Toshiba MMK-AP0073HP1-E1 Service Manual page 83

Check code
Main
Outdoor 7-segment display
remote
controller Check code Sub-code
E25 E25 —
E26 E26 No. of normally received
outdoor units
E28 E28 No. of detected outdoor
units
E31 E31 01: IPDU1 error
02: IPDU2 error
03: IPDU1, 2 errors
04: Fan IPDU error
05: IPDU1 + Fan IPDU error
06: IPDU2 + Fan IPDU error
07: All IPDU error or
communication error
between IPDU and
I/F P .C. board or
outdoor I/F P .C. board error
F01 — —
F02 — —
F03 — —
F04 F04 —
F05 F05 —
F06 F06 —
Detected
AI-NET Check code name
position
central control
remote controller
15 I/F Duplicated outdoor follower
address setup
15 I/F Decreased number of
connected outdoor units
d2 I/F Outdoor follower unit error
CF I/F IPDU communication error
Indoor TCJ sensor error
OF Indoor
unit
Indoor Indoor TC2 sensor error
Od
unit
93 Indoor Indoor TC1 sensor error
unit
19 I/F TD1 sensor error
A1 I/F TD2 sensor error
18 I/F TE1 sensor error
Status Error detection condition
All stop Outdoor addresses manually set up
are duplicated.
All stop The signal was not returned for
constant from the outdoor unit
which was receiving signal.
All stop Outdoor header unit received error
code from outdoor follower unit.
<Convenient functions>
When pushing SW04 for 1 second or more under condition that [E28] is displayed on
7-segment display of outdoor header unit, the fan of outdoor unit which stopped
abnormally starts rotating.
If pushing SW04 and SW05 simultaneously, the fan of normal outdoor unit operates.
When pushing SW05 singly, the operation of fan is cleared.
All stop Communication of each IPDU (P .C.
board) in inverter box interrupted.
• Resistance value of sensor is
Corresponding
unit only stops. infinite or zero. (Open/Short)
Corresponding • Resistance value of sensor is
unit only stops. infinite or zero (Open/Short).
Corresponding • Resistance value of sensor is
unit only stops. infinite or zero (Open/Short).
All stop • Resistance value of sensor is
infinite or zero (Open/Short).
All stop • Resistance value of sensor is
infinite or zero (Open/Short).
All stop • Resistance value of sensor is
infinite or zero (Open/Short).
Check item (position)
Note)
Do not set up the outdoor address manually.
• Outdoor is performing backup.
• Check the power of outdoor unit.
(Is the power turned on?)
• Check connection of inter-unit wire or disconnection
between outdoor units.
• Check the connector connection for communication on
outdoor P .C. board.
• Check outdoor P .C. board (I/F) error.
• Check the check code of outdoor follower unit.
• Check connection of communication connector and
disconnection between IPDU and I/F P .C. board.
• Check outdoor P .C. board (I/F, IPDU, Fan IPDU) error.
• Check external noise.
• Check power supply P .C. board for fan error.
• Check connection/wiring of TCJ sensor connector.
• Check characteristics of TCJ sensor resistance value.
• Check indoor P .C. board error.
• Check connection/wiring of TC2 sensor connector.
• Check characteristics of TC2 sensor resistance value.
• Check indoor P .C. board error.
• Check connection/wiring of TC1 sensor connector.
• Check characteristics of TC1 sensor resistance value.
• Check indoor P .C. board error.
• Check connection of TD1 sensor connector.
• Check characteristics of TD1 sensor resistance value.
• Check outdoor P .C. board (I/F) error.
• Check connection of TD2 sensor connector.
• Check characteristics of TD2 sensor resistance value.
• Check outdoor P .C. board (I/F) error.
• Check connection of TE1 sensor connector.
• Check characteristics of TE1 sensor resistance value.
• Check outdoor P .C. board (I/F) error.