Panasonic CZ-RTC2

3-51
Control of 2WAY SYSTEM
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3. Timer Remote Controller
Meaning of Alarm Messages
Table of Self-Diagnostics Functions and Description of Alarm Displays
Continued
Possible cause of malfunction
Alarm
message
Serial
communication
errors
Mis-setting
Remote controller is detecting
error signal from indoor unit.
Error in receiving serial communication signal.
(Signal from main indoor unit in case of group control)
Ex: Auto address is not completed.
<E01>
Error in transmitting serial communication signal.
<E02>
Indoor unit is detecting error signal from remote controller (and system controller).
Indoor unit is detecting error
signal from main outdoor unit.
Error in receiving serial communication signal.
When turning on the power supply, the number of connected indoor
units does not correspond to the number set.
(Except R.C. address is “0.”)
E04
Error of the main outdoor unit in receiving serial communication
signal from the indoor unit.
<E06>
Improper setting of indoor unit
or remote controller.
Indoor unit address setting is duplicated.
E08
Remote controller address connector (RCU. ADR) is duplicated.
(Duplication of main remote controller)
<<E09>>
During auto address setting,
number of connected units does
not correspond to number set.
When turning on the power
supply, number of connected
units does not correspond to
number set.
(Except R.C. address is “0.”)
Starting auto address setting is prohibited.
This alarm message shows that the auto address connector CN054 is
shorted while other RC line is executing auto address operation.
E12
Error in auto address setting. (Number of connected indoor units is
less than the number set.)
E15
Error in auto address setting.
(Number of connected indoor units is more than the number set.)
E16
No indoor unit is connected during auto address setting.
E20
Main outdoor unit is detecting error signal from sub outdoor unit.
E24
Error of outdoor unit address setting.
E25
The number of connected main and sub outdoor units do not
correspond to the number set at main outdoor unit PCB.
E26
Improper wiring between main outdoor unit and sub-unit.
E27
Error of sub outdoor unit in receiving serial communication signal
from main outdoor unit.
E29
E30Serial transmission failure of outdoor unit.
Communications trouble
between units
E31Communication failure with MDC
Indoor unit communication
error of group control wiring.
Error of main indoor unit in receiving serial communication signal
from sub indoor units.
E18
<<E03>>
TD831151-002WAY.indb51TD831151-002WAY.indb51 2011/01/1317:08:042011/01/1317:08:04