachment of
temperature sensor (TD) outdoor
wiring trouble been
Activation of low-pressure Low pressure (PS) sensor detects abnormally low
protection operating pressure.
Temperature sensor for oil level detection (TK)
Lower oil level protection
detects abnormally low oil level.
Trouble in temperature
Temperature sensor for oil level detection (TK)
sensor for oil level
has been open/short-circuited.
detection (TK)
No temperature change is detected by
Oil level detection circuit
temperature sensor for oil level detection (TK)
trouble
despite compressor having been started.
Identical refrigerant line address has been
Duplicated outdoor
M 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
M 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
M
indoor unit other than priority indoor unit.
priority indoor unit)
Indoor group address not Address setting has not been performed for one or
M
set more indoor units (also detected at indoor end).
Outdoor unit capacity has not been set (after P.C.
M O u d t o r o c a p a c y t i n t o s t e
board replacement).
Bit4 of SW09 is not turned on when HWM is
M SW setting mistake
connected.
There are insufficient number of IPDUs (P.C.
M Trouble in number of IPDUs
boards) in inverter box.
98
Description of check code
for follower unit).
discharge temperature sensor (TD) has
detected.