–35–
Check method
On the wired remote controller, central control remote controller and the interface P.C. board of the outdoor unit (I/F), a check display LCD (Remote controller) or 7-segment display (on the outdoor interface P.C. board) to display the operation
is provided. Therefore the operation status can be known. Using this self-diagnosis function, a trouble or position with trouble of the air conditioner (including the Hot water module) can be found as shown in the following table.
Check code list
The following list shows each check code. Find the check contents from the list according to part to be checked.
• In case of check from indoor remote controller: See “Wired remote controller display” in the list.
• In case of check from outdoor unit: See “Outdoor unit 7-segment display” in the list.
Indoor unit: Including of Hot water module.
Check code
Check code name Judging device
Wired remote
controller display
Outdoor unit 7-segment display
Auxiliary code
E01 — —
Communication trouble between indoor unit and remote controller
(Detected at remote controller side)
Remote controller
E02 — — Remote controller transmission trouble Remote controller
E03 — —
Communication trouble between indoor unit and remote controller
(Detected at indoor unit side)
Indoor unit
E04 — —
Communication circuit trouble between indoor / outdoor unit
(Detected at indoor unit side)
Indoor unit
E06 E06 No. of indoor units which received normally Decrease of No. of indoor units I/F
—E07 —
Communication circuit trouble between indoor / outdoor unit
(Detected at outdoor unit side)
I/F
E08 E08 Duplicated indoor unit addresses Duplicated indoor unit addresses Indoor unit • I/F
E09 — — Duplicated master remote controllers Remote controller
E10 — — Communication trouble between indoor unit MCU Indoor unit
E12 E12
01: Indoor/Outdoor units communication
02: Outdoor/Outdoor units communication
Automatic address start trouble I/F
E15 E15 — No indoor unit during automatic addressing I/F
E16 E16
00: Capacity over
01 ~: No. of connected units
Capacity over / No. of connected indoor units I/F
E18 — — Communication trouble between header and follower units Indoor unit Indoor unit
E19 E19
00: Header is not detected
02: Two or more header units
Outdoor header units quantity trouble I/F
E20 E20
01: Outdoor unit of other line connected
02: Indoor unit of other line connected
Other line connected during automatic address I/F
E23 E23 —
Sending trouble in communication between outdoor units
Trouble in number of heat storage units (trouble with reception)
I/F
E25 E25 — Duplicated follower outdoor addresses I/F
E26 E26 No. of outdoor units which received signal normally Decrease of No. of connected outdoor units I/F
E28 E28 Detected outdoor unit number Follower outdoor unit trouble I/F
E31 E31
*1 Inverter quantity information Inverter communication trouble I/F
80 Communication trouble MCU and sub MCU I/F
F01 — — Indoor unit TCJ sensor trouble Indoor unit
F02 — — Indoor unit TC2 sensor trouble Indoor unit
F03 — — Indoor unit TC1 sensor trouble Indoor unit
F04 F04 — TD1 sensor trouble I/F
F05 F05 — TD2 sensor trouble I/F
F06 F06
01: TE1 sensor
02: TE2 sensor
03: TE3 sensor
TE1,TE2 or TE3 sensor trouble I/F
69-EN 70-EN
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