Control of W-ECO MULTI SYSTEM
3
TD831077
III - 29
2. Optional Controller (remote controller)
7
Explanation of alarm messages
Serial
commu-
nication errors
Mis-setting
Remote controller is detecting
error signal from indoor unit.
Indoor unit is detecting error
signal from CCU (CR-DYPTG).
CCU (CR-DYPTG) is detecting
error signal from indoor unit.
Improper setting of indoor unit or
remote controller.
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”)
Indoor unit communication error
of group control wiring.
Improper setting.
Protective device in indoor unit
is activated.
Protective device in outdoor unit
is activated.
Improper setting
Alarm
message
<E1>
<E2>
<<E3>>
E4
E5
E6
E7
E8
<<E9>>
E12
E15
E16
E23
E24
E25
E26
E27
E29
E18
<L3>
L4
L5
L6
L7
L8
<<L9>>
P1
P9
P10
P2
P3
P4
P5
P17
P18
L17
Indoor unit is detecting error signal from remote controller (and system controller).
Error in receiving serial communication signal.
(Signal from main indoor unit in case of group control)
R.C. address on CCU (CR-DYPTG),
indoor unit address, indoor unit setting is not set.
(Auto address is not completed.)
Error in transmitting serial communication signal.
Error in receiving serial communication signal.
When turning on the power supply, the number of connected
indoor units does not correspond to number set. (Except R.C.
address is “0”)
Error in transmitting serial communication signal.
Error in receiving serial communication signal.
While turning on power supply, CCU (CR-DYPTG) does not
receive serial communication signal from some indoor units.
Error in transmitting serial communication signal.
Indoor unit address setting is duplicated.
Remote controller address (RCU. ADR) switch setting is
duplicated. (Duplication of main remote controller)
Starting auto. address setting is prohibited.
Auto address button S001 (A. ADR) is pressed while other R.C.
line is executing auto address operation.
Error in auto. address setting. (Number of connected indoor
units is less than the number set)
Error in auto. address setting. (Number of connected indoor
units is more than the number set)
Error of CCU (CR-DYPTG) in transmitting serial communication
signal to outdoor P.C.B..
Error of CCU (CR-DYPTG) in receiving serial communication
signal from outdoor P.C.B..
Duplication of outdoor unit address.
The number of connected outdoor unit does not correspond to
the number set.
Mis-wiring of outdoor unit control wiring
Error of outdoor P.C.B. in receiving serial communication signal.
Error of main indoor unit in receiving serial communication signal
from sub indoor units.
Duplication of main indoor unit address setting in group control.
Duplication of outdoor R.C. address setting.
Group control wiring is connected to individual control indoor unit.
Indoor unit address is not set.
Capacity code of indoor unit is not set.
Thermal protector in indoor unit fan motor is activated.
Improper wiring connections of ceiling panel.
Float switch is activated.
Thermal protector in outdoor unit fan motor is activated.
Compressor thermal protector is activated.
Defective phase.
Power supply voltage is unusual. (The voltage is more than 260
V or less than 160 V between L and N phase.)
Abnormal discharge temperature. (PC comp.)
High pressure switch is activated.
Incorrect power supply voltage.
Negative phase.
Abnormal discharge temperature. (AC comp.)
Abnormal discharge temperature. (SC comp.)
Mis-matching setting of refrigerant kinds between CCU and outdoor P.C.B..
There are 2 or more remote
controllers which has
operation mode prioty in 1
refrigerant circuit.
Priority setting remote
controller
Non-priority setting remote
controller
Activation of
protective
device
Possible cause of malfunction
NOTE
1. Alarm messages in << >> do not affect other indoor unit operations.
2. Alarm messages in < > sometimes affect other indoor unit operations depending on the fault.
●
CCU
:
Command control unit (incorporated in outdoor unit)
●
PC unit
:
Power control unit
●
AD unit
:
Additional unit
●
PC comp.
:
Power control compressor
●
AC comp.
:
Constant speed compressor
●
SC comp.
:
Scroll compressor