Carrier MMY-MAP0724FT9UL Service Manual page 131

(Error detected by main remote controller)
Check code
Outdoor 7-segment display
Sub-code
— —
— —
— —
(Error detected by central control device)
Check code
Outdoor 7-segment display
Sub-code
— —
— —
— —
— —
— —
NOTE
The same error, e.g. a communication error, may result in the display of different check codes depending on
the device that detects it.
Moreover, check codes detected by the main remote controller/central control device do not necessarily have
a direct impact on air conditioner operation.
Display of receiving unit
Indicator light block
Main
remote
Operation Timer Ready
controller
E01
E02
E09
Display of receiving unit
Indicator light block
TCC-LINK
central
Operation Timer Ready
control
C05
No indication (when main
C06
remote controller also in use)
—
C12 —
As per alarm unit
P30
(see above)
Typical fault site
Flash
No master remote controller,
faulty remote controller
communication (reception)
Faulty remote controller
communication (transmission)
Duplicated master remote
controller
Typical fault site
Flash
Faulty central control
communication (transmission)
Faulty central control
communication (reception)
Multiple network adapters
Blanket alarm for general-purpose
device control interface
Group control follower unit error
– 131 –
Description of error
Signals cannot be received from indoor unit;
master remote controller has not been set
(including two remote controller control).
Signals cannot be transmitted to indoor unit.
Both remote controllers have been set as master
remote controller in two remote controller control
(alarm and shutdown for header unit and continued
operation for follower unit)
Description of error
Central control device is unable to transmit
signal due to duplication of central control
device.
Central control device is unable to receive signal.
Multiple network adapters are connected to
remote controller communication line.
Device connected to general-purpose device control
interface for TCC-LINK is faulty.
Group follower unit is faulty (unit No. and above detail
∗∗∗
[ ] displayed on main remote controller)